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94 YJ 2.5 wont start.

It has spark it has fuel pressure but will not start. Replace crank sensor fuel pump. If I spray ether in the throttle body it will run for a little while it's like the injectors are not grounded what would be the problem the computer.

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6ya6ya
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Posted on Jan 02, 2017

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  • 321 Answers

SOURCE: buick lesabre nightmare

Need to get a scan tool and look at the data stream while it is running for alot more info.Also any trouble codes.Sounds like initially,the engine isn't getting any fuel.I would have a pressure gauge connected to the fuel rail on the engine,so i could monitor the fuel pressure while all this is going on.Items to look at on the data stream would be timing,what timing is the PCM commanding for the engine.Also,have you checked for continuos power feed to the coils during this no start condition,and fire at the plugs while cranking.You could possibly still have spark,but maybe it is extremely weak?I have seen bad ignition switches cause weird problems before too.Many things power up through the ignition switch,just a thought.Have also seen bad PCM's cause strange problems..38 volts is a little on the low side for GM.Usually see those at,at least .50 and up,and rise steadily while pressing the throttle,up to just under 5.0 volts.Potentiometer with 5 volt supply.Vacuum leak can be checked with engine running at a steady idle speed,spray brake cleaner all around the intake manifold and listen for engine speed change.

Posted on Jul 31, 2008

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SOURCE: buick lesabre no start

Hi you have replaced allmost everything ,(try fuel pump relay)

Posted on Aug 18, 2008

jagjeffery
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SOURCE: throttle body injectors not fiering but there is fuel pressure

the injectors are fired thru the engine cotrol module but it gets its signal to fire from the pick-up located inside the distributor if you are loosing injector pulse only the ignition module is bad if you are also loosing spark when you loose injector pulse your pick up is causing the problem if you replace the pick-up i recomend you change the ignition module when doing so because they work together and you have to remove the distributor to change the pick-up

Posted on May 31, 2009

  • 10 Answers

SOURCE: car cranks but wont start

replace your injectors. your vehicle is getting the fuel to start from the starter fluid. however the injectors arent giving it the gas that it needs to stay cranked

Posted on Feb 23, 2010

  • 1455 Answers

SOURCE: 1993 jeep grand cherokee limited starts for 2-3

Sounds like your injectors are not getting any signal from the ecu. Have you checked to see if you have a check engine light that illuminates when you first turn the ignition to on? If no check engine light is lit on your dash, your ecu needs to be repaired or replaced.

Posted on Jan 19, 2011

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94 chrysler town and country stalls after getting to a normal temp but wont start back up till its cooled down.


The crank position sensor could be bad.Check the injectors & fuel pressure regulator with this test.Hold the gas pedal to the floor while you crank the engine.Does it start??If yes,the fuel pressure regulator is bad or you've got a internally leaking fuel injector.Let the engine idle,pull the vacuum hose off the regulator and see if gas is inside the hose or gas is seeping from the regulator vacuum port.If yes,the regulator is bad.You can shut the engine off,wait 5 minutes then pull all of the spark plugs.If a plug is wet with fuel,that cylinders injector is leaking.A bad ignition module or ect sensor can also cause a no start.You can do the following test when the problem is occurring.Remove the air intake hose from the throttle body,spray carb cleaner or starting fluid into the TB opening, reinstall the hose,try starting the engine. If it starts and runs for a few seconds then dies,you've got a no fuel problem. If it doesn't start at all,you've got a no spark problem.

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I have a 99 geo metro.4 cyl no start condition.new fuel pump/filter.will start with ether and hold about 2000rpm if holding throttle..will not idle or start withought the ether...help please.


First off.... You have to make sure it IS getting fuel. Are you sure the fuel pump is getting 12volts... the fuel filter is installed in the right direction? Have you disconnected the supply line at the throttle bodt to verify fuel pressure and volume? If it starts with ether... there is definately a fuel supply issue from the tank

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My car cranks but will not start RVR GDI mitsubishi


Check all fuses first, then with an assistant, check for spark with a spark tester. if there is spark at 2 plugs, check for fuel pressure at the fuel rail with a gauge. Engines need three things to run, fuel, spark, and compression. If there is spark and fuel, do a compression test, if the timing belt jumped/broke, you won't have any

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Grand am 3 4


Sounds like a faulty fuel pressure regulator, or possibly the MAF sensor.

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Was running fine on interstate, started losing power on hills, cut off would not restart


When it fails to start-- do you have spark or injector pulse or
fuel pressure-- while cranking--?

Could be a crank sensor --but replacing parts with no testing,
is not the way to go --learn how to test components

Could be a crank sensor failed, fuel pump or timing issue,
chain or belt whatever it has

Look at Professional Scan Tool Data--codes or not, that is
always where you start & check the battery out is always a first
step as well

Mar 10, 2014 | 1996 Chevrolet Cavalier

1 Answer

Cranks but wont start


Likely a fuel delivery problem.

Check the filter, as it may be clogged and due for replacement. To test for fuel delivery, open your airbox and spray some starter fluid (purified ether, usually) down into the throttle body while someone else cranks the engine. If it fires up and runs for a few seconds but won't run without spraying the starter fluid, then you know you've got spark and compression. If that's the case, there could be any number of potential issues: throttle position sensor (not very common, but it does happen), fuel injectors clogged (common if you use low-grade fuel), fuel filter/strainer clogged (filters should be replaced every 30k miles or so, on average), fuel pump failure (you should hear a buzzing from the fuel pump when you crank the engine).

If the starter fluid doesn't help, then the problem is no spark. Check each plug/cable for fouling.

Feb 08, 2014 | Toyota RAV4 Cars & Trucks

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My 94 fors Taurus cuts out while driving and sometimes will not start. It cranks but won't start. We changed the fuel pump, spark plugs and distributor cap, but it is still cutting out while driving...


are there any codes? have you checked the pressure in the fuel line. you may have a bad fuel pressure regulator. or a bad crank position sensor. spray starter in the throttle body and see if it starts

Dec 14, 2012 | Cars & Trucks

1 Answer

If the battery went dead, does the computer need to be re-programmed so the car will start? Ive replaced, coil, fuel pump, fuel pressure, has spark to all plugs.


no it does not if the car wont start after all this did someone jump it and cross the jumper cables ? if so the computer is fried or its a crank sensor or cam sensor sounds like the injectors are not spraying fuel . spray starting fluid in the throttle body and see if it starts if it does its one of the three parts above re-post asking the cam and crank sensor ohms values hope this helps

Aug 15, 2010 | 1991 Mercury Capri

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Crank no start: has no spark and only has injector pulse on cyl # 1. if you spray starting fluid directly into throttle body car starts and stays running and has spark and inj. pulse. once you turn the car...


Fuel pump, you have to have press in the rail to fire all injectors- she will run on ether but not good for her. Ck your pump and any related fuses,relays,wiring.

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Buick lesabre no start


Hi you have replaced allmost everything ,(try fuel pump relay)

Jul 31, 2008 | 1992 Buick LeSabre

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