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1,265 Posts
About a month ago, my check engine light came on. The first thing I did was check the gas cap and, sure enough, it was loose. I tightened it and the light went away after a few cycles. Here in New Jersey, it's against the law to pump our own gas, so a careless attendent was at fault.
A couple weeks later, the check engine light came back on. Nuts! I figured there must be something wrong with my gas cap not sealing properly, made an appointment, and waited for them to complete a quick repair. Nearly 3 hours later, I got my car back with a new ignition coil #7 and a couple of spark plugs replaced. Apparently, the gas cap incident was coincidental.
The car felt better and had more power. Cool. But a day later, the check engine light came back on. Using the trick I learned here about turnign the key 3 times between run and accessory, I was able to read the code. It was a P2320, exactly the same code that the dealer pulled before swapping the coil and plugs. I brought the car back the next day. After having the car all day, they decided I needed some new control module and gave me back the car while we waited for the parts to arrive. They expect them in the middle of next week. They claim there must be a "short" in the ECU.
It seems to me that they are simply throwing parts at the problem in the hopes it will keep the check engine light off. If it's not the coil, then it must be the ECU. I dont' have much faith in this, especially since the coil replacement did improve the engine's power and response. I can't believe an ECU short would just happen to cause a P2320 the day after a replacement of a defective ignition coil #7.
I don't beleive in coincidences, which is why I also mentioned the gas cap incident. Does anyone have any similar experiences or ideas as to what the problem may be?
To throw another wrench into this, the check engine light was cleared at the dealer. It's been two days since then and I've driven the car pretty hard. The light has not come back on. I hate intermittant problems!
A couple weeks later, the check engine light came back on. Nuts! I figured there must be something wrong with my gas cap not sealing properly, made an appointment, and waited for them to complete a quick repair. Nearly 3 hours later, I got my car back with a new ignition coil #7 and a couple of spark plugs replaced. Apparently, the gas cap incident was coincidental.
The car felt better and had more power. Cool. But a day later, the check engine light came back on. Using the trick I learned here about turnign the key 3 times between run and accessory, I was able to read the code. It was a P2320, exactly the same code that the dealer pulled before swapping the coil and plugs. I brought the car back the next day. After having the car all day, they decided I needed some new control module and gave me back the car while we waited for the parts to arrive. They expect them in the middle of next week. They claim there must be a "short" in the ECU.
It seems to me that they are simply throwing parts at the problem in the hopes it will keep the check engine light off. If it's not the coil, then it must be the ECU. I dont' have much faith in this, especially since the coil replacement did improve the engine's power and response. I can't believe an ECU short would just happen to cause a P2320 the day after a replacement of a defective ignition coil #7.
I don't beleive in coincidences, which is why I also mentioned the gas cap incident. Does anyone have any similar experiences or ideas as to what the problem may be?
To throw another wrench into this, the check engine light was cleared at the dealer. It's been two days since then and I've driven the car pretty hard. The light has not come back on. I hate intermittant problems!
