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Question:

Why does my check engine light come on my 2002 Ford Taurus SE when I fill up with E85?

It is a 3.0l OHV flex-fuel vehicle.The dealership says its a fouled up injector but they wont show a printout of the computer reading so i cant be for sure. If there is anybody who has same problem or knows the answer I would really appreciate it!

Answer:

most dealers don't have their diagnostic computers hooked to printers. I know we have 6 testers in teh shop with only 2 hooked to printers. But how will a printout show that's it's a fuel injector to you unless you know what to expect from the printout? Usually the time it stays open is either too long or too short but usually is found by trial and error replacement with pulling it out and swapping with another injector. I've done a home brew version of opening an injector to chek for spray pattern before but that car onlly showed a miss when first started and ran perfect at every other time. Since they have to back up their diagnostics, let them change it and then get on them if their diagnostics are wrong. A lot of service writers will instead explain what is going on to cause the light if asked nice enough.
if the light only comes on when you use the e85, that tells me that the sensor that determines the fuel type is at fault or the system tied to it. go to auto zone and ask them to scan for codes, they will do it more that likely and with a greater service than the dealer.

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