I posted a while ago about a problem i had. my car would stall while idling some times. i thought it might be the spark plugs, so i changed those. unfortunately the problem happened again, then got worse as one time when it happened i could not start the car again, and when i did get it running, it wouldn't idle.
I then thought it must be the DI, having heard so many horror stories, and my car having over 80K miles on it. I replaced that, but yesterday the same thing happened again, only this time, in addition to being very hard to start, and not being able to idle, while i was pulling onto the highway (the symtoms occured at a rest stop) the car began to lurch quite badly, and it definatly felt like the engine was misfiring. shortly after the Check Engine Light came on.
I figured it wasn't the spark that was causing the problem, so it was probably the fuel (maybe dirty injectors?). so i went to the closest gas station that was open and poured in a bottle of STP fuel injector cleaner (the only kind they had... i'm not sure how good it is).
i drove it home like that, and it seemed to be running fine. when i got home i took her out for a little spin just to keep the gas moving, and before i got back the CEL had gone away, so i didn't even get to check which fault had occured, but i assume it was at least one cylinder misfire. my only worry is that the car seems to run great until it experiences these problems, so i'm not sure if i've fixed it, or if it's just gone into hiding again.
can anyone confirm my diagnosis? any suggestions? i'm thinking of replacing the fuel filter, and the thought of replacing the injectors has crossed my mind.
I then thought it must be the DI, having heard so many horror stories, and my car having over 80K miles on it. I replaced that, but yesterday the same thing happened again, only this time, in addition to being very hard to start, and not being able to idle, while i was pulling onto the highway (the symtoms occured at a rest stop) the car began to lurch quite badly, and it definatly felt like the engine was misfiring. shortly after the Check Engine Light came on.
I figured it wasn't the spark that was causing the problem, so it was probably the fuel (maybe dirty injectors?). so i went to the closest gas station that was open and poured in a bottle of STP fuel injector cleaner (the only kind they had... i'm not sure how good it is).
i drove it home like that, and it seemed to be running fine. when i got home i took her out for a little spin just to keep the gas moving, and before i got back the CEL had gone away, so i didn't even get to check which fault had occured, but i assume it was at least one cylinder misfire. my only worry is that the car seems to run great until it experiences these problems, so i'm not sure if i've fixed it, or if it's just gone into hiding again.
can anyone confirm my diagnosis? any suggestions? i'm thinking of replacing the fuel filter, and the thought of replacing the injectors has crossed my mind.