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| Forum name | Performance/Engine |
| Topic subject | Idel up 2500 rpm then drops, and back up to2500, over and over... |
| Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=24939 |
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24939, Idel up 2500 rpm then drops, and back up to2500, over and over... Posted by Othoniel, Jun-09-02 07:40 PM Hey guys.... Here's my problem. Frist thing my check engine light is on. Checked the codes by on, off, on, off, on..... 36, 13, 25. When I start my car it idels and 3000 rmp for less than a minute, then drops and jumps up to 2500 rmp and then drops again and keeps doing that as longs as the car is running. I took it to the dealership and they said to replace the TB and the intake manifold gasket. Did that. I replaced every sensor on the TB, every sensors on the intake, and the O2 sensors. I replace the ECU. The only thing I haven't done is replace the EGR and vacume hoses. I just want to know if anyone might have some helpful info. Maybe I'm looking at the wrong things? Any help with this matter will be greatly appreciated. I am at my wits end and am just about to say screw it and trade it off for a Honda or a VW. lol Thanks..... Othoniel othoniel@attbi.com | |
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24940, RE: Idel up 2500 rpm then drops, and back up to2500, over and over... Posted by Fast420A, Jun-09-02 07:56 PM Could be a vac leak, I know my car idles at 2000 or so when there is a vac leak. | |
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24941, RE: Idel up 2500 rpm then drops, and back up to2500, over and over... Posted by Michael_97RS, Jun-10-02 12:52 AM Definately start with vaccuum, check your lines and connections. From there start looking at sensors, TPS, IAC, MAP. | |
