Strange RPM issue with efi 2014 cultus

engnr.mubashir (engnr.mubashir) 2017-10-13 20:53:11 +0500 #1

RPM needle is behaving like hell it going up and down frequently without any increase in acceleration happening with both AC or without. Had CNG installed.

tipu144 (Babar Ali) 2017-10-17 23:45:33 +0500 #2

Had same issue, just sprayed WD40 on clutch and race wire. My issue resolved. You may also try. It may heLp.

engnr.mubashir (engnr.mubashir) 2017-10-18 07:50:32 +0500 #3

Have tried almost everything but nothing is working I think there is some wiring issue. Have decided to get it scanned.

mzahid (mzahid) 2017-10-18 10:07:55 +0500 #4

Disconnect battery terminals
connect after 10 minutes.
Start the car and idle for 10 minutes, do not touch accelerator and all electronics should be off.
turn off and start the car normally.

abid110 2017-10-18 12:06:51 +0500 #5

Cultus's ecu is veryyy dumb. It forgets everythig with this process

abid110 2017-10-18 12:10:10 +0500 #6

Did you clean the Idle Air control valve (IAC)?

engnr.mubashir (engnr.mubashir) 2017-10-29 20:13:01 +0500 #7

Tried everything which you guys suggested but no success
Can anyone confirm if go for computerized scanning will this help me because I got no check engine light with this problem.

aftabrizv (aftabrizv) 2018-07-27 12:47:45 +0500 #8

I have the same problam in my cultus 2007 efi ,it is Throttle body problem ,it can solve by cleaning it by mechanic ,