Skip the auto shop - Our mechanics make house calls

Q: trasmission

asked by on

So the truck is a 4wd and the speedometer just stoped working after we had the alternator replaced. The truck drives but seems to not be shifting past 30. When your trying to go more than 30 it won't and it's making a poping noise from under the truck. Speedometer rolling over 100 When clearly your only going 30. Check engine light is on. Also abs light. Just replaced brakes and ball bearings and rotors with stabilizer bar. Please help

My car has 178000 miles.
My car has an automatic transmission.

A: It sounds like one of the wheel sensors is ...

It sounds like one of the wheel sensors is not working properly and causing the vehicle to be in failure drive mode. You may have damaged one of the wheel speed sensors when replacing the bearings and brakes. Have the computer scanned and monitor the speed sensors to see which one is causing the problem and inspect to see if sensor or sensor wheel is damaged and needs replaced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Intermittent car vibration and shaking

Depending on the tires you have and, if they are of the run-flat type, your tires run-flat may be loose causing the vibration until it moves into a position that is balanced again. I would recommend having each tire removed...

Q: Truck makes ticking sound and idles hard

The ticking noise is more than likely a lifter tick. Sometimes you can perform an engine flush to get some of the ticking out but the only sure way is to replace the lifter. The rough idle is usually caused...

Q: Chizzling sound when start of acceleration, sound goes away after car is on the move.

Hi there. Weird sounds underneath the vehicle are often very difficult to diagnose over the internet. Typically noises in general are caused by loose or damaged components that are rattling as the vehicle is warming up. A certified technician from...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...