Question about 1991 Chevrolet Corvette

21 Answers

1991 l98 tpi convertible

Engine shut down while driving would start and run for a second then shut off when trying to start right after it starts the first time, will not start at all.if you wait like 3to5minutes It will start and run for couple of second and shut off. I had to replaced the battery. The battery I had in there was not even two years old and it was a AC Delco even replaced ecm and it still does the same thing.
Hope to hear from you soon
Thank you
585 vette

Posted by on

  • 9 more comments 
  • 585vette Aug 14, 2008

    the stater is kicking over it and it starts and runs for a few seconds if you shoot ether into the throttle it starts and runs till the ether runs out.I also replaced the ignition module.it seems like the fuel injectors shut off after you wait 5 or so min. it will turn over and run for a few seconds and if you try to start it again it will not run those few seconds untill you wait again

  • 585vette Aug 14, 2008

    the fuel pump and filter was the first thing done the fuel is getting to the injectors fuel presure is 42lbs and thats right at the fuel rails, it is getting gas the first time it starts, then it shuts it off. then you have to wait 5 or so min,beforethe car will start and run till the same thing happens

  • 585vette Aug 14, 2008

    air filter not even on will fun if you shoot ether in carb

  • 585vette Aug 14, 2008

    the ignition module and computor was replaced the car cranks over and starts runs for a few seconds
    then shuts off will crank over but won't run, fuel
    is getting to the fuel rails but shuts off as soon as it startsand runs for a few seconds

  • 585vette Aug 14, 2008

    the alarm system was tested it is fine

  • 585vette Aug 14, 2008

    if that the case with the oil pump thenit would start and die every time andwould not have to waittotry to start it again

  • 585vette Aug 14, 2008

    will send this to my friend that is working on it

  • 585vette Aug 14, 2008

    we will try this and let you know

  • 585vette Aug 14, 2008

    Thank I will let you know

  • 585vette Aug 18, 2008

    buying a crankshaft position sensor can anybody send me a diagram where it is

  • 585vette Aug 19, 2008

    need diagram where crank shaft sensor is located

×

21 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Fuel Injectors or injector cancelling computor.

Posted on Jan 10, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,268 Answers

Replace the battery connectors/terminal and the spark plug

Posted on Aug 18, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 298 Answers

Check the (cps) cam position sensor , they wear out and throw it out of time. resulting in unexpected stalls.

Posted on Aug 18, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,800 Answers

If u cheked all the terminals and cables from abttery and u think that everything is okay

u shud try this

click here

rate me helpfull

Posted on Aug 18, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 594 Answers

You may also check the crank shaft sensor. it could be bad..

Posted on Aug 16, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,665 Answers

It seems fuel problem.
Check fuel pump, its electric wiring , fuel filter, fuel pump relay,and ensure that fuel tank is not containing any water mixed whith benzene.

Posted on Aug 14, 2008

  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Aug 20, 2008

    Diagram shows crank shaft sensor's location

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 319 Answers

I believe that your symptoms are indicative of a faulty Crankshaft Position Sensor.

I have seen the scenario played out before, and the culprit after trials and tribulations was the CPS.

Hope that you look into this!

Regards

Brian

Posted on Aug 14, 2008

  • Brian Berndt
    Brian Berndt Aug 14, 2008

    OK



    We are all waiting to see what you find.



    Brian

  • Brian Berndt
    Brian Berndt Aug 16, 2008

    Looks like another qualified expert has jumped on the Crankshaft Position Sensor bandwagon.



    Make that the first check.

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,028 Answers

Check to see if you have a fuel kill mechanism, that shuts the fuel pump off in case of collision. If you do, than check and see if it has a manual or electronic reset. If the car has this system, and it has the electronic reset, this could be your problem. If the fuel kill is malfunctioning, then when you turn the key off, shutting down power to the fuel pump, the electronic reset kicks in resetting the fuel kill until you start the car, then the malfunctioning fuel kill kicks off again. This could also be the case with the fuel pump relay, in which by turning off the key, it resets, etc....

