Skip the auto shop - Our mechanics make house calls

Q: Fuel issues - 1999 Chevrolet Venture

asked by on

My van is running fine when idling but when I go to take off it acts like its missing. During the day when it's hot outside it run perfect but when it's cool out at night is acts up. I did find that once the van warms up it runs better. There is no check engine light (as of right now) and I have changed out the fuel filter.

My car has 289000 miles.
My car has an automatic transmission.

Hi there. You may have a misfiring plug or plug wire that has not caused the Check Engine Light to come on yet, but may have stored a code. Have the computer scanned first. You may just have a carbon build up on the valves and injectors and will need to have them cleaned out using GM approved cleaners. Carbon build up on the valves will cause the engine to run rough cold and then run okay as it warms up. If you need to have this checked, a certified professional, like one from YourMechanic, can come to your car’s location to inspect the misfiring symptom and address the issue.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: My car shows a misfire on cylinder 2

Engine misfires can be caused by a list of problems, but there are a few suspects that occur more than others. Generally, misfires are caused by either a spark or fuel issue or in cases, a combination of both. Spark-related...

Q: i had a new water pump put on this past summer but then the power steering went out.

Driving with no power steering will not cause the engine to overheat alone. However, if the power steering pump has failed and is restricted from free wheeling, it is possible that this can break the serpentine belt. If the serpentine...

Q: Why does my vehicle consume so much fuel?

This may be a result of a faulty oxygen sensor. As you may know the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in...

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...