Question about 1998 Chevrolet S-10 Pickup

2 Answers

Sonoma 2.2ltr misfires under load. have replaced;

'97 sonoma 2.2ltr misfires under load.it will sit and idle fine.i have replaced; wires, fuel pump/filter,plugs, headgasket,coil packs,scanned it and all i come up with is misfire #3 cylinder and an egr code.wen i did the head gasket i got it machined and pressure checked,all was good.i have tried disconnecting the egr solenoid and no change.
i am at my wits end with this, the shop i was working at couldnt nail it down, but we dont have a scope either.ideas?

Posted by on

  • whosyourdadi Nov 13, 2009

    cool thanks!
    i did clean out the maf and TB with TB cleaner but havent checked the regulator. funny you say that because there was no obvious FI port i could check the fuel pressure from so that has never been done so far. my dad has the same-ish truck with a FI port at the back of the head, damn close to fire wall. but mine has none.am i looking in the wrong place?

×

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 35 Answers

Check compression. If not within spec, follow it with a cylinder leakdown test. You may have bad piston rings, especially if you've noticed it consuming oil.

Posted on Jan 08, 2014

Ad
  • 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.

  • Chevrolet Master
  • 3,854 Answers

Check the fuel pressure regulator, make sure it's working properly and also clean out the MAF sensor with MAFcleaner. it sounds like your having the engine go lean under load. Good luck

Posted on Nov 13, 2009

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 Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My 97 gmc Sonoma will crank great if it sits for two days or if it's cold out but I put a computer on it and it says Misfiring on multiple cylinders


Time for some diagnostics............
- Maintenance history?
- Spark plug check"
- Fuel supply integrity?
- Compression test?

Oct 10, 2015 | GMC Cars & Trucks

1 Answer

Why does my truck misfire under acceleration its a


try some some fuel injection cleaner and check and make sure plug wires are in order

Jul 01, 2010 | 1992 GMC Sonoma

1 Answer

1997 S-10 4.3 6 cyl, 5 speed, VIN X, 250,000 miles, Misfires under load, Fuel Pump and pressure good, Plugs, Cap, Wires and Coil replaced, Timing Chain replaced, Gets random multiple misfire code 0300 and...


Check the ohm's reading on the fuel injectors, they should each read around 14-16 ohm's cold for most 1997 GM engines, and if any fuel injectors are not within range replace them.

May 09, 2010 | 1997 Chevrolet S-10 Pickup

1 Answer

Like many others, I'm having trouble with my '97 Jeep Grand Cherokee with the 4.0 L engine and 4X4. Engine sporadically misfires, especially when coming to a stop. Sometimes dies on idle or startup....


Make sure the ignition coil drive is in proper sync. The sync should be at or close to 0. Also try an engine decarb this works great on 4.0 engines. Also if the misfire is coming for #3 there is a bulliten on installing a heat sheild around the #3 injector because it takeing a lot of heat from the exhaust mainfold that sits right under it.

Oct 20, 2009 | 1997 Jeep Grand Cherokee

1 Answer

I have a 97 pontiac gp i had it scanned to see why my service engine soon light was on it came back that cylinder 5 was misfiring i changed the coil pack,plugs,and wires but it still say cylinder 5 misfire...


Replace your #5 cylinder fuel injector. You rough idle sounds like low, or no fuel to the cylinder. Your hesitation on accelleration says the same.. A new fuel injector should resolve your issue.

I hope this helps you, and I wish you luck on your repair.

May 10, 2009 | 1997 Pontiac Grand Prix

Not finding what you are looking for?
1998 Chevrolet S-10 Pickup Logo

453 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

77186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...