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Author Topic: high idle speed  (Read 762 times)

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sfcl

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high idle speed
« on: June 12, 2010, 08:38:45 AM »
Hi all,
On my 1992 multipoint EFI, I have removed and cleaned the throttle body and the idle motor, replaced the TPS by a brand new one, replaced all the seals and gaskets. Since that the idle is very high (between 1500 and 1800 rpm). Otherwise the engine runs perfect. Any idea? Thanks!
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sfcl

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Re: high idle speed
« Reply #1 on: June 12, 2010, 08:48:36 AM »
Solved! I've just had to disconnect the battery terminals and put the 2 wires in contact to empty the processor memory. All is ok now. Sorry.
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Offline sharpxmen

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Re: high idle speed
« Reply #2 on: June 12, 2010, 10:12:02 AM »
Quote from: sfcl on June 12, 2010, 08:48:36 AM
Solved! I've just had to disconnect the battery terminals and put the 2 wires in contact to empty the processor memory. All is ok now. Sorry.

hmm, weird, that shouldn't happen but might be b/c of the tps although should have recovered on it's own once you had the new one installed.
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Offline bootguy

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Re: high idle speed
« Reply #3 on: June 18, 2010, 09:17:45 PM »
Have been having the same type of issues, but mine was 2500 RPM at idle.  After resetting the computer it is doing around 1500 RPM.  I have to replace my gasket in the intake/exhaust manifold because it leaks like a sieve, could this be the problem?

97 YJ 2.5 auto
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Offline Jeffy

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Re: high idle speed
« Reply #4 on: June 18, 2010, 11:31:35 PM »
High idle is a good sign of an intake leak someplace.  TB and intake are you're suspects.
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