Skip the auto shop - Our mechanics make house calls

Q: My car won't start after replacing transmission

asked by on

I changed transmission now my car won't start. It turns over but won't start. I changed spark plugs, checked sensors... What should I do?

My car has 238107 miles.
My car has an automatic transmission.

A: It will be hard to tell if a Check Engine L...

It will be hard to tell if a Check Engine Light code has popped up since the car won't run, but you can still hook up a code reader to see if there are any faults. Any codes present may lead you to the problem. It could be a sensor (camshaft, crankshaft, oxygen, or mass air flow), a pinched wire, a broken fuse, or just a bad ground to give you a few possibilities. Consider returning to the facility that replaced your transmission; or if you did the work on your own, have a certified technician, like one from YourMechanic, come to your car's location to diagnose the starting issue and pinpoint the needed repairs.

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

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: Check Engine light on after car won't start

If the car is struggling to start, the battery and starting system need to be checked. A weak battery will not turn the engine over fast enough. Also, there will not be enough power for the fuel pump and ignition....

Q: Misfire - 2002 Mitsubishi Eclipse

Hey there. These two codes are most likely related as an intake air leak can cause a misfire due to the lean fuel condition it creates. When there are no intake air leaks present, your car runs smoothly based upon...

Q: Key is stuck in the ignition and won't turn all the way back into the lock position

It is either the ignition switch electrical or the ignition lock cylinder. The key slides into the ignition lock cylinder. These two components mate together and essentially become one. So if either of them break, they will both be affected....

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...