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 521 Answers

After trying everything you got no solutions so i will send you the link which will help you understand where exactly the problem lies so as to get your problem solved soon.
http://www.automotix.net/autorepair/repairtips/

thanks .

Posted on Aug 14, 2008

  • 2 more comments 
  • tech expert12 Aug 14, 2008

    ok. let us know further.

  • tech expert12 Aug 14, 2008

    Some Common Mechanical/Engine Diagnosis and Checks

    If our vehicle is mechanically sick, we can easily sense it while driving. Some of the common symptoms include unusual noise from the engine, imbalanced chassis of the car, starting or stopping problems, rough gripping of the vehicle, peculiar functioning of various levers and many more. In an effort to produce a mechanical engineer in you, here we offer some of the most common issues with their correction measures:


    • Unusual Sound of the Engine - Due to excess driving the engine may start producing irregular noises or humming. This noise may occur due to structural disintegration of the engine. There might be some lugs or nuts which are loose and causing sound while the engine is running. This may also occur because of loose oil-filter into it. So just screw these tightly and you can avoid the service charge of the technician.
    • Crankshaft Adjustments - Crankshaft is an important component of the engine which rotates the fly wheel and is a major driving force behind the efficiency of the engine. This is attached to the piston rod and converts the force generated due to linear motion of the cylinder pistons into rotational motion of the fly wheel. Any wear and tear in its arrangement must be checked thoroughly. Debris or dust deposited over the crankshaft can hamper its working and thus reduce the performance level of the engine. It should be properly cleaned and adjusted for an effective output of the engine.
    • Camshaft Adjustments - Camshafts are responsible for the opening and closing of the valves, which allows or exhausts the air-fuel mixture of the engine. The camshaft serves as a diet regulator of the engine and hence plays a vital role in increasing the output of the engine. You just check for the connections of the camshaft with piston rod and engine. Lubricate the apparatus if it is getting roughened.
    • Miscellaneous - By a simple visual inspection you can check for a number of flaws relating to common problem of lubrication and torquing of the screws.



    If you are unfamiliar with the very basics of application of automobile-tools, then you should not operate with the complex components and expert advise is recommended.

  • tech expert12 Aug 15, 2008

    Did the solutions from all of us experts solved your problem if not then let us know the current updates so all the fixya experts can assist you further.

  • tech expert12 Aug 18, 2008

    Did the solutions from all of us experts solved your problem if not then let us know the current updates so all the fixya experts can assist you further.

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,011 Answers

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 623 Answers

Dont step on the gas pedal too much when starting

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,920 Answers

Have the computer checked as well as the v\crank shaft sensor

Posted on Aug 14, 2008

  • 2 more comments 
  • Ronnie Houston Aug 14, 2008

    the crank shaft sensor tells the car when to fire...if its not working properly it wont allow the car to run

  • Ronnie Houston Aug 14, 2008

    i still think its the crankshaft sensor it tells the vehicle to startand run,,,if its bad it wont do either for very long

  • Ronnie Houston Aug 14, 2008

    i had a buick regal that did the same thing your car is doing and it proved to be a bad crankshaft sensor.once i got it replaced the car ran fine again.i learned that through trial and error after i spent money on alot of other parts i didnt need.before long the car wont start at all because of this sensor.im only going by experience.

  • Ronnie Houston Aug 19, 2008

    the crank shaft sensor is located on the crank housing on the bottom i believe,,,on your car im not sure,if you find the crank you will also find the sensor.as i said i had a regal that did the same thing and it cost me more in new parts than it did to buy the sensor.ask at the auto parts store near you where the sensor is located they can tell you for sure

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 125 Answers

  1. Check to see if timing belt is not cracked or snapped. If you try and start up too many times you can crack the piston.
  2. Check to see if any air escaping anywhere
  3. Check the throttle body for built up dirt and clean it
  4. Check the distributor cap and the rotor is turning

Posted on Aug 14, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 133 Answers

U have go with a good car michecnic

Posted on Aug 14, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 157 Answers

SELL IT ON EBAY AS IS !!!

