Q: My car won't go past 35mph

asked by on October 17, 2016

Hi. My car will not shift to third gear n it wont go pass 35-40 mph without the rpm going higher. I got a rebuilt tranny about 11 months ago n the car was running great for about 4 months. I went up a hill n stepped on the gas n sped up to 55 mph n then the problem came back that instant. I was unable to go into 3rd gear again n couldnt go pass 35-40 mph. The rpm would go higher but my speed didnt want to go faster. The oil meter would go higher when i stepped on the gas n would go back down when i let go. I had someone look at it n tried to find the problem but no progress. The head gaskets has been changed with new bolts, changed my spark plugs, flushed out my fuel system n put the car back together. It drives but it still will not go pass 35 mph. Sometimes when i put the car in drive it says nuetral. When i was on a hill one day the tranny fluid spilled out. Like something was loose.

My car has 160000 miles.
My car has an automatic transmission.

Hi there. From the description you provided, your vehicle has problems with the transmission again. You stated it will not shift into 3rd gear again, like before the transmission was rebuilt. If the transmission is again the problem, it should be covered under warranty. It could be a faulty shift solenoid. The shift indicator not reading properly could be a faulty transmission position sensor. If this is an overall lack of performance issue, according to your last statement, then possibly you have a restriction in the exhaust system. I recommend having your vehicle’s problems inspected and diagnosed by a certified technician from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

My car gets stuck in low gear when decelerating

Hi and thanks for contacting YourMechanic. It sounds like that the low speed shift sensor has failed in the transmission. This is common occurrence to the transmissions in the Chrysler vehicles. I recommend replacing the low speed shift sensor and...

Lost half a tank of fuel in less than 2 miles. the tank is empty. can't see a leak

I would first get a 5 gallon gas can and put it in the tank to see if gas gauge registers the fuel. Then turn on the key and listen for fuel pump operation to see if pump runs. Recheck...

Belt squeal increases with speed

Hi there. Usually when a belt makes the squealing sound which increases in pitch and volume with the increase in engine RPM it is due to one of two things. First, the belt may not be properly tightened or is...

Related articles

2012 Chevrolet Equinox vs. 2012 GMC Terrain: Which One Should I Buy?
The mid-size crossover SUV category offers the comfort and size of an SUV, but on the platform of a car, giving it the look and feel of a large hatchback. The unibody construction typical of passenger vehicles is used instead...
How to Get GMC Dealership Certified
GMC car dealerships offer automotive technician jobs to mechanics who are certified through one of the many programs they have available.
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...