Need Help . Car won't start. - FIXED - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-10-2008, 10:18 PM   #11
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I tried to hold WOT when cranking to "blow" cylinders as it was on old carburator engines.
But I didn't do it 10 times for 5 sec.
I will try tomorrow morning.
I'm reading FSM now .It says to disconnect camshaft sensor and try to start.
Then check injector pulsing.(smelled gas.I guess injectors let gas in cylinder).
Fuel pressure.(normal for VIN1 40 Psi).
Check for spark (will recheck on all wires tomorrow)
And then it says to check IAC system too.
That'* what on a trottle body that I could screw up.
But there is basically nothing to screw with IAC sensor.
I just cleaned it alittle and installed back.
Well ,tmorrow is another day.

Thanks for reply.
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Old 03-10-2008, 10:35 PM   #12
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You cleaned the IAC with WHAT?

The IAC isn't a sensor. It'* an actuator that allows a certain amount of air to bypass the closed throttle plate so the engine will have air to run off when the foot isn't on the pedal. At idle or when deccellerating.
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Old 03-10-2008, 10:40 PM   #13
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Cleaned spring, shaft and nose with little of carburator cleaner as per instruction in Techinfo http://www.bonnevilleclub.com/forum/...e=article&k=64

. Let it dry and installed back on cleaned TB.

Edit: Sorry,incorrectly called IAC a sensor. It'* just it installed with a bunch of sensors on TB
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Old 03-10-2008, 11:14 PM   #14
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One more question just arrise.
Is it possible that for some reason some carb cleaner left in TB after cleaning and it destroyed MAF?
Can MAF prevent car from starting?
As I said before it started after I put TB back and worked fine for approx a min or two and then I pressed a little on gas and it chocked,gives some white smoke (didn't catch from where) and stalled.
Oh and there was some white smoke in a vacuum line.Just a little.
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Old 03-10-2008, 11:20 PM   #15
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Tell us about the gasket on the TB. Did you replace it, reuse it, or go without?
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Old 03-10-2008, 11:26 PM   #16
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Gasket was replaced with brand new one.
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Old 03-10-2008, 11:32 PM   #17
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the tps is the most critical sensor the pcm uses to time the spark with the fuel. and on a ser 1, it needs to be adjusted. it should be close to .33 mV but not below that.

did you have a scanner with live data when you re-installed it?
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Old 03-10-2008, 11:38 PM   #18
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Quote:
Originally Posted by samueljackson
the tps is the most critical sensor the pcm uses to time the spark with the fuel. and on a ser 1, it needs to be adjusted. it should be close to .33 mV but not below that.

did you have a scanner with live data when you re-installed it?
Well,I think the last year TPS was adjustable is 1993 or 92.Don't remember exactly.
This on on my 1995 isn't adjustable. Holes for a screw are bigger on adjustable TSP to allow some movement when adjusting.
I do have Actron 9145 so tomorrow I will check TPS voltage with closed and open throttle . I'm suspecting I got bad TPS as replacement but it isn't suppose to prevent car from starting. It'* just my opinion of course. I might be totally wrong on it.

Thanks for replying.
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Old 03-10-2008, 11:42 PM   #19
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Quote:
Originally Posted by Vas62
Quote:
Originally Posted by samueljackson
the tps is the most critical sensor the pcm uses to time the spark with the fuel. and on a ser 1, it needs to be adjusted. it should be close to .33 mV but not below that.

did you have a scanner with live data when you re-installed it?
Well,I think the last year TPS was adjustable is 1993 or 92.Don't remember exactly.
This on on my 1995 isn't adjustable. Holes for a screw are bigger on adjustable TSP to allow some movement when adjusting.
I do have Actron 9145 so tomorrow I will check TPS voltage with closed and open throttle . I'm suspecting I got bad TPS as replacement but it isn't suppose to prevent car from starting. It'* just my opinion of course. I might be totally wrong on it.

Thanks for replying.
yes 93, sorry, i had mine in my head.
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Old 03-10-2008, 11:45 PM   #20
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I'm searching and can't find any answer to two questions:

1.Can I start engine with disconnected MAF?
2.Can I start engine with disconnected TPS ?

Or both disconnected?

Or it'* impossible to start if any is disconnected?

Edit: Ok. Found answer for firs one.
Willwren said :Forget the MAF sensor. As I said above IT WILL NOT PREVENT THE CAR FROM STARTING. http://www.bonnevilleclub.com/forum/...00&highlight=A

Found the answer for second LOL

Willwren said : Your TPS isn't a factor for a no-start. Ignore it. http://www.bonnevilleclub.com/forum/...ight=tps+start

Well ,mistery continues.
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