Skip the auto shop - Our mechanics make house calls

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.

A: Hi there. Assuming, the engine is mechanica...

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 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

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Will any of the auto discount stores check the fuel cap? I am getting a P0440 code & have replaced the vent & purge solenoids

Auto part stores will not have the proper equipment to check the fuel cap. Your best bet is to find a local repair shop that does state inspections. Checking the gas cap is part of a state inspection and they...

Q: ABS light is on

There could be several reasons as to why your ABS light is on in your Jeep Wrangler. One of the most common reasons is due to a faulty wheel speed sensor. Without additional information however, it may be time to...

Q: Power doorlocks not working

I can imagine how frustrating it can be to have all of your power door locks suddenly stop working on your Oldsmobile. Now if you are trying to utilize the door locks and all four doors are failing to lock...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control 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...
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...