Question about 1994 GMC Sonoma

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My1994 GMC Sonoma just had a Distributor replace,but now it idles too high and the check Engine Light flash on and off what do I do to correct this problem ?

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  • GMC Master
  • 21,873 Answers

My suggestion would be to have someone check the computer for trouble codes to find out why the check engine light is coming on. The codes should help you or a mechanic find the areas to test or examine.

Posted on Dec 11, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

rulrich0718
  • 48 Answers

SOURCE: WHAT IS THE DISTRIBUTOR SETTINGS ON AN 97 GMC

By distributor settings i have to assume you mean ignition timing? Please send me a message with the engine size.rulrich071870@yahoo.com. How many liters? 4.3L V6 timing is set when the distributor is installed. #1 cylinder at TDC, (Top Dead Center) on the compression stroke. There is a easy trick to do this without removing valve covers to watch when both valves are closed on the number one cylinder, Remove the number one spark plug. Have a helper turn the key quickly from run to start and back to run(Make sure the distributor is unplugged and the coil wire is grounded to prevent engine starting!) while you hold your finger over the spark plug hole.(you could also use a compression gauge if you have one.)This is called tapping over the engine.You can feel the compression trying to blow your finger off the hole. Look for the timing mark on the harmonic balancer approaching the pointer on the timing chain cover. Once this is achieved, turn the key off, and rotate the engine by hand with a socket on the crankshaft pulley bolt until the tdc mark lines up with the timing mark on the timing cover. The engine is now set up at #1 tdc on the compression stroke. Look at your distributor, there are three marks on it. An indent on the bottom of driven gear, A mark in between the two shoulders just above the driven gear and when looking down at the top of the distributor a small pointer with the number 6 in it.(Disregard the one with the 8 in it as these distributors are used in the v8 as well.) Line up the indent with the mark between the shoulders with the rotor installed. The rotor segment should be pointing to the distributor cap hold down screw nearest the flat side of the housing. Using a long screwdriver align the oil pump drive shaft with the slot in the bottom of the driven gear. Holding the shaft in place with the housing and the two bottom marks lined up install the distributor into the engine. The shaft will turn as you engage the camshaft drive gear. With the rotor installed the rotor tip should now be pointing at the 6 mark at the top of the housing when fully seated. If the distributor will not fully seat then the oil pump shaft is not lined up. No worries though, have a helper crank the engine over a few turns, this should allow the distributor to drop in fully. Realign the mark on the balancer with the timing mark on the cover again, using the procedure mentioned above, and make sure the rotor tip points very close to the 6 mark. Rotate the housing until the 6 is dead center with the rotor metal conductor (segment). If it won't line up you installed the distributor a tooth or more off, Try the procedure again. Bolt down the distributor and you're in. If you get a check engine light afterwards and DTC(Diagnostic Trouble Code) P1345 is set off, the distributor in not installed corectly. The VCM( vechile control module) sets the running timing based on inputs from various engine sensors so there are no other adjustments to make. Good luck stmusgrove, Let me know how it works out!
(Please Click on the yes next to was this helpful, if it was helpful. Your feedback is important. I strive to become better at helping others everyday. Without feedback this is difficult to achieve.)

Posted on Dec 27, 2009

  • 91 Answers

SOURCE: 2004 GMC Envoy has trouble idling

Try the fuel filter. Sounds like the engine might be running rough due to weak fuel pressure. Its cheaper to replace, especially if it's still original from 04. Try running some injector cleaner through a couple of tanks of high octane gas.

Posted on Aug 06, 2008

  • 188 Answers

SOURCE: Truck losing power and service engine soon light on

Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.

Posted on Feb 02, 2009

  • 1 Answer

SOURCE: 1998 gmc sonoma push button 4x4 busting diaphram vacuum actuator

On top of the transfer case is a vacuum switch with 3 vacuum lines connected to it. This switch controls when vacuum is applied to the vacuum actuator. This switch can fail partly and allow fluid from the transfer case to be sucked up into the vacuum lines and anything connected to them as well. When you replaced the actuator before, did you notice any oily fluid inside of it?

