Experiencing Rough Idle when Warm?
pdavis »
About 2 years ago, after a major service (approx 110K) I noticed that the idle was a little odd and seemed to hunt slightly on occasions. Over the last 2 years the problem has got worse to the point where the idle dips to about 500 and jumps up to 1000 very violently and quickly, making the lights flash (rather embarrassing at traffic lights). This happens all the time now, was intermittent. More recently it misfires and belches out smoke when started from cold and won’t accelerate smoothly until warmed up. If I disconnect the battery and leave it for 20 mins the cold start problem goes away for about 5 days and then returns (weird).
Today I started the process of going about cleaning the ETM but due to bad weather had to abandon the task and reassemble the car. Going to try again tomorrow weather permitting.
I did notice that the intercooler hoses, both top and bottom have an oil residue it them, the lower one worst of all. Not sure if the 2 are linked in some way. I have replaced the MAF but no difference, also repaired an oil leak on the crank case, which turned out to be a loose bolt (2nd to last one I checked) which filled the top of the engine with oil and resulted in lots of oil on the floor. This is all cleaned up and no longer leaking, not sure if this could account for the oil in the air system or not??
If anyone else has had this idle problem and has any ideas how to fix the problem then please let me know.
ETM cleaning solves idle, MPG problems
pdavis »
ETM cleaned yesterday, have small hands which turned out to be a blessing for a change!! After 40 mins scrubbing with a toothbrush and used a whole can of carb cleaner, problem completely resolved — lots of hard gunk out of the way and the car runs silky smooth and performed better than it ever has since I have owned it! Well worth doing and not too difficult, easy to get to when the fan assembly removed. Feeling pretty happy and relieved that £15 worth of stuff (new gasket and can of cleaner) has had such an amazing result!!
Last Updated on August 19, 2020
1 Comment
ahh, now I recall they said my throttle had to be cleaned….