help with a chevy

jeepmanjeff · 06-27-2008, 05:53 PM

My guesses would be:

Throttle position sensor, check the voltages closed and full open (naturally with the engine not running)
Temperature sensor, this will control to a degree leaness for fuel.
Map Sensor: drop in pressure will greatly affect the motor. More load could be loss of pressure. Possibly cracked hose you can't see.
IAC Idle Air Control. this will affect how much air fuel mixture you get. You said it acted like it chokes out...THIS COULD VERY WELL BE IT. Could be stuck in a open or closed state.All else fails after these...go to junk yard and get duplicate ECM. Computer could have taken a surge and messed up eprom.

pete · 06-29-2008, 12:29 AM

FINALLY got it figured out. it was the spider. went to pull and pay and got one put it in and it runs great. thanks everybody for all the suggestions. thanks pete

itbrokeagain · 06-29-2008, 08:21 AM

?????

jeepmanjeff · 06-30-2008, 03:03 PM

what is a spider?????

jfiscus · 06-30-2008, 03:11 PM

a spider is a complicated fuel injector inside of these chevy motors. not tha thard to replace but can cause all sorts of problems when it goes bad.

06-27-2008, 05:53 PM	#1
jeepmanjeff Ah Unz ze President! - CORE Member - - Moderator - Join Date: Jan 2007 Location: Fairfield Ohio Posts: 588 Images: 343	My guesses would be: Throttle position sensor, check the voltages closed and full open (naturally with the engine not running) Temperature sensor, this will control to a degree leaness for fuel. Map Sensor: drop in pressure will greatly affect the motor. More load could be loss of pressure. Possibly cracked hose you can't see. IAC Idle Air Control. this will affect how much air fuel mixture you get. You said it acted like it chokes out...THIS COULD VERY WELL BE IT. Could be stuck in a open or closed state.All else fails after these...go to junk yard and get duplicate ECM. Computer could have taken a surge and messed up eprom. __________________ Keep them on all 4's

06-29-2008, 08:21 AM	#3
itbrokeagain Just Empty Every Pocket - CORE Member - Join Date: Feb 2007 Location: Amelia Posts: 1,435	????? __________________ 91 fj 80 on 37 Nitto Muds with a 10k winch. Cage and sliders coming soon.

06-30-2008, 03:03 PM	#4
jeepmanjeff Ah Unz ze President! - CORE Member - - Moderator - Join Date: Jan 2007 Location: Fairfield Ohio Posts: 588 Images: 343	what is a spider????? __________________ Keep them on all 4's

06-29-2008, 12:29 AM	#2
pete Join Date: Mar 2008 Location: sharonville Posts: 26	FINALLY got it figured out. it was the spider. went to pull and pay and got one put it in and it runs great. thanks everybody for all the suggestions. thanks pete

06-30-2008, 03:11 PM	#5
jfiscus Terrain Stomper Join Date: Feb 2007 Location: Crittenden, KY Posts: 633	a spider is a complicated fuel injector inside of these chevy motors. not tha thard to replace but can cause all sorts of problems when it goes bad.