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1994 Toyota Corolla can't get past 35 mph on highway with steep uphill grade

I'm having a problem with my 1994 Toyota Corolla and going uphill at speed. As I was going up a steep grade (8%?) on Highway 26-W, where I should have been able to do 45-50 mph, I could only get her up to 35, with pedal to the metal. I had to turn on my emergency blinkers and the car was lugging the whole time; I was concerned it would stop altogether. Later (after about an hour parked), it did the same thing on anything resembling a slope for the rest of the day. However, I haven't had a problem accelerating to freeway speeds elsewhere. I've been avoiding hills since, so I haven't had a repeat of the problem, but I live in a city with a lot of them, and 26-W is something I can't keep avoiding forever.

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Way back when, I had a '73 Corolla.

It was for mostly around town, which it did ok.

One time went on the freeway, and couldn't get it to go over 45 MPH.

It turned out to be the fuel filter needed replacing.

Open the hood and disconnect the negative battery cable.
Locate the fuel filter. It is in a bracket that is located on the firewall (near the brake master cylinder).
Clear away anything blocking access to the top of the filter.
Remove the threaded banjo bolt at the top of the filter, using a backup wrench to keep the filter from twisting.
Loosen the flared fitting at the bottom of the filter using a flare-nut wrench, if possible.
Remove the bracket bolts, the used filter and the filter support bracket.
Install the new fuel filter in the support bracket on the firewall using the bracket bolts.
Attach the inlet and outlet pipes to the filter, using the new crush washers that are supplied with the filter, and tighten them.
Replace anything that was moved for access to the filter and reconnect the negative battery terminal.
Start the car and check the filter for leaks.

Posted on Feb 12, 2014


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SOURCE: the car will not accelerate;

this sounds like 1 of 2 possible problems.
a bad headgasket or a clogged catalytic convertor. i would lean more towards the convertor

Posted on Jul 16, 2008

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SOURCE: traction active


Posted on Nov 18, 2008

  • 6982 Answers

SOURCE: Highway driving problem. City driving ok.

If you have been to three shops,I'll assume that all the basics have been covered. Did anyone check computer stored codes? What did they see? If you are going to try to fix it yourself, you will need to get a manual and check each and every component, one by one. Also, outside of the realm of computer stuff, check converter to make sure its not partially plugged. At low rpm city driving it may be flowing just enough to get by on. Also check that fuel is clean and has no water in it.

Posted on Feb 26, 2009

  • 76846 Answers

SOURCE: accelleration onto highway

have u replaced the fuel filter to see if this helps? that is what I would do 1st.

Posted on May 13, 2009

  • 246 Answers

SOURCE: Brake pedal went out on me going about 65 on the

it sounds like you've got an issue with the engine vacume line going to the booster. there's an in line one way check valve that keeps vacume in the booster in case of a loss of vacume, like if your truck stalled while driving. but there should always be vacume with the engine running. so check the vacume line going to the brake booster for kinks obstructions, and leaks.

Posted on Feb 17, 2010

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