Weird RPM drop question

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layinthesmack31

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Sometimes when i am driving my SHO i notice that when i get off the gas the rpm's will drop down low enough to kick the oil light on and then then go back up. that car has never stalled from this. the tach just reads low and then goes back to normal. I have replaced the crank sensor so i know that it isnt this because the prob i had with that was totally different. i also think i have to clean out the intake runners cause i get code 332 and i replaced the dpfe sensor and the CE light still comes on with the same code. But i just dont know what would make the cars rpms go down like that. It also happens too when i brake and go to turn and it feels like i lose power steering for just a sec then it comes back on. Please any help would be greatly appreciated. If u need more info let me know. thanks

Matt
 

sideSHO

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Try cleaning your MAF sensor and IAC valve.
This is a pretty regular problem with an SHO.
Hope this helps.
 

SHOtimer

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With that code you need to clean the EGR nostrils on your intake. If your intake has never been cleaned it would probably benefit you to clean out the whole thing, mine never threw a code but ran a lot better with a clean wind pipe. Also, with the idle, it just probably needs to be reset.

This is from an old post, but it is what you need:

NOTE 1: The Ford owner's manual directs that the idle program be relearned following any service when the battery has been disconnected. To do this, it states that the engine should be started and allowed to idle for the (approximately) 70 seconds without touching the gas pedal. Adding the accessory loads ensures that the EEC and IAC valve can accommodate the additional air flow requirements and still maintain the programmed idle speed.

NOTE 2: It is preferable that the car be driven immediately after setting the idle programming. While driving, allow the coolant temperature to rise to the normal range and run the car through its entire performance range.

Idle Speed Program Reset Procedure
-----------------------------------------
1) Disconnect the negative battery terminal.
....Optionally, disconnect the keep alive memory (KAM) connector in the small
....wire also landed to the negative battery terminal.
2) Wait at least 30 seconds.
4) Reconnect the KAM connector or negative battery terminal.
5) Start engine normally (never press the gas pedal).
6) Allow the idle speed to settle for at least 30 seconds.
7) Within 70 seconds of starting the engine, concurrently apply all accessory loads.
....a) Climate control to MAX A/C.
....b) Headlight switch ON, brights ON.
....c) Turn steering wheel slowly ~1/4 turn side to side.
....d) Press brake pedal.
....e) ATX SHOs only: shifter to DRIVE.
8) Do not turn off engine for at least 5 minutes.

Doug
 

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