Question about 2000 Chevrolet S-10

1 Answer

I have a 2000 s10 pickup, auto transmission with a misfire.

I have a 2000 s10 pickup, auto transmission with 117000 miles on it. It misses very badly when starting cold and then smooths out some. It lacks power and gets about 20 mi/gal. I have replaced the plugs and plug wires, the ignition control module, the air filter, fuel filter, and the down stream O2 sensor.I have had it to two different technicians and got two very different diagnosis'. I have run several tankfuls of fuel through it with injector cleaner in it. It throws a P0300 code for a while and then a P0304. The check engine light is on and flashes as I drive it. The I/M monitor status doesn't seem to come in on the O2 sensor and the catalyst after several drive cycles. The coil packs, I am told are ok as well as the EGR valve. I have a new up stream O2 sensor to install when I have a chance. I need some advice.Thanks

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Chevrolet Master
  • 76,164 Answers

OK, P0304 is a hard misfire on number 4 cylinder, P0300 is a ramdon misfire on all cylinders.You need to check the following, check the fuel injector for #4 cylinder to see that it is working, u do this with a use a 1/2" wooden dowl (avail from any hardware store) and listen to that injector, does it click? next you need to check for intake manifold gaskets and vacuum hoses for vacuum leaks, get a can of carburetor spray from a parts store and spray it around the top of the intake manifold gaskets, if u have a leak the engine will change sound when u hit a leak, next if the 1st 2 tests show no problem you need to run a compression check on the engine, a tester is about $40, it pays for itself as a shop charges over $100 to do the test, run a compression check twice to verify result's, all the engine cylinders should be within 5% of the highest reading, so for a simple example if the highest cylinder is 150 PSI then all the other cylinder must be at least 142 PSI or the engine will misfire, let me know what u find, these are the common things after defective plugs or plug wires..

Posted on May 13, 2010

  • 2 more comments 
  • dwgraf May 13, 2010

    Hi,
    I have had the compression and the injectors checked by both of the garages and they checked out fine. I forgot to tell you it has a 2.2L engine in it. I will try the carb spray and see what that does. Both techs said they swapped the wires and coil packs to see if it would make a difference and checked the plugs. The swapping made no difference.
    Thanks,
    Don


  • yadayada
    yadayada May 13, 2010

    I have been a tech for 40 years and an someone is missing a big fault. call me at home if you like USA 925-459-0571

  • it71860 Dec 17, 2010

    I bought a 2000 s10, 2.2 about a month ago. It had no issues for the first month (it had a 30 day warranty?). After a rainy night, I had all the same symptoms, I found rotten vacuum lines and replaced them with no effect, the plugs are new titanium. Has 64,000 miles on it. Did you find the problem on your truck?

  • yadayada
    yadayada Dec 18, 2010

    This needs to go to a Chevy dealer.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

U have 1998 s10 2.2. After running good for a few miles the engine starts to bad misfire under a load. If I turn the ignition off and restart the car it runs fine for a few miles then misses again badly...


Do you have a check engine light? If so, go to any auto parts store and have then hook up their OBD2 scanner and have them read the code. Obtaining a code makes it easier for me to diagnose and repair.

Oct 04, 2014 | Cars & Trucks

1 Answer

I have a 98 S10 pickup 2.2L. Engine has a bad misfire and no check engine light.


Improper spark plug gap
Damaged spark plugs
Poor contact between wires and spark plug or cap or coil pack
Bad insulation on plug wires
Cracks or corrosion build up on cap and rotor
Weak or defective coil(s)
Weak or defective ignition module
Weak or dirty crank sensor
Timing
Fuel pressure (from pump)
Clogged fuel filter
Defective injectors
Vacuum leaks
Defective injector drivers (computer)
Poor compression

That is all I can think may causes engine to misfire.

_________________
Autel MaxiDAS DS708

Feb 04, 2013 | 1998 Chevrolet S-10 Pickup

1 Answer

Chrysler 300M p1391 code misfires when hot.


From research Chrysler is having a lot of this same problem. If it were another vehicle I would say it's either ignition module or pickup coils going bad. Some vehicles have had problems with wires to pickup coils (Hall effect coils) getting hot and shorting due bad wire insulation. One cause is oil or dirt getting on pickup coils, cam position sensor, also if cam is worn and moving any that will affect the gap between sensor and cam. You didn't say how many miles were on the car.

Apr 30, 2017 | 1999 Chrysler 300M

1 Answer

My 95 chevy s10 pickup truck stop moving after 1/2 mile, after 5 minutes, it moves again, what causes the transmission to do this?


Front transmission pump.For a Chevy S10 its located behind the torque convertor,This pump supplies the torque convertor and it service as a pressure supply system, Just because the pump is in the immediate area it does wear out and develops gaps and is unable to supply transmission fluid to the system. When the transmission warms up the fluid thins out.Sitting for 5 minutes allow the fluid to cool just enough to run again
P.sthis remind me of what happen to me I stuck on the side of the road ,half mile and took 2 hours to drive back

Apr 25, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

Transmission does not upshift. Shifts from park to reverse to neutral to drive but does not upshift from 1st gear. 117000 miles on the odometer HELP!!!


Sounds like one of the speed sensors are bad. It has an input speed sensor and an output shaft speed sensor. You need to have the TCM scanned for codes to see if one of them is bad.

Oct 30, 2010 | 1991 Dodge Dynasty

1 Answer

My 1998 s10 is misfiring really bad what's the possible cause?


Misfires could be one of a number of items. Questions you need to ask yourself are: When did I do a tune up last? (spark plugs, wires, distributor cap and rotor) If you have had these replaced recently then you need to check to ensure it is getting proper amounts of fuel, on these newer s10's they are equipped with a vortec injector system which is a module inside the intake that runs 6 to 8 plastic lines to each cylinder depending on motor size. The common problem for these injector systems is that the plastic lines tend to lay on top of each other inside the intake and as the motor is running they rub together. After years of this they finally rub holes into each other and and dump fuel into the intake causing a miss fire or rich condition. Those are common problems I have seen on those s10's. I hope that helps you figure it out.

Mar 29, 2010 | 1998 Chevrolet S-10 Pickup

3 Answers

Poor gas mileage 2000 S10 4.3L 4WD


Thats the mass air flow meter.Should get changed at 60.000 miles. Also change the air filter.

Jun 18, 2009 | 2002 Chevrolet Blazer

1 Answer

S10 pickup misifirng when light highway load


I had to rebuild my engine at 97000 miles cuz of low engine oil pressure and bad berrings

Dec 14, 2008 | 2000 Chevrolet S-10

1 Answer

Chevy s10 pickup


it could be possible a sensor or a solonoid in the braking system has gone bad. Also, I would simply check the fluid level, as the brakes wear out, the system requires more fluid to be added to it.

Aug 07, 2008 | 2000 GMC Jimmy

Not finding what you are looking for?
2000 Chevrolet S-10 Logo

Related Topics:

512 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides

Loading...