Skip the auto shop - Our mechanics make house calls

Q: EVAP 1

asked by on

The computer told me it was EVAP 1 I replaced the EVAP 1 and the computer still says EVAP 1 is bad and I replaced the back end EVAP also but I didn't replaced the gas cap do you think that could be the reason for the engine light being on and the truck is riding hard also that's way I said I was going to replaced the ECU or the ECM

The code you are getting will have a pinpoint test to follow like directions to follow. Depending on the code you received will depend on the parts involved. I would recommend writing down the code, disconnecting the battery, and then disconnecting the ECM connections. You should then add some dielectric lube to the connector and pins lightly. Once that is done, reinstall the connections.

If the problem returns then have the code pinpoint tested to isolate the fault. The ECM is most likely not the faulty part. It may just be connections issues at the ECM or a component. You can try getting a new gas cap since it is an inexpensive possible problem. If you’d like to get this fixed, have one of our mobile experts diagnose your Check Engine Light first person and make the necessary repairs.

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

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: Truck won't start mechanic said it was the alarm first then jumped to the engine control computer

Hi, thanks for writing in. I would recommend informing the technician who serviced your vehicle that the vehicle started just fine before the transmission was serviced and that any issues that occurred afterwards would most likely be due to his...

Q: Follow up to my last question. 2009 vette. Flashing engine light. What is the most I looking to have to spend on it.

A flashing check engine light usually signifies cylinder misfiring. The recommended service to identify the cause is a misfiring diagnostic. To answer your question, the most you would have to spend on a misfiring diagnostic is $80. The cost of...

Q: Brake line leaking

Brake lines can not be repaired. Replacing the entire line is the only safe repair. After one line starts to leak, all the others will need to be closely inspected. If it is a rear line, the two lines for...

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...
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...
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.