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DISCUSSION => Engine + Driveline => Topic started by: giorgakis14 on May 26, 2016, 11:23:40 AM

Title: engine swap few small issues
Post by: giorgakis14 on May 26, 2016, 11:23:40 AM

hey guys. i just completed a engine swap. i put at a e36 m42 into my e30 and i ran into a few small issues. first my idle is at 2k on start up and it stays up there untill i blip my throttle and then it drops to 900 second my temp gauge isnt reading anything. i ether hooked up the wrong harness to the sensor. if im correct the rear sensor on the head is for the gauge. i doubt i hooked up the wrong one but if thats not the case is the sensor different on the e36 then the e30? hence why it wont read any temp?

Title: Re: engine swap few small issues
Post by: Mimikrakra on May 28, 2016, 06:54:43 AM

Hi, you have an E36 or E30 ECU ?
For the temp sensor you certainely have an electric probleme. I have an E36 temp sensor and it work. The only difference is the indicator position.
With E30 sensor, hot engine, the indicator shows 1/2 (12h). With E36 sensor it shows 1/4 (10h).
You can't inverse the two connectors because the first as two pins et the second only one.

Title: Re: engine swap few small issues
Post by: giorgakis14 on May 28, 2016, 10:09:08 AM

I have the e30 ecu. So if I swap the sensor back to the e30 one it should be fine? Reading at 12?

Title: Re: engine swap few small issues
Post by: Mimikrakra on May 28, 2016, 10:30:38 AM

Yes.
For your idle probleme try tu put some WD40 in the actuator or verify your accelerator sensor is good.

Title: Re: engine swap few small issues
Post by: giorgakis14 on May 28, 2016, 08:16:55 PM

yup it was the sensor thanks very much.