Escort Cosworth Idle Problems

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24-02-2015, 07:41 PM

shoppel

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Escort Cosworth Idle Problems

Green Bosch 803
Marelli 3 bar Map
MSD Chip
Mongoose Decat
-34 Rated T3 Fitment Wastegate Actuator

What could cause this drop down in A/R ratio when idle drops down? I did nothing with the gas paddle!!

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24-02-2015, 08:57 PM

RSLUBBY

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Mine did the same thing and it had a leak on the plenum gasket

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25-02-2015, 06:07 AM

shoppel

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the gasket is new

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06-03-2015, 01:04 AM

Terry Pluck

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Could be the Lambda Sensor.
I had similar problems and it turned out to be this.

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06-03-2015, 01:38 PM

James @ M Developments.

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Make sure the P8 has had a reset done,

Check and adjust the base idle with the ISCV disconnected,

check the ECU voltage is stable, and check the lambda function as mentioned as a starting point.