1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, TPS - 1996 Deville in Past Cadillac Vehicle Discussion; I have had hesitation, performance, hard starts and MPG issues with my 96 Deville, I have replaced the MAF sensor/casing, ...
- 09-06-12 08:19 PM #1Cadillac Owners Member
- Automobile(s): 1996 Cadillac Deville
- Join Date
- Sep 2012
TPS - 1996 Deville
I have had hesitation, performance, hard starts and MPG issues with my 96 Deville, I have replaced the MAF sensor/casing, O2 sensors, cleaned the throttle body, used injector cleaner and fuel treatment. I have also replaced the EGR, crank shaft sensors and radiator recently. The plugs and wires are a little over a year old.
While cleaning the throttle I removed the TPS and the hard start disappeared. I went for a test drive and the car had increased performance but not up to par and still the hesitation. When I returned I thought I would try removing the TPS and see what happened, I had no hesitation and increased performance but MPG was still down.
What should my next step be, I am almost convinced just to leave off the TPS and deal with the MPG.
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- 09-06-12 08:23 PM #2
your NEXT step should have been your FIRST step -
check for Diagnostic Trouble Codes -
if you don't know how - go here and read the ENTIRE post -
if you have any codes - post them here -
ALONG WITH THEIR DEFINITIONS -
- 09-07-12 10:05 AM #3Cadillac Owners Member
- Automobile(s): 1968 DeVille, 1985 Seville, 1990 Deville, 1994 Deville,
- Join Date
- Oct 2009
- Tampa, Florida
It's truly ashame, but every Cadillac owner learns this very hard lesson. First step, pull codes and never through money at a Cadillac ! My father, who has owned Cadillacs since I was a kid, thought you work on this like it was a '64 Chevy, he learned the hard way, knowledge is the key to saving money, your sanity and your car! BTW, those TPS do go bad and will make your car run terrible ! I'm curious what you learned, so please let us know! I'm a graduate of the School of Hard Cadillac Knocks !
- 09-07-12 11:25 PM #4