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1998 Dodge Neon Loses Power

Tiny
LEAADULIN
  • MEMBER
  • 1998 DODGE NEON
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
My car starts up and takes off fine, but once going down the road at a speed of 40 -60 mph it will lose power to 15 - 20 mph. It then will take off again after losing power for a few minutes and get back up to speed and lose power again. We have had it do it 5 - 10 times in a 30 minutes period, then we've had it happen only 1 time in a 30 minute period. For the most part it happens alot, but there has been incidences where it didn't. We have had it to 3 mechanics and none has figured it out. Thanks
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Tuesday, April 29th, 2008 AT 9:44 AM

6 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
I would check fuel pressure and flow
check catalytic converter operation
scan system for codes
check tranny and tranny fluid check tranny for codes
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Wednesday, April 30th, 2008 AT 6:12 AM
Tiny
LEAADULIN
  • MEMBER
  • 4 POSTS
We have checked all of that. It has a new head, spark plugs and wires. Also a new timing belt which we have check again. Alot of brand new sensors and relays. No codes are being put out, it basically saying that the car is fine.
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Wednesday, April 30th, 2008 AT 6:24 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
But you know it not fine
you need to hook a fuel pressure gauge on it and take it for a ride while watching the fuel pressure when it does it
also check if you have any codes stored in the TCM and not the PCM
some time you need to step away take a brake and start from the basic
disconnect the O2 sensor and drive it and check if any better replace O2 sensor
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Wednesday, April 30th, 2008 AT 6:38 AM
Tiny
LEAADULIN
  • MEMBER
  • 4 POSTS
We have checked the fuel pressure by doing that, I haven't heard of a TCM for the car, we have replaced the PCM as well and the O2 sensor. Thanks
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Wednesday, April 30th, 2008 AT 6:42 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Sorry I couldn't help

you did it all !

Good luck and happy driving
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Wednesday, April 30th, 2008 AT 4:57 PM
Tiny
LEAADULIN
  • MEMBER
  • 4 POSTS
I just wanted to let you know that we did figure out what was wrong with the car and it actually turned out to be a faulty wire to the o2 sensor. Fixed it up and she runs good as new. Thanks for all the suggestions.
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Tuesday, May 27th, 2008 AT 1:00 PM

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