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Hi all,
I'm on my second EP and this one's fuel economy is really quite poor compared to my '51 model. I used to get ~320 Mi out of a tank, the current one (premier edition w/air-con) I'm getting 260-280. This feels like a HUGE difference.
I have a few tools at my disposal and have checked a few things out but since I don't know what the values for several of the sensors _should_ be it's hard to tell.
The car is in negative fuel trim (running rich), combined short and long term taking it to about -12 to -14%.
Engine temps seem to be well managed, air temp sensor seems to work fine.
MAP reads 14.5psi when the engine isn't running (which seems right for my altitude), and this drops when it is, so it's not stuck on some fixed value, it could be out but I'm not sure what it should be (and it looks to be a relatively expensive part to replace, unless you have something like a k100 and can use a non-standard part).
What values should the O2 sensors be at? I've read conflicting values about their range (one of mine seems to be between 0 and 1.28v, the other between 0 and 1v). How close should their values be together?
What else should I be looking at, what other information can I provide to help people?
Thanks all, looking forward to a solution!
I'm on my second EP and this one's fuel economy is really quite poor compared to my '51 model. I used to get ~320 Mi out of a tank, the current one (premier edition w/air-con) I'm getting 260-280. This feels like a HUGE difference.
I have a few tools at my disposal and have checked a few things out but since I don't know what the values for several of the sensors _should_ be it's hard to tell.
The car is in negative fuel trim (running rich), combined short and long term taking it to about -12 to -14%.
Engine temps seem to be well managed, air temp sensor seems to work fine.
MAP reads 14.5psi when the engine isn't running (which seems right for my altitude), and this drops when it is, so it's not stuck on some fixed value, it could be out but I'm not sure what it should be (and it looks to be a relatively expensive part to replace, unless you have something like a k100 and can use a non-standard part).
What values should the O2 sensors be at? I've read conflicting values about their range (one of mine seems to be between 0 and 1.28v, the other between 0 and 1v). How close should their values be together?
What else should I be looking at, what other information can I provide to help people?
Thanks all, looking forward to a solution!