1998 Ford Mustang Reving/problems

J1989JOHNSON

MEMBER
1998 FORD MUSTANG

Engine Performance problem
1998 Ford Mustang V8 Automatic 139500 miles

My car will (random times) start reving when I accelerate. The rpm goes from low to 2+ very fast. This incident only seems to happen when I change the car from park and start driving or when I am idle/at a stop sign and start to get back up to speed. I have had problems with this car and got some work done already. I had new struts/shocks put on, the transmission serviced (filter, oil, etc.). My mechanic said that the transmission oil was disgusting. And appeared to be many types of fluids mixed together. I most recently had the oxygen sensor replaced and my mechanic also told me that the previous one was barely working. Today, I got an oil change hoping that, for some reason, it would fix my reving problem when I accelerate. I have had an experience with a car whose transmission went. And it was a more serious case of what seems to be happening with my mustang. PLEASE. Try and help me figure out what the issue is. I love this car and havent had it for very long. I need to get this issue resolved ASAP. Thanks!

1 Reply

HMAC300

MECHANIC
48,600 POSTS

If your trans decides to go outyou'll know it. It may already have done it, especially since you've change d fluid in it at high miles. If the car is revving and not going anywhere then it's your trans problem. If it is revving and moving then try choke cleaner on the throttle plate and TPS switch. That may be what's happening is the accelerator is sticking due to crap on the throttle plate and TPS switch.