Have a 94 gmc box truck 7.4L. Runs great in park but wants to die in drive. Changed plugs and wires, now i have a code for IAC would that cause it to die in gear?

Asked by tim4548 Oct 20, 2014 at 05:46 PM

Question type: Maintenance & Repair

11,925

- Report

Mike answered 2 years ago

Yes after that pull the big tube off the throttle body and clean the throttle plate in there it will be all black and carboned up. When done disconnect battery for 10 minutes this will clear code and reset idle to factory presets. Good luck

Mark helpful

- Report

tim4548 answered 2 years ago

i sprayed a whole can of carb clean in it. going to pull cables and see what happens. sounds like it is starving for fuel or air. possible distributor?

Mark helpful

- Report

tim4548 answered 2 years ago

oh and it wants to jump as soon as i put it in gear?

Mark helpful

- Report

tim4548 answered 2 years ago

i got the truck and there is only 1 vacuum on a 2 sided vacuum port. not sure if that has to due with it.

Mark helpful

- Report

tim4548 answered 2 years ago

unhooking the battery didnt help :(

Mark helpful

Your Answer

Have a 94 gmc box truck 7.4L. Runs great in park but wants to die in drive. Changed plugs and wires, now i have a code for IAC would that cause it to die in gear? 5 answers

GMC

-

Maintenance & Repair
I drive 1994 gmc sierra 5.7 SLT it idles fine in park and in gear at a stop light. Now when I take off from a light it seems to have little to what power and it takes forever to get up to speed. 1 answer

Now when I take off and get up on it it shifts from 1st to 2nd at 3500 rpm is my transmission going out?

1994 GMC Sierra C/K 1500

-

Maintenance & Repair
i have a 07 gmc envoy, whenever i start it up runs and idles fine, but when i put in in gear it rund rough, when i drive it a few miles it runs fine. 2 answers

i have a 07 gmc envoy, whenever i start it up runs and idles fine, but when i put in in gear it rund rough, when i drive it a few miles it runs fine.

2007 GMC Envoy SLE-1 4 Dr SUV

-

Maintenance & Repair
I have a 1999 GMC Serria 1500 series truck I took out my 305 engine and put in a 350 engine now it wants to stall 1 answer

I put all most everything new in the motor even a computer and when I did it runs worst. Please help

1999 GMC Sierra 1500 SL 4WD Standard Cab LB

-

Maintenance & Repair
why would my truck be rough idle and wants to die in gear 1 answer

It started after I changed the donut flange gasket off the manilfold

1997 GMC Sierra 1500 C1500 SLE Extended Cab SB

-

Maintenance & Repair

Looking for a Used GMC in your area?

CarGurus has 217,204 nationwide GMC listings starting at $400.

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.

#1		dragonflyoffshore Reputation 5,100
#2		John Saffrahn Reputation 4,400
#3		Richard Schroer Reputation 4,320

Have a 94 gmc box truck 7.4L. Runs great in park but wants to die in drive. Changed plugs and wires, now i have a code for IAC would that cause it to die in gear?

5 Answers

Your Answer

Related Questions

Have a 94 gmc box truck 7.4L. Runs great in park but wants to die in drive. Changed plugs and wires, now i have a code for IAC would that cause it to die in gear? 5 answers

I drive 1994 gmc sierra 5.7 SLT it idles fine in park and in gear at a stop light. Now when I take off from a light it seems to have little to what power and it takes forever to get up to speed. 1 answer

i have a 07 gmc envoy, whenever i start it up runs and idles fine, but when i put in in gear it rund rough, when i drive it a few miles it runs fine. 2 answers

I have a 1999 GMC Serria 1500 series truck I took out my 305 engine and put in a 350 engine now it wants to stall 1 answer

why would my truck be rough idle and wants to die in gear 1 answer

Looking for a Used GMC in your area?

Shortcuts

Search GMC Questions

GMC Experts