Strange...Engine stumbling when cold..
#1
Strange...Engine stumbling when cold..
but not when it's hot. This is perplexing me. I can feel what seems like an ignition miss under load from startup until the car is fully warm, and then it goes away. Sometimes it doesn't do it at all. It happens under all loads, and started after I replaced the coil(bad coil) and cleaned/re-oiled my air filter. I thought it was oil on the MAF, so I've cleaned it a few times. The first couple of times it seemed to fix the problem, but now it doesn't seem to have any effect. I'm leaning towards the OPTI now, as it is the original with 151,000 miles on it. I really can't think of what else could cause this. Any ideas?
#4
How did you figure that? That isn't even a logical possibility. Do any of you have access to a scanner/laptop/etc.? You need to see what the sensors are doing. Is the misfire going away when the car goes into closed loop?
#6
#7
My guess would be something to do with the cold. I recently replaced almost all ignition parts including opti, and it was running fine for a while until the cold really started coming in. Stumbles anytime I accelerate but stops when it warms up. If I let the car sit for a little before driving, it doesn't happen at all.
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