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Forum: S-Series Tech 02-09-2016, 12:30 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

It was suggested to replace the tps with an OEM part back in post #30................. All you did was prove the pcm wasn't the issue.
Forum: S-Series Tech 01-25-2016, 11:14 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

Several members here have found tps' troublesome when they weren't OEM replacements. Its not wise to disconnect electronics in EFI systems since they're crucial to integrated systems. Once anyone...
Forum: S-Series Tech 01-12-2016, 04:25 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

If you're thinking coolant sensor for the third time, its probably fine and not worth replacing. You have a reader that tells you coolant temps as the pcm sees it. All you need to do is monitor it at...
Forum: S-Series Tech 01-12-2016, 03:24 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

It may and may not as all EFI systems depends on an integrated system relying on every sensor. The downside is the possibility of one component affecting others and throwing off programmed...
Forum: S-Series Tech 01-12-2016, 01:30 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

As suggested, replace the t-stat. 175F may seem close but not the operating temperature for a good t-stat.

Members posted what their t-stat looked like when it was removed. The rubber sealing ring...
Forum: S-Series Tech 01-12-2016, 08:27 AM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

Coolant temperature
Forum: S-Series Tech 01-11-2016, 09:46 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

Only one thermostat is used per car. Three temperature sensors; one intake air, one coolant and one transmission temperature sensor.

A reader is better for displaying actual coolant temperatures...
Forum: S-Series Tech 01-11-2016, 06:57 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

mdoogs, is your throttle stuck open or is the pedal linkage stuck? A cable operated throttle can be disconnected from the throttle body linkage to separate pedal/cable issue from throttle body....
Forum: S-Series Tech 01-11-2016, 06:46 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

deident0687, 1000-1100 rpm warm idle isn't normal. Normal warm engine idle is around 700-800 rpm. Something is telling the pcm to run a higher idle than normal. The coolant sensor and thermostat...
Forum: S-Series Tech 01-11-2016, 04:35 PM
Replies: 55
Views: 7,986
Posted By fdryer
Re: 2001 SL1 High Idle Problem

Your '01 is still relatively 'new' compared to older S-series cars. They're just beginning to show signs of pcm failure but only in rare instances. As a rule, car electronics are built better...
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