Rough Idle ? hesitation 3000-4000rpm ? Items to check
 

Rough Idle ? hesitation 3000-4000rpm ? Items to check
Just to post two more items to check if you have the above problem :

*) Inlet Temperature Sensor

*) MAF Sensor

Why ?

Just had a new contact-less ETM fitted, and still had rough idle to the point of it stalling and hesitation 3000-4000rpm.....

Found two faults that my air inlet temperature was reading -40 degree's (was a broken cable to the sensor)

My MAF sensor was faulty, only replacement is the BOSH one, performance is excellent now (better than when I bought it 5 years ago) and its so smooth on tickover and acceleration.....

Where is the inlet temperature sensor and how do I check it?

Please help!! Lol

Just replaced with New throttle bodie and position sensor yet stil got problems. Ie management flashing,NO power,Cutting out and hesitating to start? Im pulling my hair out after 3 weeks of trying. Also clicking noise from relay sometimes when ignition on? Could it be MAF? Please help guys. Much help realy apreciated!!:) x

Intermittant poor running/hesitation/misfiring
 

Hi, sorry to hijack this thread but didn't want to start a fresh one as the symptoms described are similar to mine.

The story goes: Car would sometimes go into limp home mode upon moderate acceleration (no throttle response, idle between 2000 and 3000 rpm and pulsing) Diagnosed as TPM. Replaced with new one from Volvo main dealer and programmed to the car. Car now running better than it ever has. This lasted for approx. 3 weeks when whilst driving to work, car would surge forward slightly then start misfiring really badly. it still accelerates cleanly up to whatever speed you like but once it gets there then starts this misfiring problem again. Sometimes, the problem will clear it's self after a couple of miles or so. Engine light will be on and message reads engine system service Urgent. My garage has advised that it could be the MAF as the TPM is new. Does this sound reasonable to you guys?
I'm getting to the stage of getting rid of the car and buying an older V70 that doesn't have this drive by wire system !

Thanks
Rob