My car won't go past 30 MPH


Asked by Essplan Sep 30, 2017 at 09:28 PM about the 1997 Ford Taurus G

Question type: Maintenance & Repair

So to start out, my car one day started to shake (very noticeable, like a jerk) when I would stop at a light or something similar, sometimes even turning off when I was stopped. This would not happen to much, maybe once a week. A few weeks after that I was driving home and could not get past 30 mph hitting about 5000 rpms. I then let my car sit for a few days, and tried driving it again. This time it was driving a little better but the car would do one big jerk when it was shifting to the next gear and the shaking/ car turning off when stopped. After a day or two the car was then again unable to get past 30 MPH. I changed out the transmission fluid and filter and it still wont get past the 30mph problem and the car shaking when idle.

6 Answers


scan for codes , could be clogged catalytic , egr , tranny , thats an old car is it worth putting money in to ?


I got a C1145 and C1175 on my scan which are my speed sensors. Would those cause the car not to shift? Also last night I found a hole melted in one of my hoses that is coming out of the engine. It had a green cap on one end of it and, the hole sounds like air is getting sucked in there when the care is running.

1 people found this helpful.

the vacuum leak would be the first thing to take care of , it might be setting off codes or causing sensors to throw them , you'll have to get the code definitions I don't know them off hand , the codes tells you where the trouble is not necessarily what to replace , I mean the speed sensors could be bad but with both going it might be something else setting it off

2 people found this helpful.

So I am wanting to get the hose fixed to see if this solves my problems, but I am unsure what this hose is or what it does. I went into auto zone and asked but the seem to have no Idea. I hope that this picture helps

I had the same problem as the op. I replaced the ‘split hose’ & the car still has the same ‘won’t go faster than 20-30mph’ issue. Bought 1 foot of 3 diff sized ‘hose’ from auto zone to replace the broken section.

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