Rough Idle? Stalling out? Loss of Power? I may have the answer. - Chevrolet Forum - Chevy Enthusiasts Forums

Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Past Chevy Truck, SUV & Vans > S-10 & Blazer > S10 & Blazer DIY and Useful Threads
Log In 

S10 & Blazer DIY and Useful Threads This section is strictly for frequently asked questions pertaining to S10s and Blazers.

LinkBack Thread Tools Search this Thread
Old 01-19-2009, 05:16 PM
Junior Member
Join Date: Nov 2007
Posts: 5
Default Rough Idle? Stalling out? Loss of Power? I may have the answer.

Hello all, I posted a question on this forum several months back asking why my 1997 S-10 w/ 2.2L4 had a rough idle and would stall out when stopped with the A/C compressor on. At the time, I received several possible answers from a clogged catalytic converter to a malfunctioning throttle position sensor. I finally took the truck to a local mechanic who ran a complete diagnostic on the truck and found that the number 4 cylinder spark plug was gas fouled. After much discussion, we determined that the culprit must be the number four injector that I had replaced several months back. I had replaced the stock injector with an off-brand, lifetime warranty injector from Auto Zone. My mechanic had noticed over the years that the only injectors that work properly in the 2.2L4 found in the S-10 and caviler is AC Delco. He didn't have an answer as to why this was, but as soon as I replaced the off-brand injector with an AC Delco, my problems cleared up immediately. So if your S-10 is running rough and you just changed injectors with off-brand equipment, that may be your problem.
Reply With Quote
Old 01-20-2009, 11:26 PM
EvansBlue's Avatar
Ride of the Month
April 2009
Join Date: Jul 2007
Location: Princeton, NC, USA
Posts: 6,151
Send a message via ICQ to EvansBlue Send a message via AIM to EvansBlue

Thanks for the info.
Brent Evans

Reply With Quote
Old 01-21-2009, 06:07 PM
shawnvw's Avatar
Super Moderator
Professional Mechanic
Join Date: Jan 2008
Posts: 2,571

Great example of "You get what you pay for"
Thanks for the info!

If you have a question, ask it in the forums. I will no longer be answering questions sent to my email.
Reply With Quote
Old 10-08-2009, 05:59 PM
CF Beginner
Join Date: Oct 2009
Posts: 8

My 98 s10 2.2 starts fine but back fires and idels like its runing on two plugs . It started about a month a go every time it raind now its realy bad cant even drive it just no power when i give it gas
Reply With Quote
Old 10-14-2011, 04:13 AM
CF Beginner
Join Date: Oct 2011
Location: Auburn,Wa.
Posts: 1
Angry 1992 GMC Jimmy,has loss of power,stalls,and speedometer problems

I have a 1992 GMC Jimmy.My speedometer usually runs normal,but every once in a while the speedometer will just start acting really crazy.Last week the speedometer started acting up and @ the same time there was a total loss of power,and the truck would stall.No clue what the problem is.The fuel filter was suspected so we changed that out,along with cap and rotor,no luck.Someone mentioned the O2 sensor,and someone else said the carburator.I need help bad!!
Reply With Quote
Old 11-04-2012, 08:54 AM
New User
Awaiting E-mail Confirmation
Join Date: Nov 2012
Posts: 1

do you think injector cleaners work i have tried some but really can't tell
Reply With Quote
Old 11-04-2012, 11:59 AM
in2pro's Avatar
Join Date: Apr 2008
Location: Austin, Texas
Posts: 7,117

They do, but work better as a preventative rather then a fix... meaning if you use them regularly you will get the most out of them... if you haven't and are now having injector issues it might be time to have them professionally cleaned...
Reply With Quote
Old 06-27-2013, 05:43 PM
CF Beginner
Join Date: Jun 2013
Location: new brunswick, canada
Posts: 3

sorry to ask a dumb question most likely in the wrong spot, but i just bought a 98 s10 with the 2.2l4 and the previous owner said he had fuel pressure issues with the truck, but at random intervals, mabey every day or mabey not at all for weeks, he was told it was the pump/sending unit and purchased one but never installed it on the truck, i plan on installing it myself, but i was wondering if there could be another problem, ie fuel pressure sensor? or mabey something else, also is there downloadable pdf's on repair manuals? thank you and sorry for the post in the wrong spot
Reply With Quote
Old 09-28-2013, 05:15 PM
New User
Awaiting E-mail Confirmation
Join Date: Sep 2013
Posts: 1

try changing the cap and wires
Reply With Quote
Old 10-07-2013, 09:02 PM
CF Junior Member
Join Date: Sep 2013
Posts: 34
Default Stalling out

HI,My son just bought a 94 gmc w/4.3 and we started having problems with stalling,back firing and such.
There's a TSB about the ignition module might check this out.
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough idle. What may the problem be? TSauer09 General Tech 0 07-26-2013 09:31 AM
'97 5.7L 3500 Engine shake, loss of power, rough idle pancho88 Express & G-Series Vans 1 08-07-2012 07:54 PM
Rough Idle / Loss of Power Gordon S-10 & Blazer 4 03-12-2011 12:53 PM
1995 Chevy s-10 4.3 vortec runs rough at idle loss of power under load rteas48183 S-10 & Blazer 2 03-18-2008 05:59 PM
Rough Idle, Stalling out due to A/C hatleyjm2000 S-10 & Blazer 2 11-03-2007 08:57 AM

1997, 2001, blazer, camaro, chevy, idle, loss, power, rough, s10, stall, stalling, stalls, sudden, wont

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 08:04 AM.