New to this forum though not new to Berettas

[jpuetz]

I have a 1990 beretta Indy with the 3.1L and 5 speed i have done a lot of work on this car in the last year my question for the moment is that sometimes (can't figure a pattern to it) the engine will decide to start idling at about 3000 RPMs and i cant seem to figure out why honestly i have had nothing but problems with this car since i rebuilt the motor last winter lol

[90INDYLIN]

I believe it has something to do with the idle sensor, this seems to be one of the things with the Beretta. Hope this helps. Welcome to B'net!!

[jpuetz]

I forgot to say when i made the original post the Throttle positioning sensor is brand new and i replaced the Idle air control valve when i bought the car in march of 2008 about 15k miles ago

[Vampcrist]

Check the O2 as well I've heard this can do the same thing as well.

[woody90gtz]

Have you checked codes? Or data logged to look for anything unusual like a high MAP reading?

[jpuetz]

my check engine light has not come on i should be getting a scanner in a week or 2 so i can try and check more of that stuff out just hoping maybe someone else has had the same problem and new what might be causing it

[NMBeretta]

Welcome to Beretta Nation!!

[90INDYLIN]

This is Beretta.net !