I think I have solved the problem I disconnected the battery to re-set the computers and it seems cured for the moment I think think the gas ECU got it's knoickers in a twist and was sending a confusing signal to the main ECU I will post again if the problem returns Nevyn

Hi I think it does i have replaced mine with a HDD MP3 unit but i am sure I got the code for the original head unit from the dealership also (Note for a future discussion) Changing the stereo head unit on these is frought with problems and not to be done unless absolutely necessarry...

I wouldn't count on it if the security systems detect any "messing" with the electrics it will likely "secure" your vehicle best to make sure you have the key code before you mess with anything and be aware that if your battery runs completely flat (kids leave the interior light on...

Oh and to reply to rodent's comment the big deal with changing the battery on a P38 is that you have to be careful make sure you do not have the keys in the ignition and I generally leave the door open too. If you do not then when you re-connect the battery the car is likely to lock...

Thanks guys I think it is solved (fingers crossed) The Idle control valve is a new one so I discounted that. It occurred to me that the batterry replacement mentioned was a red herring and that in fact in changing the batterry the previous poster had re-set the ECU. so I disconnected...

I have this exact same problem did a new battery solve it ? Can anyone else help ?

Don't but a '96 over 80k miles unless it has had a new engine I am on my second '96 the current one was mint when I bought it, full service history well cared for etc. etc. and I have still ended up having to drop in a new block at 120k miles now I am also getting all the problems with...

Aaaaaargh Right so i changed the stepper motor on the inlet and Woohoo it was fixed! ran lovely for a couple of months well pleased Now it has gone nuts on me again It constantly idles at 2000 revs and has developed a bit of a misfire too any suggestions has my stepper gone...

Thanks for all the replies guys Just an update for you I took the stepper motor off and cleaned it up, it was reaqlly gunked up anyway after this it seemed to run purrfect for about 3 weeks now it has started to do it again so well back to square one I will try some of the suggestions...

Hi Just to update you guys it does it on Petrol too and runs worse on petrol than gas if I run on just petrol for a few days it does it less often but still has the fault I have been told I should check the throttle stepper motor and so will let you know how this works out... any...

Hi I have read this with interest and wonder can someone tell me where to find this "stepper motor" What does it look like and where do I look much appreciated Nevyn

Well this one has me stumped I have a 4.6 P38a on gas with a recent new engine (so no comments about cracked blocks and slipped liners ;) The damn thing refuses to idle... sometimes! it is completely random I cross my fingers every time I turn the key and sometimes it runs fine others it...