> > wrote in message ...
>> On Sun, 23 Dec 2007 02:06:13 GMT, "Neil" > wrote:
>>
>>>I have 2003 Dodge Caravan SE, which takes E85 (has the E85 sticker on the
>>>gas cap door), but I've never used it before. The other day my tank was
>>>half
>>>full, and I filled it up with E85. A couple dozen miles later my check
>>>engine light went on. It stayed on for a couple of days. Today the check
>>>engine light didn't go on; but it's also much colder today than it's been
>>>the past couple of days, so I don't know if that has anything to do with
>>>it.
>>>
>> Get the code retrieved (OBD11) and report back here. This has got me
>> very curious. Just because the lites off, the code will still be
>> stored.
>>
>> Pete

"Refinish King" > wrote in message
news:%Nkbj.625$ML6.193@trndny04...
>I can also help:
>
> Most likely the fuel sensor in the fuel line. But that's just a guess. The
> computer sends a richer mix on E-85, because Ethanol does not have the
> BTU's nor the flame propagation of gasoline.
>

I know the owner's manual says that the check engine light might come on
when you use cheaper gasoline. So that might be the same thing. However, the
check engine light's going to come on whenever I use E85, then the car's not
really made for using E85, is it?