As you may recall my car suffered badly from the idling and stalling problem that a number of users have also reported in recent months. There has been a lot of speculation over the cause and likely cures and I started off with a map whack and an ecu reset to try and solve my problem. The ecu reset bought me some time but the problem returned quickly.

A few weeks back Chris Type-R was kind enough to send me his old, but working, MAP to try on my car. I fitted it 3 weeks ago and in doing so noted a lot of oil residue in the intake pipe and throttle butterfly. I wiped away what I could see with a rag but made no special effort to clean it. After installing the MAP I reset the ecu and performed a full idle learn process. This means allowing the car to come to full temperature (two fan cycles) and then waiting for 5 minutes adding any time that the fan is in opperation during your '5 minute learn'. This whole process is done with all the electrics off and takes - on a cold block - about 15-20 minutes from start to finish.

I've covered around 1000 miles since then and my idle has been fine with no shuddering, no big dips and most importantly no stalling. The car has, howerver, been a little more prone to kangarooing than it was but this is something I can drive around. Overall I'm hopeful that I've found my cure in the new MAP and fingers crossed I'll enjoy may more miles of trouble free driving.

IMH and non-expert Opinion I believe that the oil in the intake system is contaminating the MAP sensors. A whack often will cure this but in my case it buggered my MAP beyond a simple whack. It may also be the case that my wiping away of the oil helped. In that case if my problem returns I'll start with a full clean of the intake system and a whack/ecu reset. If that fails I'll replace the MAP again.

Hope this is of help to some of you

Kenny

 

Glad it looks like you've got it sorted

 

Posted here with Instructions

 

Thanks for linking that in Ade. I certainly don't think there is any harm in a clean if you have similar syptoms although I would advise people to accept the fact that even after a clean you may find you need to replace the MAP. There may be no link at all between the MAP replacement working on my car and the oil in the intake but I did notice when I removed my old MAP there was a little spot of oil where the 'nipple' part of the MAP goes. On that basis I'd be very confident my old MAP has oil in it.

A catch can has been suggested by a few members to prevent the oil returning to the intake system. Does anyone know where you can buy one or would you basically have to fashion one yourself?

 

type in oil catch tank on e-bay and take your pick
for it to be strictly leagal (mot)it must be fitted between the engine and intake pipe with no vent to air, some of the catch tanks vent to air with a small air filter.