Q: possible bad ecm if I reset it will that help me in finding out if its bad.

asked by on

I have 95 Chevy blazer 2wd v6 vortex I belief 4.3 l I have been having issues with it recently and I have searched hundreds of forums I believe I pin pointed the problem I think I have a bad ecm but I can afford to just go and buy one to try and see if it works my question is this if I reset the ecm by removing positive cable from battery and wait five mins and reconnect it will it help me to establish if the ecm is bad or not (ie) it start running better then fail again or nothing with happen to change it? The car is running like crap rough idle sputtering misfiring jogging down when accelerating and when . Stop after it running or driving for a little bit stalling as soon as it restarts I go to hit accelerator it stalls again! Thank you for your time and consideration

My car has 222676 miles.
My car has an automatic transmission.

Hi there. From the description you provided, it is unlikely, the ECM (electronic control module) is at fault. First and most important, when disconnecting the battery, always disconnect the negative terminal first and reconnect last. Starting with the positive terminal, there’s a chance to arc or short out your tool and/or other components (ECM, etc...). Assuming the check engine light works, the ECM should recognize the poorly running engine. Accessing the ECM may help identify the fault. If, no information can be accessed. Checking fuses would be in order. The drivability concern, sounds more like fuel delivery problem. Which, could be caused by low fuel pressure, for example bad fuel pump, plugged fuel filter. I recommend before you spend money replacing the ECM, have your vehicle diagnosed by a certified technician from YourMechanic.

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. possible bad ecm if I reset it will that help me in finding out if its bad.

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 van was missing and rough idling then I turned it off one day and the next day it starts then dies and some times it won't start

Hello, thanks for writing in about your 2001 Dodge Caravan. For certain, given your mileage and codes for these 2 components, replacing these 2 sensors is the minimum. Cleaning the idle air control valve, throttle body, and PCV valve should...

Q: High RPM in drive and slowly picks up to 50 mph

Hello. From what you describe, it would appear that you have already addressed many of the possible sources of the issue. A few other things I would check are the throttle position sensor and the fuel injectors. The throttle...

Q: 2007 nissan altima transmission non hybrid to hybrid

You cannot use a transmission from a Hybrid and put it in a non Hybrid car. They are two different types and sizes of transmissions.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...