924 Hesitation

[Thorvinsnw]

My 924 is having some hesitation problems under a load, meaning only in gear.  I already gave it a full tune-up, plugs, wires, cap, rotor, air, fuel filter, oil change.  Also put cleaner in fuel.  Runs fine, but hesitates in gear, also the tach stopped working at the same time.  Is there a connection to the two problems?  Has anyone else had this happen and if so I would really appreciate any info.

[trevornaidoo]

You should post in the rennlist and/or pelicanparts 924 forum as well

[Ben951]

DME might read the tach/use info it is no longer getting and put you in some sort of limp mode. Need to go to a tech forum.

[cjbcpa]

COnsidering what you have already swapped out, could be a DME or harness problem, especially of both are original. Where are you located? I might be able to recommend a shop.

CB

[MikeKling]

Provost Motorsports really has developed a niche in servicing 924's. They have built and maintain several as Club Race cars. I would suggest ringing them up and ask their advice. 609-298-3555. They are located in Bordentown, NJ.

[michael lang]

I don't know those cars too well but what you are describing sounds very much like some sort of sensor failure. Possibly a coolant temp sensor or maybe a Mass Air Flow Sensor. What have you tested and what have found?