Q: Q: Won't start

asked by on

I've replaced all the sensors, I've redid the wire harness. Good compression, spark, fuel pressure, injectors good, plugs good. No codes on the dash. Only thing is when I turn key on not start just on the temp reads hot and cel is on. It cranks but will not start. It backfires through the air intake. I've not replaced ect sensor, it's this my problem. I am at a loss. Also I'm getting quad driver errors

My car has 187000 miles.
My car has an automatic transmission.

Hi there. Assuming, the engine is mechanically sound. The part of the description you provided that concerns me is, the quad driver errors. The quad drivers are integral of the ECM (engine control module)/computer and control fuel injector operation. Assuming, the wire harness is not damaged, the ECM has internally failed. Diagnostic steps should be performed to confirm the failure. Replacing components without diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle’s no start be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Q: Won't start

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: my antenna motor will not shut off... just hums and thumps. How do I unplug it? 1998 Oldsmobile 88

Hi there. The antenna motor is operated by a fuse, which could be removed from the fuse box to disable the motor. There should be a diagram of fuses in your owner manual to let you know which one powers...

Q: Car won't start I can hear it trying to crank. I've just replaced the alternator and battery it just won't turn over...

This suggests that the motor have run out of oil. When the oil pressure gauge reads zero, this means that there is not enough oil pressure inside the motor to properly lubricate engine components properly. When this happens, you may...

Q: i can't get one bolt to go in my 1998 olds achieve water pump

Possible causes of this issue include use of a non-OEM pump where the bolt holes don't line up, use of the wrong bolt, a bolt that has damaged threads, or the internal threads (in the head or block) are damaged....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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...