Q: locks up at high rpm then able to free up and run again

asked by on

I have a 2002 ford courier (ford ranger) 2.6L 4x4 ute. When i rev the engine up to roughly 4000 rpm, either in neutral or any gear, I get a loud squealing grinding noise and then the motor seizes up.. Then it will not turn over again. The starter just goes clunk once and wont start.

But, If Ithen put the car in 5th gear and rock it back and forth i can free up the engine and it will start fine and idle/drive fine until i get to high rpm and the same issue occurs..

Once the noise starts if I quickly turn the motor off it will not seize and i can start and run fine until the revs get too high and it happens again.

any ideas??

My car has 245000 miles.
My car has a manual transmission.

The problem may be the transmission pilot bearing for the transmission input shaft on the back of the crankshaft seizing up or the input shaft on the transmission seizing. If it is not the transmission, then it is the internal engine camshaft or crankshaft seizing up and rocking the engine with the transmission loosening the seized bearing. Have a mechanic listen to the noise and verify what is failing in the engine or transmission in order to diagnose the car’s starting problem.

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
  1. Home
  2. Questions
  3. locks up at high rpm then able to free up and run again

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

Q: Erratic shifting

Hello. It would appear that these 2 problems may perhaps need to be addressed separately. If these problems began after you replaced a sensor, then it may be possible that the problems are related to the repair. I would recommend...

Q: Spits and sputters in higher rpm

Hey there. You need to try and reset the point gap to .025 and then run the engine again. You should also get a spark tester and see how much power your coil is putting out. If it is not...

Q: Q: wont start

Hello there: There could be multiple issues going on with your Mazda pickup that are causing it not to start. In most cases, it's either going to be a fuel delivery issue or ignition system problem that gets in the...

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...
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...