92 s10 blazer idle problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevymotocross · 02-18-2009, 10:33 PM

I'm stumped with my fathers 92 s10 blazer with the TBI 4.3. The truck will not start cold without holding your foot on the pedal. Once started, it will idle, but very low, sometimes, it may even stall if put into gear too quickly. Once completely warmed up, it will idle, but still low. Engine runs strong otherwise.

I did voltage checks with the TPS, checks out fine. Did meter tests with the IAC, those tests came out fine as well.

Checked for vacuum leaks and found none.

What else should I be checking?

BarryB · 02-19-2009, 09:25 AM

Does that year have the cold start injector? I know some of the TPI had a cold start injector on them. I not sure but thats my .02 worth.

Damien · 02-19-2009, 02:52 PM

Check the coolant temp sender. It serves the same function as a choke. It is on the top of the intake manifold near the t stat housing and has two wire coming out of it.

speed · 02-19-2009, 03:13 PM

Did you check the fuel pressure before the regulator.

chevymotocross · 02-19-2009, 05:25 PM

Quote:

Originally Posted by speed

Did you check the fuel pressure before the regulator.

This was something I was thinking of checking next. I have to get those gauge adapters though so I can tap in a gauge.

02-18-2009, 10:33 PM	#1
chevymotocross Registered User Join Date: May 2007 Location: East Haven, CT Posts: 882	92 s10 blazer idle problems I'm stumped with my fathers 92 s10 blazer with the TBI 4.3. The truck will not start cold without holding your foot on the pedal. Once started, it will idle, but very low, sometimes, it may even stall if put into gear too quickly. Once completely warmed up, it will idle, but still low. Engine runs strong otherwise. I did voltage checks with the TPS, checks out fine. Did meter tests with the IAC, those tests came out fine as well. Checked for vacuum leaks and found none. What else should I be checking? __________________ 87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch

02-19-2009, 09:25 AM	#2
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: 92 s10 blazer idle problems Does that year have the cold start injector? I know some of the TPI had a cold start injector on them. I not sure but thats my .02 worth. __________________ We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff!

02-19-2009, 02:52 PM	#3
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: 92 s10 blazer idle problems Check the coolant temp sender. It serves the same function as a choke. It is on the top of the intake manifold near the t stat housing and has two wire coming out of it. __________________ I can still count my vehicles on two... wait three hands.

02-19-2009, 03:13 PM	#4
speed Junior Member Join Date: Jan 2006 Location: Northern Iowa Posts: 258	Re: 92 s10 blazer idle problems Did you check the fuel pressure before the regulator. __________________ Jeff J ---------- 86 El Camino 81 Monte Carlo 81 Regal 04 Colorado



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