MWAHAHAHAH

JigSaw
XoXO !!!

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 19,396 Answers

If you have an alarm system it can also be a problem with car alarm.

Posted on Aug 14, 2008

  • Ginko
    Ginko Aug 18, 2008

    Also tell your friend to scan car computer module with a scan reader, this can tell you a lot of things on this problem.

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi,

You may want to check the engine management computer. It is responsible for triggering the injectors. One way to check is with the use of a voltmeter (preferably an analog one). One wire is +12 with the ignition key switched on, when cranking, the other wire should be a pulsating +12 to 0.

An alternative possibility is that your alarm/immobilizer is acting up. Do you have a factory installed or an aftermarket?

Pls post back as requested, how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 14, 2008

  • Louie  Role
    Louie Role Aug 14, 2008

    To be more clear, the injectors have two wires, one with an ignition B+12, the other pulsating when cranking.

  • Louie  Role
    Louie Role Aug 14, 2008

    Based on your postback on the others...


    • alarm checks out - does this include the resistor chip in the key?

    • computer checked out - there is pulsating +12 / 0 at one of the wires of the injectors?
    fuel pressure regulator?


×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,035 Answers

This is most likely an electrical problem.

If the engine cuts off, but the starter will crank and all the electrical accessories (lights, radio, etc.) work, than it could be something like a bad fuel pump relay, bad ignition module, or failing engine control computer.

If the car goes completely 'dead', then the most likely culprit is a bad ignition switch (the electrical portion).

Good luck.

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

    Sergeant:

    An expert that has over 500 points.

  • Master
  • 460 Answers

Please replace a new air filter and check your carburettor...

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,037 Answers

Its not the battery. Check your fuel pump and your fuel filter first

Posted on Aug 14, 2008

  • 1 more comment 
  • Benjamin Patri
    Benjamin Patri Aug 14, 2008

    Possibly you aren't getting power to the fuel pump when the key is in the RUN position. Please have a look into this

  • Benjamin Patri
    Benjamin Patri Aug 14, 2008

    Possibly you aren't getting power to the fuel pump when the key is in the RUN position. Please have a look into this

  • Benjamin Patri
    Benjamin Patri Aug 14, 2008

    sorry about the double post, here is one more thing that may prove useful

    On many chevy vehicles, the start up sequence is- turn ignition
    on, fuel pump runs and primes fuel rail. Pump switches off. Turn key to
    crank engine. Engine starts and oil pressure builds up. Contacts on oil
    pressure switch close and bypasses fuel pump startup relay. Fuel pump
    runs again as long as there is oil pressure.



    In your case I would suspect the oil pressure sensor has faulty contacts if the fuel pump has power in the RUN position. Let me know what you find


×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 6,487 Answers

Check all of the battery terminals and cables and check the wires on the starter/solenoid, start from the battery and follow the cable out and check all connections , clean and tighten them and if it still does it the starter/solenoid is bad and needs replacement...

Hope that helps..........

Posted on Aug 14, 2008

  • 1 more comment 
  • Mark Gil
    Mark Gil Aug 14, 2008

    You can also check the alternator just to check all the possibility of what is causing the problem ...

  • Mark Gil
    Mark Gil Aug 14, 2008

    Feel free to contact us back if you still need further help for this concern..



    Good luck.........

  • Mark Gil
    Mark Gil Aug 18, 2008

    This is where you can find it Under vehicle, passenger side, below engine area, above oil pan flange, mounted in center of block

    Hope that helps............


