THE ENGINE: PSA's XU9J4 (Mi16) Running Motronic ML4.1.
THE PROBLEM: A few nights ago I made a short journey into town. The engine started and drove fine for 5 minutes and then midway through warming up it started missing badly for a few minutes and then it completely died! So, I restarted her. And it was ok.... The next day I was a bit I miffed. But I found the TPS connector to be loose and thought it might be that. Alas I did the same journey tonight and the problem happened in exactly the same time and way as a few nights ago!
A bit of background...
Engine has always had a starting problem. Starts fine when stone cold. Starts fine if it was switched off and restarted within about five minutes. But after that approx. 5 minutes and say 12 hours it will turn over for 5-10 seconds before reluctantly starting.
Also... If I'm drifting along in traffic at say 2000rpm in 2nd gear with foot off gas pedal and then I go to accelerate the car will jerk a few times before smoothing out. And when taking foot off accelerator it jerks again as if the fuel cut off wasn't immediate...
I'm thinking all these are related. And it seems like whatever is playing up is not liking certain temperatures.
I know it's very hard to diagnose this without you actually testing the engine yourselves but just maybe the likely cause of this will stand out to one of you.
Thanks Kris