500 rpm idle?

[dthquazi1]

i was driving home at night and decided to log a wot pull. Later when i get off the freeway i notice my idle is at 500 rpm and i have no volts comming from the o2. I have had problems with my alternator recently BTW. Also to volts drop to 11 or so. It stalls most the time when i put in the clutch. What could this be?

 

[JASON ROSARIO]

Sounds like an alternator issue. Bring it by autozone or something and have them test it for you. It should be at least 14.0. If not time for a new one. Another way to test the alternator would be take the belt off and spin the alternator pulley by hand. If the pulley just keeps spinning you'll need to replace it. They should have drag to it and should not continue to spin freely.

 

[unior]

Another way to test the alternator would be take the belt off and spin the alternator pulley by hand. If the pulley just keeps spinning you'll need to replace it. They should have drag to it and should not continue to spin freely.

i dunno what you mean about the spinning thing - its not like any alternator pulley will spin forever... - and new alternators don't really have any resistance....

just check with a voltmeter

 

[dthquazi1]

i have been watching it with my voltmeter on my logger and my turbo timer. It drops only at idle but is fine when im driving around. I just tried it and it seems fine. but the idle is still way outta whack.

 

[dthquazi1]

when its doing this the isc is going. I can hear it moving like when you start you car and it moves. Could it be my isc. Also i messed with my idle and it doesn't help. Could this also be a computer problem.

 

[unior]

do the no volts from the o2 sensor and bad idle happen at the same time?

o2 sensor could be on the fritz

 

[dthquazi1]

yeah they do so i am leaniing towards that. I figured my isc had something to do with it so i had it checked it today and it was bad. After replacing the isc it still did it so we checked the ecu...abd the caps were bad. After that it still does it so now im onto the o2.