×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1991 dodge ramcharger 318 engine stalls driving down road. shut key off for a few seconds starts right back up and runs fine. any ideas?


It's losing one of two things - fuel or electricity. I would check and or replace the fuel pump and fuel filter first.

Nov 07, 2014 | 1991 Dodge Ramcharger

1 Answer

I have a 1991 lexus ls 400 and it was running fine then out of nowhere my car would jus shut off. then it would start right back up and run fine. its been doin this for a couple of weeks but not...


First thing is to check your transmission fluid when it is at normal operating temperature. The shutting off problem could be a lot of things.have your vehicle checked for codes,pep boys advanced auto and some others will do this for free.

Nov 23, 2013 | Cars & Trucks

1 Answer

I am having problems with my 85 vette L98 car will start for a few seconds than die. I have put in new pump , filter.pump relay.t.p.s. set at 05.4v new a,i,c..igm mod,, tach filter and yesterday it...


That is a possible cause alright. I would get a can of fast freeze spray from a motor parts factor. If its ok when cold but shuts off when hot its very likely.when the engine shuts off, spray the crank sensor and immediately start engine. If it starts and stays running its your crank sensor. Does it have a duel mass flywheel?? Some times if the crank sensor picks up off the flywheel and the duel mass is worn , it then runs out of sync with the cam shaft pick up sensor, which will cut the vehicle off. Just a shot in the dark? If you can drive vehicle when cold , check for vibrations whilst engine is cruising at steady speed. You will not feel vibrations under load. Keep us informed on how you get on.

Aug 20, 2012 | Cars & Trucks

2 Answers

I have a 1991 L98 Tuned Port Corvette. When I turn the key to the on position the fuel pressure reads 50psi but falls back to zero within 2-3 seconds and the car won't start. I can spray injector cleaner...


It could be a cam sensor. If the sensor isn't sending a signal to the computer then it will not allow the fuel pump to continue running after 2-3 seconds. Since you have spark and fuel pressure upon initial start this could be your problem.

Dec 17, 2010 | 1991 Chevrolet Corvette

1 Answer

How long should the fuel pump relay stay energized before going off on a 1991 chevy corvett. when i first cut my switch on it only energizes for about 2 secounds then drops out. the car is hard to crank...


it should only stay on for a few seconds,you have an underlying problem.it could be either your fuel pressure regulator or the check valve in the pump itself might be letting the fuel drain back into the tank,im guessing the car only does it after it has been sitting for a little while and after the initial hard start it will keep starting normally,the easiest way to test it is to put a fuel pressure tester on it and start the vehicle or just pressurize the lines by turning the key on and see if the pressure drops,if it does, pressurize the lines again and crimp of the line from the pump wherever it is rubber with a pair of vise grips and see if it drop then..if it doesnt it will need a pump if it does it will need a fuel pressure regulator,im guessing this car has a L98 5.7 ltr TPI engine in it

Oct 12, 2010 | 1991 Chevrolet Corvette

1 Answer

91 camaro not tpi it starts up fine but until it warms up you try


idle air control is used for assisting in fold starts. It sounds like its not functioning propperly. FYI your car is not carberated, its called a throttle body.

Jun 23, 2009 | 1991 Chevrolet Camaro

1 Answer

1991 5.7 TPI trans am wont start back up after warming up


This is my own take on your problem, i don't think thats enought pressure from fuel pump, thats pressure you get from throttle body injection. I believe fuel injection should be around 60 psi. Just a few pounds below that it won't run right.

Feb 09, 2009 | 1991 Pontiac Firebird

1 Answer

Clutch knock at shut down


THROW OUT BEARING IS MAKING THE KNOCK NOISE , I AM REPAIRING A 1991 L98 CONV. RIGHT NOW FOR THE SAME ISSUE!

Dec 09, 2008 | 1991 Chevrolet Corvette

Not finding what you are looking for?
1991 Chevrolet Corvette Logo

309 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...