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924 Hesitation
05-24-2012, 01:20 PM
Post: #1
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.
05-30-2012, 10:11 AM
Post: #2
You should post in the rennlist and/or pelicanparts 924 forum as well

1991 964 C4
2008 Cayenne
07-26-2012, 01:35 AM
Post: #3
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.

944 Turbo S
07-26-2012, 03:12 AM
Post: #4
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.


Chris Barone

1986 951 Black
1986 911 Coupe
1996 911 Coupe
2014 Audi S5

2017 Chevy Colorado

1986 951 Guards Red, what else. RIP 10/17/2009
2001 TDI (retired after 262k miles)
2011 Golf TDI (dieselgate buyback)
02-13-2014, 07:40 PM
Post: #5
RE: 924 Hesitation
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.

Mike Kling
PCA National Instructor #201305138
2012 High Speed Driver Award
2008 Broken Crankshaft Award
1995 968
1988 944
1995 993
02-14-2014, 08:25 AM
Post: #6
RE: 924 Hesitation
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?


89 Carrera


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