Q: I'm wondering what would cause my car not to stay when it is warm , I'm changing all pre and post cat sensors today. No power also

asked by on

Hello I'm having problems with my car, it has a lack of power, also will not start once it has reached normal temps, does not overheat. I've change all gaskets so they're are no vacuum leaks, my old reader tells me I'm lean in bank one and bank 2,idk what it could be, I'm changing pre and post sensors today, do you think an air box temp sensor could cause the no start warm issue? Thank you and sorry for not having proper punctuation oh and it ruins very rough until it's warm, then it kinda drives but feel very slow,

My car has 163000 miles.
My car has an automatic transmission.

Hello there, a variety of faults can cause your 1996 BMW 740iL to not start when cold and run rough. Without knowing the exact code I can only give general advice. A lean condition can be caused by many faults such as low fuel pressure, failing fuel injector, a vacuum leak, oxygen sensors, or exhaust leaks. Before more parts are replaced this vehicle needs diagnosed so unnecessary repairs are not performed. A qualified technician such as one from YourMechanic will be able to perform a loss of power inspection on your vehicle and make any repairs required to get your vehicle driving normally again.

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. I'm wondering what would cause my car not to stay when it is warm , I'm changing all pre and post cat sensors today. No power also

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: Click noise when I try to start my jeep

Hello, thank you for writing in. The vehicle is likely having issues with the battery cables or the ground connection. With that being said, the battery terminals and the cables both need to be clean, dry, and tight. Double check...

Q: while i am running my air conditioner my check gages light comes on and when i cut the ac off the lights go off

Hi there. In most cases, what you are describing is caused by an exposed electrical wire somewhere in the AC system or even perhaps the center console. This can cause warning lights or other indication lights come on occasionally when...

Q: Steering wheel vibration over 60 mph

Hello. This vehicle should not shake like this when driving at high speeds. If it only occurs at higher rates of speed then it either has a warped front hub assembly or it may have a problem with the alignment....

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.