Having problems with your 2000 Ford Focus ?
Recently replaced the fuel pump and Battery. Seem to run really rough, like it's RPM's are high. I drove it about 10 miles, then turned it off , started it up and drove 10 miles back to my house and it ran alot better. Could it need a tune up?
A very common problem with those is that the intake manifold leaks and causes the car to take in more air than what it should resulting in high revs, take it to a garage and get it checked, it should be an easy fix and shouldn't cost alot either.
Repair Help & Product Troubleshooting for 2000 Ford Focus
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