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11-01-2011, 10:05 PM
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#1 | ||||
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New Member
 Join Date: Nov 2011
Posts: 2
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96 Saturn high idle in neutral
I have a 96 manual Saturn SL and recently when I put it in neutral the rpm's go up to 2000-2100, when the vehicle comes to a halt the rpm's drop down to 900ish. When I start the car the rpm's go up to 2000 also. I've cleaned out the throttle body but no change. Any suggestions? Vacuum leak? VSS? Thanks.
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11-03-2011, 09:05 AM
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Member
Join Date: Mar 2009
Location: Chicago Area
Posts: 115
2004 ION-2 Sedan
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Re: 96 Saturn high idle in neutral
You might get a better response if you post in the proper forum for your model. But, I had a similar problem with my '04 ion. It turned out to be a faulty TPS and didn't throwing a MIL code. I suggest checking the continuity of your TPS.
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11-04-2011, 10:53 AM
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Member
Join Date: Dec 2010
Posts: 52
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Re: 96 Saturn high idle in neutral
I had a similar problem in my 99 Saturn DOHC and I first changed out the TPS with no difference. I cleaned the throttle body and this actually made the problem worse. I would suggest you chance the Idle Air Control valve. It easily gets all gunked up (very technical term) especially when you clean the throttle body as all the crap out of the TB gets into it. It made a night and day difference on my car. Before I was unable to keep the thing running and it would "idle" at about 2500 rpm. Now it is at 850-900 all day long.
... 2004 ION 3 - LE - 114K miles 1999 SL2 - Owned since new, 272K miles (ALAS Sold) 1964 Chevelle - restoring 1965 Chevelle 2 dr post - driver
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11-04-2011, 12:28 PM
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Super Member
 
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Re: 96 Saturn high idle in neutral
1-If you haven't done so, replace the faulty round nosed plastic coolant sensor with a flat nosed brass one. The faulty one causes rich running conditions.
2-Replace the old thermostat too if the temperature gauge hovers over the 1/4 mark. You'll have better heat too this winter. This in conjunction with the faulty coolant sensor causes higher idling. 3-Once the above are taken care of, a worn tps is easily tested. The next time the idle remains high, park and shut off the engine for a restart; without touching the gas pedal, if the idle returns to normal then its a worn out tps. Replace it. Perform step 1 and 2 before step 3. ... *The CPS is the heart of the entire EFI system. No cps = dead EFI system* *There's more to a/c than just a few cans of refrigerant* *There's more to brakes than just replacing parts*
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11-06-2011, 12:09 PM
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#5 | ||||
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New Member
Join Date: Nov 2011
Posts: 2
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Re: 96 Saturn high idle in neutral
Changed out the ECS and the rpm's are back to a more respectable level. Interesting enough after the first test run I recieved a P0500 code (VSS). Erased the code and it never came back.
Thanks for your help.
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11-13-2011, 07:50 PM
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#6 | ||||
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Junior Member
Join Date: Nov 2011
Posts: 10
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Re: 96 Saturn high idle in neutral
I had the same prob but now my engine check stays on and my coolant level
came on.
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11-15-2011, 11:06 AM
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#7 | ||||
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Member
Join Date: Mar 2011
Location: staten island ny
Posts: 221
2001 SL
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Re: 96 Saturn high idle in neutral
What is the ECS??
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11-15-2011, 11:56 AM
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#8 | ||||
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Super Member
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Re: 96 Saturn high idle in neutral
ECS or more commonly known as ects - engine coolant sensor, engine coolant temperature sensor.
... *The CPS is the heart of the entire EFI system. No cps = dead EFI system* *There's more to a/c than just a few cans of refrigerant* *There's more to brakes than just replacing parts*
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