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Discussion Starter #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:
 

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Try following the throttle reset procedure.
 

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Disconnect the battery for an hour, reconnect battery,
turn the ignition key to MAR for 90 sec. then to STOP in 90 sec.,
start the engine without touching the accelerator and let the engine idle until the cooling fan starts.

:)
 

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Discussion Starter #9
do i have to disconnect the battery to do the throttle reset?
or is it worth doing a ecu reset and how do you do that?
 

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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
 

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Discussion Starter #11
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
i would love to get alfadiag but i dont know what cable i need or where i can get one from.

my car is a 1998 S reg 2.0 TS if it helps
 

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Do a ecu reset as berni29 describes, either with alfadiag or examiner or as I described earlier,
you can also live with the idle speed for a while and let the adaptive parameter in ecu adapt
to the new condition (BMC CDA induction).

:)
 

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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
 

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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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