Stalls when stopped at a light
Do you have more information? Such as, does it do this every single time you are stopped? Does it ever happen when you aren't quite at a complete stop? How soon does it stall after stopping at the light (right when it's completely stopped? As you apply the gas to move again?)?
Mainly a vehicle will stall do to a problem relating to the fuel/air system. Specifying any 'special conditions' (very hot, very cold, etc.) when the stalling seems to be more prone to happening (if any) will help with a diagnosis.
It could possibly be a bad/faulty fuel pump, where the engine isn't getting the proper flow of gas (in a case like yours, it would most likely be an intermittent flow).
Also, a faulty throttle positioning sensor (TPS) could be the problem. These are a somewhat 'run of the mill' problem in vehicles in general and aren't overly expensive to replace. This is even more likely the problem if your vehicle stalls when you are taking off from the stop light. This isn't difficult to test yourself and there was plenty of directions to do so online and elsewhere.
A vacuum leak is another possibility. Another symptom of this can be a high idle (higher than usual for your vehicle at least).
Lastly, I wouldn't imagine this to be very common but it's worth a look, and i only mention it because it was the problem with my '87 Celebrity that suddenly stalled at a stop light, then kept stalling whenever i pressed the gas to move. The car had a known engine oil leak, one area of which it effected being the air filter housing (old-fashioned circular one). I noticed, once i finally got moving (albeit only for a short time before stalling again) it sounded as though the engine wasn't getting enough air. Even though i had just recently replaced the air filter, i checked it and found it was completely covered with dirty engine oil. I took out the dirty air filter and it solved it. It just hadn't been letting enough air through. So, simple solution though not commonly the case. No harm in checking anyways.
Apr 02, 2013 |
1997 Dodge Ram 1500 Club Cab