Good call on the battery. I took the battery to an auto store for a charge and they said it wouldn't even take a charge, so I bought a new one and installed it. The car started up right away. Before driving it, I did another diagnostic check with the voltmeter and again it read everything OK (continuous short pulses). I drove the car around the neighborhood, no freeways, about 45 to 50 mph max and it ran fine - normal power, idling, shifting (automatic transmission), etc. However, after about 10 minutes it started to run rough and acceleration became very poor. When I got back home, the Check Engine light was on. I did another diagnostic check and this time I got code #41. The shop manual says that this is an injector problem - injectors don't operate for a continuous 4 seconds while engine is idling or running. It gives three probable causes:
- injection malfunction
- open circuit or short circuit in injector or connector contact is defective
- engine control unit malfunction
I checked the resistance of all 4 injectors back in October, the first time this fault code (41) registered and all 4 were fine.
Also, there's a little smoke coming from the bottom of the engine, maybe from an exhaust gasket. It may not be related to the injector problem, maybe a gasket replacement needed?
Since the car ran fine when it was cold but the loss of power happened after 10 minutes, what do you think the problem could be? Injector pressure? I haven't worked on injectors before.
Monday, January 10th, 2011 AT 10:02 AM