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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: jasmith23 on July 23, 2011, 05:42:45 pm

Title: tbi wont idle
Post by: jasmith23 on July 23, 2011, 05:42:45 pm

 I have just done a tbi conversion to my 84 Scottsdale with an sm465. it will startup just fine but when it idles down it just dies out most of the time. when you drive down the road it acts just fine plenty of power and when i come to a stop it dies out again and is really hard to start back.  i have changed the computer, distributer, electronic spark control module, iac valve, and egr valve. it has 13 p.s.i. at the thottlebody. I'm at a loss . also when you turn the esc off in the computer it starts to idle fine. 

Title: Re: tbi wont idle
Post by: VileZambonie on July 24, 2011, 11:53:43 am

What is the timing set at? Any vacuum leaks? What's the TPS voltage at closed throttle?

Title: Re: tbi wont idle
Post by: jasmith23 on July 24, 2011, 07:44:37 pm

we ran a vac check and no leaks i will check the tps and the timiming tom i sent the truck to a buddies housebhe is a gm certifyed mechanic so i will ask him thanks vile