Vehicle won't go over 55 with new transmission.

SHARPSHOOTER_26

MEMBER
1995 FORD PROBE
4 CYL
2WD
AUTOMATIC
112,000 MILES

My wife has a 95 Ford probe. Have had it for 8 months and have already spent $4,200 on it. Has a new tranny with 3 year warranty and have put 3 throttle sensors on it. It appears that the sensors have been the issue so far, but I believe they have disguised the newest problem. While making a routine 40 mile road trip the other day, the vehicle began being very stubborn. By stubborn I mean it refuses to go over 65, then after fur thing driving, it refuses to go over 55. At one point it got so bad as to slow down to 30 going uphill. When in low gears the car kicks ass! But after second it's not worth a darn. I strongly believe I may be facing a fuel pump issue, but would like professional confirmation. If you could provide any guidance I would greatly appreciate it.

2 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

You can easily rule out a fuel pump by monitoring the fuel pressure. I kinda doubt that will be the issue. I think I would test for a plugged up Catalytic Converter.

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Sunday, February 8th, 2015 AT 5:51 AM

KEN L

MASTER CERTIFIED MECHANIC
47,490 POSTS

It sounds like to me it could be a bad MAF sensor. I would try swapping it out because if the sensor starts to go bad it will not leave a code.

Here is a guide that can help as well:

https://www.2carpros.com/articles/engine-has-low-power-output

here is the location of the MAF sensor. Also, change out the fuel filter as well. Check out the images (below). Please let us know what happens.

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