73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Spoonbill on September 25, 2017, 02:28:15 pm

Title: Engine almost dies when putting in gear
Post by: Spoonbill on September 25, 2017, 02:28:15 pm

Hey guys, me again. 87 r10 305 tbi 700r4. Truck is off, I start it up doesn't matter if I shift into drive or reverse, it will almost die. It stumbles until it catches itself. It doesn't matter if it is warmed up or not. Anyone have a clue as too what might be going on? Started doing this about 3 weeks ago and just getting worse

Title: Re: Engine almost dies when putting in gear
Post by: bd on September 25, 2017, 03:11:55 pm

Is the service engine soon (SES) light illuminating when the symptoms occur?  Last month you were going to have the ECM scanned for trouble codes.  Did you?  What codes were stored?

Title: Re: Engine almost dies when putting in gear
Post by: VileZambonie on September 25, 2017, 05:40:10 pm

and spray carb clean at the base of the TBI to see if it changes engine speed.

Title: Re: Engine almost dies when putting in gear
Post by: Spoonbill on September 25, 2017, 07:47:11 pm

Had it scanned and no fault codes. Just replaced the tbi base gasket. No warning light is on except when you first turn the ignition.

Title: Re: Engine almost dies when putting in gear
Post by: Captain Swampy on September 25, 2017, 09:21:20 pm

The body of the TBI could be worn at the throttle shaft and leaking air though. Possibly EGR valve also.

Title: Re: Engine almost dies when putting in gear
Post by: Spoonbill on September 26, 2017, 03:13:41 pm

Can't I just take the egr off??? Sprayed and no change in idle

Title: Re: Engine almost dies when putting in gear
Post by: VileZambonie on September 26, 2017, 05:15:26 pm

Pull the vacuum hose off of the EGR valve and plug it. See if the symptoms go away.

Title: Re: Engine almost dies when putting in gear
Post by: burnze on September 26, 2017, 06:42:19 pm

Have you checked fuel pressure?

Title: Re: Engine almost dies when putting in gear
Post by: Spoonbill on September 27, 2017, 08:15:47 am

Haven't checked fuel pressure. What is the easiest way to check it?

Title: Re: Engine almost dies when putting in gear
Post by: Spoonbill on September 28, 2017, 01:50:36 pm

Anyone have an idea on this? It is acting like manual when the clutch isn't releasing all the way. All I need is a direction to head but I have never heard of this. Thanks