Winter coming, another cold start idle problem. - Page 5 - 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 01-20-2005, 01:28 PM   #41
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My engine will go thru a series of Revs, On a cold start it'll be about 1700-1800 for about 8-10 seconds, then it'll drop lower to about 1500, and doesn't go down till you tap it. Letting the car idle for any extended time (15 min + ) isn't good for the motor. Going to 5w-30 for 45f temps? Isn't it supposed to be colder then that in CT?

Some logic behind this is
a) Get oil pressure up
b) Keep from stalling due to sludgy oil
c) Get into operating temperature range quicker

I had 10w-30 in till monday, when i did my oil change, the 10w-30 was getting pretty black recently (good, that means it'* cleaning) I don't know if it was from our long time below 0 or what though. It does start much better on 5w-30 Synthetic then 10w-30 syn, or 5w-30 Dino.

Lifter clatter might mean you don't get oil to the top quick, when i switched to Mobil1, mine basically went away. I do get it still since the oil drains down more when shut off, but it also gets up top better too.
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Old 01-20-2005, 01:51 PM   #42
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Default idle

Tried tweaking my TPS voltage about a month ago and nothing.
Vital I'll try that hvac suggestion.
Do yours have climate contol like mine?
Still hard to beleive theres not a fix for this.
Maybe I should spend some time at the dealer looking up TSB'*.
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Old 01-20-2005, 01:53 PM   #43
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The lifter clatter is very, very minimal. That'* only thing on the engine to make any sounds after 98,000 so I'm not too concerned. Plus, it can only be heard on the very cold days when the engine was started after sitting over a cold night and stuck at 1500 RPMS.

As for oil, I stick with the manufacturer'* recommendation...10W30. Castrol.

Overall, I can't imagine that what our cars is doing is normal. I wish someone who says this is normal can actually witness it. It'* definitely odd and something that I've only seen in the L36s.
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Old 01-22-2005, 02:37 PM   #44
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Default blizzard

Its about minus 2 deg. in CT and a blizzard coming.
Started the car it races around 1600 then comes down to 1500 and Stays There until I tap the pedal.
Tried the HVAC thing and it does not work.
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Old 01-23-2005, 01:51 PM   #45
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Default Re: blizzard

Quote:
Originally Posted by SSEBONNE4EVA
Its about minus 2 deg. in CT and a blizzard coming.
Started the car it races around 1600 then comes down to 1500 and Stays There until I tap the pedal.
Tried the HVAC thing and it does not work.
Weird. The HVAC thing worked for me.
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Old 01-24-2005, 12:29 PM   #46
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Default HVAC

Vital, it sounds like yours has manual heater controls as I cannot put my climate control on before starting the car.
I guess you cannot have a remote starter with these babies as the car would continue to race until you got in and tapped the pedal.
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Old 01-24-2005, 12:46 PM   #47
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Default Re: HVAC

Quote:
Originally Posted by SSEBONNE4EVA
Vital, it sounds like yours has manual heater controls as I cannot put my climate control on before starting the car.
I guess you cannot have a remote starter with these babies as the car would continue to race until you got in and tapped the pedal.
Yes, I do have manual controls.....**** type.

I do have a remote starter on the car. To prevent the engine from free racing indefinitely I just put the HVAC controls on floor and defrost. That stops it from happening.
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Old 01-24-2005, 05:30 PM   #48
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Very strange that a manual HVAC on solves your problem?
could it be an intake vacume change?????
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Old 01-24-2005, 07:23 PM   #49
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Default Re: strange

Quote:
Originally Posted by SSEBONNE4EVA
Very strange that a manual HVAC on solves your problem?
could it be an intake vacume change?????
Either that or the a/c compressor is kicking the RPMs down.
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Old 01-26-2005, 10:25 AM   #50
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My issue reoccured today. Even with the floor/defrost position selected on a cold start the car sat pegged at 1500 RPMs for about 12 minutes.

I don't have the answer....
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