Denrico Cloete

So this has been posted before but no threads has come to any fix,

I have fitted 3years ago on 295 000km my 2nd m271 c180 Kompressor engine, my car is Manual now 387 000km. Replaced all vaccuum lined, oil cooler and seal, waterpump and seals, new battery, new alternator.

Car now when start up, idle at 1500rpm- 1800rpm and only comes down on clutch release or when head lights is switched on.
Checked the following
Maf sesnor
Throttle body cleab
All vaccuum lines
Pvc pipe
Ovp fuse
Alternator voltage
Egr valve and pipes

Problem stil pressist.

Please help! 🙏