I recommend to carefully do one replacement and check engine.
No change= go to the second change and check engine
and so on.
It is hard to hear from the video but to me the injection unit and/or the controle is out of line.
On the other hand it sounds like the CTS is informing the ECU " cooling water temperature is going up and down". But then the car would idle 1200 (when cold) or 850 Rpm (when warm). So the Rpms would move between these values. Did you check if the cables of the CTS are ok?
That is why I assume that the mistake is with the injection unit. .
checklist:
- False air caused by vac pipes.
- False air caused by not correctly fixed vac hoses
- Accelerator cable wrongly adjusted
- Stepper is not correctly controlled by ECU
- Stepper defect
- CTS and/or cable defect
I added a paper with some remarks from other SPI drivers which have had similar problems
Idling up and down.doc 27K
11 downloads
Found another hint in an English Magazine:
RESETTING THE ECU
you reset the ECU every time you turn it on - it's why you cant reprogram the MEMS ECU
pressing the accelerator 10 times, with ignition at position 2 , recalibrates the TPS for the ECU, as they wear over time, and can give false information to the ECU - the usual "boost" in power that most people discover, is because their injection system is now actually working properly :wink:
TPS = throttle position sensor; a variable resistor that's fitted to the butterfly so the ECU can know how far your foot is to the floor
Edited by Alpenflitzer, 18 December 2015 - 07:09 PM.