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73-87 Chevy _ GMC Trucks => Performance => Topic started by: cwertman87 on November 30, 2007, 10:33:40 am

Title: Rough idel
Post by: cwertman87 on November 30, 2007, 10:33:40 am

i have a 87 k1500 with a 350. if i start the truck up and drive a short distances and come to a stop it idels real rough and losses vacuum. so its had to stop especialy if your coming up to a stop sign. has anyone ever experinces this before ive tried the fuel system cleaner and everything im gunna try to do a tune up: plugs wires cap rotor pcv valve fuel filter etc. and if anyone had any ideas or hints let me know ive talked to my boss at the shop i work for and my teacher at the auto mechanics school i go to no one can seem to figure it out... other thoughts are the map sensor!

Title: Re: Rough idel
Post by: VileZambonie on November 30, 2007, 04:07:53 pm

Quick test: Pop the vacuum hose off of the EGR valve and see how it behaves. If your EGR solenoid is hanging open it will do exactly as you are describing.

Title: Re: Rough idel
Post by: cwertman87 on November 30, 2007, 10:56:49 pm

im working tommorow so i will give that a shot and hopefully that can send me in the right direction thanks for the tip!

Title: Re: Rough idel
Post by: cwertman87 on December 02, 2007, 01:10:40 pm

i disconnected the vacuum line and stuck a screw in there for now untill i get enough money and fin tie to replace the EGR valve i got school and sports and cash is low.

Title: Re: Rough idel
Post by: VileZambonie on December 03, 2007, 06:32:54 am

So what are you saying? That it did the trick? If it did it's not the EGR valve it's the solenoid.

Title: Re: Rough idel
Post by: cwertman87 on December 04, 2007, 09:42:36 am

i took the vacuum hose off and put a screw in it, and its not running like crap so i say that its the EGR.

Title: Re: Rough idel
Post by: Captkaos on December 04, 2007, 11:20:41 am

If you pulled the hose off and it fixed it that would be the solenoid not the valve.