problems with slow return to idle.

[griser]

Hi all. I've got this problem that have bugged me for some time. My engine revs up fine but returns to idle slower than it should.

I've replace the TPS, the CTS, the thermostat, IAC, both oxy sensors (both were bad)and replaced a few vacuum lines. I cleaned the Throttle body and checked the cable and throttle spring all look good.

It also revs up to about 3k on start. My vacuum shows 17-18 psi

It's a 97 eclipse with a 420a.

Any help would be vastly appreciated.

 

[dakang]

Hi all. I've got this problem that have bugged me for some time. My engine revs up fine but returns to idle slower than it should.

I've replace the TPS, the CTS, the thermostat, IAC, both oxy sensors (both were bad)and replaced a few vacuum lines. I cleaned the Throttle body and checked the cable and throttle spring all look good.

It also revs up to about 3k on start. My vacuum shows 17-18 psi

It's a 97 eclipse with a 420a.

Any help would be vastly appreciated.

Do your rpms settle back down after start up or does it stay there? I know you said you checked the cable but it sounds like a throttle cable adjusted too tight.

 

[griser]

Do your rpms settle back down after start up or does it stay there? I know you said you checked the cable but it sounds like a throttle cable adjusted too tight.

Yeah they return to normal. It does this with the cable tight or loose. Doesnt seem to matter