Skip the auto shop - Our mechanics make house calls

Q: When carrying a load, van rough idles and loses power - 2001 GMC Savana 3500

asked by on

There is a low and rough idle in my van and when carrying a load, the van dies and loses power. There are no codes to report. The following have already been replaced, but have not helped the problem: plugs, spark plugs wires, fuel pump, fuel filter, rotor, cap, TPS sensor, idle air control sensor, EGR valve, air filter, and MAF sensor. Why have these replacements not fixed the low/rough idle and loss of power in my van?

Hello. There may be an issue with your fuel injectors. If the fuel injectors are clogged, this will not usually throw a Check Engine Light code but will prevent the engine from running properly. If a fuel filter becomes overfilled with debris, some of the debris may make it through the fuel filter and may therefore clog the fuel injectors. I would recommend trying to replace the fuel injectors. I would strongly recommend having this service performed by a professional, as some powertrain control module programming may be required after replacing the fuel injectors.

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!
  1. Home
  2. Questions
  3. When carrying a load, van rough idles and loses power - 2001 GMC Savana 3500

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.

Since the fuel pump was replaced, check to see if there is fuel pressure to the fuel injectors. If there is good fuel pressure, then check for spark on the spark plugs. You will have to put on a spark...

Q: 99 GMC savanna 3500 where is the ac expansion valve

Hi there. This video should show you where the rear expansion valve is located for a 99 GMC Savana or Chevy Suburban. You might want to purchase a service and repair manual for your vehicle for the right repair steps...

Q: When idling, car overheats and A/C blows hot air - 2001 Saturn L100

Hello. The most likely cause of the issue that your are having would be a faulty cooling fan. The cooling fans purpose is to keep the radiator and condenser for the air conditioning cool during the idling function of the...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...