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?
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. 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: When engine warms up and goes in reverse, it shuts off

Hello there. This is a bit of a rare issue on the 1990 Chevrolet K2500. There are a few possible causes that come to mind with the issues going into reverse. The most common would be a shift solenoid, torque...

Q: I have a 1997 dodge ram 1500. It is not getting up to speed and acts like it has no power.

Hi there. Check the fuel pressure on the fuel rail and see if there is at least 30 psi. If the fuel pressure is low, then either the fuel filter is plugged or the fuel pump is not producing enough...

Q: Valve manifold is stuck

Hi there. The only thing that you can do is remove the upper intake manifold runner control and replace it with a good used one or a new one. If you need further assistance removing the intake manifold runner control,...

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...
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...