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Fast idle after bmc cda installed

2K views 15 replies 7 participants last post by  Mike2909 
#1 ·
I've just fitted a BMC CDA induction kit and cleaned inside the throttle body also, but now the car will idle between 1000-1300 RPM.
I have also noticed before i changed to BMC that when i touch the accelerator and take my foot off it again it starts to fast idle until i "blip" it quickly and it returns to normal.
It is still doing this now and i have checked the throttle linkage and everything looks fine and operating correctly

Please can someone help?:confused:
 
#10 ·
Hi there

Adaptive parameter and idle control valve can be reset by hooking into the car's ecu with a laptop and then using software. (I use alfadiag).

You might find that with time it resets itself. It does not seem wildly out, mine was revving at 2500 after I cleaned my throttle body. Also I canged my MAF today and the idle is a bit over the place, so I will let it settle down. Otherwise it's out with the laptop for a zap.

Berni
 
#13 ·
Hi Dave

The cable and which one you need has been discussed on here a fair bit. I have a yr 2000 TS with an injector warning light, and I have a 16pin diagnosis connector just above the fuse box to the right. It might be covered with a cap. Look there first. If not then it is a 3 pin job on the passenger side by the centre console under where the stereo is (apparently..... I spent an hour looking before finding my car has the later connector).

16 pin is easily obtainable off of ebay.

Berni
 
#15 ·
Mine did the same after cleaning the butterfly and inlet manifold, but reset of ECU/ Throttle posn sensor sorted it out. As above, remove battery 30mins should be sufficient (-ve off first, then reconnect -ve last). Ensure heating controls etc all switched off.

GTV 2959 24V '98 section ENGINE Air supply system 10, page 127 9-1998

Remove battery -ve terminal for 20-30mins, then reconnect
IMPORTANT - During the procedute (from when the instrument panel is powered to the end of the self-learning procedure), do not press either the accelator pedal, the brake pedal or th eclutch pedal.
- make suer the ignition key is at STOP.
- Turn the ignition key to MAR
- Wait for 60 seconds for the ECU to check the throttle internal spring and the maximum/minimum angular positions.
- Turn the key to STOP
- Wait 15 seconds for the ECU to record the learnt values in the EPROM​
 
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