Skip the auto shop - Our mechanics make house calls

Q: Was told I needed to replace the catalyst converter, now car won't start at all help? ??

asked by on

We had it towed to a guy that did work on it before for us with the new catalyst converter in box brand new. He said he cut into the pipe in front of the catalyst converter an it was still making the pipe red hot... Next thing I know the car won't start so they replaced the starter, an spark plugs. The car still won't start they have had it over a week so I said at this point I'm done bring it back. Supposed to be towed back today... anyone have any ideas on what to do next? ??
My car has 150000 miles.
My car has an automatic transmission.

The engine may be having an issue with the crankshaft sensor and crankshaft damper. The sensor may be the reason of the no start. The crankshaft damper is known to come apart and could damage the sensor behind it. I recommend you have your engine checked for proper spark and fuel pressure. If you lost spark then the crank sensor may be the cause. If you lost fuel pressure then the fuel pump and filter may be bad. The reason the pipes turn red hot is because of two possible things that can cause it. The catalyst converter is clogged or the engine is getting too much fuel and what the engine cannot burn ignites in the exhaust and turns the pipe red hot. The exhaust can be checked by disconnecting the pipe and see if the engine starts. The fuel pressure too high can cause the excessive fuel in engine. The best recommendation is to have a certified mechanic like one from YourMechanic come and diagnose why your car will not start.

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
  • Home
  • Questions
  • Was told I needed to replace the catalyst converter, now car won't start at all help? ??

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: got in accident, car wont start

Hi Sam. Usually when you turn the key and nothing happens, the issue is caused by either a damaged ignition cylinder or ignition relay. However, since the vehicle was hit, it's possible that an electrical wire or connection is faulty...

Q: car will not start , without jump

If you replaced all those parts and the engine still will not turn over without a jump start then you may have a bad connection or cable. Look for breaks in the wires where corrosion got into the cable and...

Q: Only have reverse

Hello, This kind of reaction is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...