|
09-03-2018, 11:11 AM
|
#1 |
|
Registered User
Join Date: Jul 2011
Location: Vernon BC Canada
Posts: 287
|
89 suburban idle help
I have a 89 suburban it idles fine, then put it in reverse or drive and try and give it gas and it wants to stall out. what could this be? thanx for the help
|
|
|
|
09-04-2018, 07:23 AM
|
#2 |
|
State of Confusion!
  
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,609
|
Re: 89 suburban idle help
Possible vacuum leak is my first thought.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
|
|
|
|
09-09-2018, 04:41 PM
|
#3 |
|
Proprietor of Dale's Corner
Join Date: Nov 2012
Location: Vacaville , CA
Posts: 15,834
|
Re: 89 suburban idle help
I have the same problem on a 93 C1500. The fuel pressure is 12 lbs but dropped to 0 withen a second after fuel pump shut off. Ireplace the pressure regulator and the stumble is almost gone but still there a little. It'll be nice to see some ideas.
__________________
"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
|
|
|
|
09-10-2018, 04:34 PM
|
#4 |
|
Registered User
Join Date: Oct 2011
Location: Tucson, AZ
Posts: 639
|
Re: 89 suburban idle help
Could possibly be ignition related. If the ECM is not advancing the spark when fuel is applied you will receive a stumble, could also be temp sensor reading off causing the engine to think it is warmer or cooler than it really is.
Does the issue continue to happen once it is warmed up?
__________________
|
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
