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1994 Plymouth Acclaim Lost Power

Tiny
CENTER
  • MEMBER
  • 1994 PLYMOUTH ACCLAIM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
Driving along and all of a sudden the engen would not power the car. Slowed down to 5 mph and that was as fast as the car would go. I put in a new fuel pump and new fuel filter. Checed the throttle body fuel injector and it seems to be pumping. EGR valve moves freely. I can start the car and it will idel, however when giving it gas in park it will hesitate and die out. Getting some backfiering, and the Cat is glowing red hot.
have any ideas?
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Wednesday, December 3rd, 2008 AT 12:12 AM

7 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check timing
and timing belt
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Wednesday, December 3rd, 2008 AT 6:47 AM
Tiny
CENTER
  • MEMBER
  • 4 POSTS
The timeing is ok. It does jump due to the eradic ideling. Is there a way to test the throttle positioning sensor?
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Wednesday, December 3rd, 2008 AT 9:41 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
If u think its the TPS you can use a volts meter to check the volts as paddle pressed the volts should go up
and to a wide throttle volts 4.9V

I would suspect MAP sensor before the TPS
disconnect TPS does it start and run (it should )

check timing belt if slipped a notch or so
check dist. And timing

you said that the fuel pump is new
what do u have for fuel pressure?
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Wednesday, December 3rd, 2008 AT 1:32 PM
Tiny
CENTER
  • MEMBER
  • 4 POSTS
The throttle positioning sensor like you had said during idle and unpluggin made no differance. However when probing it I get an on or off. No variation in voltage. And it just spikes at 12 volts then down to zero. Then to 12 and back to zero.
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Wednesday, December 3rd, 2008 AT 11:21 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Something is wrong here !!
5 volts should be and no more
at idle it should be less then 1volt
and as you increases the throttle volts should go up no more then 5 volts
are u sure you are testing the TPS
and if so you should have a check engine light
with a TPS code
cycle key on off on off on off on with in 5 sec
check engine light blink codes (* ** code 12 ***** ***** code 55 ) and so on
check the TPS harness and plug


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Thursday, December 4th, 2008 AT 6:19 AM
Tiny
CENTER
  • MEMBER
  • 4 POSTS
Your right the TPS is functioning correctly.

I will double check the timeing.
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Thursday, December 4th, 2008 AT 10:02 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
All you need for timing belt from picture available to u for free just click below or click timing belt marks on the left
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Thursday, December 4th, 2008 AT 4:18 PM

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