Posted on Dec 23, 2008

  • 54 Answers

SOURCE: Check engine light is on and high idle (1500rpm)

Check for a vacuum leak.

Posted on Feb 03, 2009

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I have a 1998 GMC Sonoma 4.3 LV6 AT.


Cpuld be bad ignition wires, plugs. Dirty air filter. Plugged up fuel filter. Message me if intrested and I'll tell you how to check.the codes yourself using a paperclip.

Jan 01, 2014 | 1998 GMC Sonoma

1 Answer

91 buick lesabre chugging at idle and accelerating smooths out at speed


It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------

Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

------------

1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

---------

Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------------

Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

-----------


Cold start problem and vehicle shudder around 2500 to 3500 rpms

http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

----------

Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

-----------

GMC Sonoma Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

--------


GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

-------------

1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

------------

Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

-----------

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

---------

High Idle Problem

http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

-------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

--------

High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-------

Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

----------

Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

-----------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

These details will help.

Thanks.

Feb 04, 2013 | Buick LeSabre Cars & Trucks

1 Answer

Does not idel well some time engin light comes on missies for 2 secomds


It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------

Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

------------

1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

---------

Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------------

Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

-----------


Cold start problem and vehicle shudder around 2500 to 3500 rpms

http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

----------

Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

-----------

GMC Sonoma Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

--------


GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

-------------

1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

------------

Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

-----------

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

---------

High Idle Problem

http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

-------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

--------

High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-------

Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

----------

Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

-----------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

These details will help.

Thanks.

Jan 08, 2013 | 2005 Mazda B3000 Cab

1 Answer

1999dodge intrepid 2.7 lite idle low


Car Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
------------


It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------

Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

------------

1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

---------

Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------------

Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

-----------


Cold start problem and vehicle shudder around 2500 to 3500 rpms

http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

----------

Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

-----------

GMC Sonoma Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

--------


GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

-------------

1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

------------

Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

-----------

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

---------

High Idle Problem

http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

-------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

--------

High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-------

Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

----------

Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

-----------

While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

These details will help.

Thanks.

Dec 12, 2012 | 1999 Dodge Intrepid

1 Answer

Error code 33 on 1988 gmc s15 2.5 When the motor warms up the check engine light turns on and when I drive it it turns off after a couple of feet of driving. Any suggestions?


Code 33 means MAP sensor signal has low vacuum or circuit voltage is high here is the tricky part it can also point to a failed distributor reluctor so do this inspect the vacuum hose that attached to it at idle is there full vacuum then check the connection it safer just to replace it including the vacuum hoses if the code comes on check the timing make sure it correct also when you floor it does it stumble or cough if it does its the whole distributor will need to be replaced

Aug 18, 2011 | 1988 GMC S-15

1 Answer

My 93 sonoma acts like it is missing all the time what could be the problem


check your spark plugs and wires,pull out a wire at a time see if it effects the engine while its running,when you find one that changes engine idle replace that wire and plug, if it solves your problem go ahead and install the rest of the wires,and plugs.if its not there look further back distributor cap or coils will be what is causing it process of elimination.

Apr 17, 2010 | 1993 GMC Sonoma Club

1 Answer

Has low power, surges @ cruizing speed, rough idle (code 32)


You can remove the egr and see if it has been sealing,and if it still moves.

Jan 29, 2010 | 1993 GMC Sonoma Club

2 Answers

Misfires 96 gmc sierra 5.0


if the check engine light starts flashing its probably setting a code may have an injector problem

Aug 05, 2009 | 1996 GMC Sierra

1 Answer

1991 Sonoma Idles high and somtimes wont idle


Check the fuel filter-they had a recall on replacement filters(fram?-just google GMC Recalls) or go to 91 GMC Sonoma Repair=many sites to tell you and download manuel. Then the library has books if you dont. Good luck and God bless1
Scoyboy

Feb 04, 2009 | 1991 GMC Sonoma

1 Answer

1996 gmc sonoma 2.2 pick up standard transmission


check for a vaccum leak first there will be hoses on your intake look for hoses that should be attached if there are no vaccum leaks the replace the TPS(throttle position sensor) please rate this

Sep 29, 2008 | 1996 GMC Sonoma

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