Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light comes on after starting pickup

asked by on

On a recurring basis, the check engine light comes on when I start my pickup and it stays on for around 30 seconds. When I give the engine some gas, the check engine light goes out. When I release the throttle for about another 30 seconds, then the check engine light comes back on. I drove about 10 minutes and then stopped and let the truck idle before turning it off. After several minutes, the check engine light did not come on. There is no sputtering and no strange noises when I give the engine more gas. In addition, this is an OBD1 code and the auto parts store will not read it. What can you tell me about this problem and how to fix it?

A: Hello there, thank you for asking about you...

Hello there, thank you for asking about your 1992 Isuzu Pickup. A professional will have the correct equipment to read OBD1 codes. Retrieving the diagnostic trouble code(s) is the first place to start when diagnosing your vehicle. Increasing RPMs changes engine load, which can in turn affect many different sensors and components, causing the Check Engine Light to illuminate. The only way to narrow down the options and find the culprit is through in person diagnosis with an OEM compatible scan tool. A certified technician from YourMechanic can retrieve the OBD codes at your home or office.

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・Save up to 30%

Get a quote

What others are asking

Q: Car stuck in neutral

Hi there. There have been issues where the axle shaft breaks and the vehicle will be unmovable in any gear. The axle would have to be inspected to see if it is broken. Also, the problem could be internally in...

Q: Loss of engine power. 2007 BMW 335 xDrive

Hello. There can be several causes for a vehicle to lose power. It is possible that the crankshaft position sensor or camshaft position sensor have an intermittent problem. There could also be a problem with the mass airflow sensor being...

Q: Rough idling when the MAF is plugged in

If the problem is present when the MAF sensor is plugged in, this is a classic sign something may be going on with the MAF sensor. Many other things can cause a vehicle to idle poorly as well though. The...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.