Q: My car won’t accelerate passed 20mph but the RPM accelerated all the way to 7 or higher . One day my heat went out

asked by on February 13, 2018

It started when my car heat went out all of a sudden then a few days later the heat came bck in and then left again . Now my car won’t accelerate passed 20mph but the rmp rises all the way up .

My car has 300000 miles.
My car has an automatic transmission.

Car is hard to shift Inspection $79.99 - $89.99 Get a Quote

If engine speed is steadily increasing but the car is not travelling faster, there is something amiss with the transmission. Perhaps the transmission is not shifting out of the low gears. The recommended service to get the underlying fault pinpointed is a transmission shift diagnostic. If you request that service, the responding certified mechanic will get this issue diagnosed, and repaired as needed, right at your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

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

What others are asking

What are the signs and symptoms of a leaking rack and pinion?

Motor vehicle safety inspections in almost all U.S. jurisdictions do not cover maintenance and ordinary wear and tear, including de minimus "leaks", unless the "defect" found creates an immediate, obvious, and direct impact on the safety of the vehicle or...

Transmission in and out of overdrive

Hi and thanks for your question. The cruise control is set with the engine speed and transmission gear selection. Check the fuse to the cruise control to see if it is blown. There could be two things going on. The...

My car will start, but will not run

This may be a sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled by the...

Where is the location of the cabin air filter on a 2002 F-250 P/U, 2-wheel drive, Diesel 7.3?

For some reason Ford used three different evaporator case designs in the trucks this year. The filter will be in one of these three locations. Look behind the glove box and there is a cover on case and filter is...

2006 cadillac cts does it have struts or shocks

Hi there. The 2006 Cadillac CTS has a front shock / strut assembly as opposed to the singular strut with coil over spring option that is common with passenger cars and some smaller SUV’s. I would recommend having this service...

I have a trouble code P0622: Generator Filed Terminal Circuit and my battery light is on.

The generator is the same thing as the alternator. If you are running through batteries, then it's likely that the amount of voltage from the alternator is too much for the battery to take. The other factor may be that...

Popping noise when I turn my 1999 ford expedition

This sounds like you may have wheel bearings that are going out. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface of the rollers...

White smoke coming from left side of engine. Lost a lot of coolant

The smoke is from the coolant leak when it hits a hot exhaust manifold. The leak may be from the thermostat housing. You should have the cooling system pressure tested to verify the leak in the system at the thermostat...

I believe my serpentine belt is split, do I need to replace my alternator if it won't crank?

If your serpentine drive belt broke or is damaged then you will need to find out if one or of your accessories are seized or damaged. If engine does not turn over then you may have a dead battery from...

Related articles

The Best Used Cars to Buy If You Have 3 or More Kids
If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Realistically, though, having kids means music lessons, athletics,...
The Best Used Cars to Buy for Families
If If it’s time for you to search for the top used cars specifically for families, check out the list we’ve put together of the top five. The list of must-haves Typical items that families are looking for in their...
The Best Used Cars to Buy If You Just Had a Baby
Having Having a baby will completely change your life. Your activities and hobbies will change. Your sleeping patterns will change. Chances are good that you’ll also be looking for a change in vehicles. You need to ensure that your car...