Car will not accelerate over 10 mph or go over 2,000 RPM's

TA.RAHMAN

MEMBER
2006 MINI COOPER S
4.1L
6 CYL
2WD
AUTOMATIC
110,000 MILES

Car has a hard time shifting by itself. Jumps at random shifts. Service engine soon light is on. ABS sensor is on. TPMS sensor is on. Battery light is on. Scanned car it pulls up the code for transmission throttle position. Car started smoking coolant falling on catalytic converter under is probable cause.

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,179 POSTS

Welcome to 2CarPros.

Wow! That's a lot to have going on. Can you provide the actual codes that were retrieved? It would help me. Many of these things could be related. For example, if the voltage supply is low, it can cause electronic issues. As far as the coolant on the converter, can you see anywhere it could be leaking from? The TPMS isn't going to cause a driveability issue. THe ABS shouldn't cause driveability issues either. I'm not sure, but anytime I have seen vehicles with that excessive amount of power loss, it always seems to be related to a restriction in the exhaust (usually a plugged catalytic converter).

Take a look through this link of symptoms related to a plugged converter.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

If you want to check if it the power loss is related to the converter, here is how to test it. It shows the converter being removed. You can simply remove the oxygen sensor before the converter and although it won't be perfect, you should be able to see a small improvement.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Let me know.

Joe