025 sensor

#21 · March 15, 2019, 11:05 pm

I don't run relays. As long as your pump doesn't draw more than 15 amps, run it directly off the Orange wire.

Fitech is correct. I would get a 100psi fuel gauge so you can see what the fuel system is doing. Should stay at 58psi.

Are you running a return line? You should if not.

The system is doing its job. Something is giving it bad signals. I would still like to see a 800rpm target idle and get the IAC steps around 15.

I know you are probably losing patience, but we will get this right.

#22 · March 16, 2019, 3:13 pm

Unplug your O2 sensor and see if issue continues.

#23 · March 17, 2019, 3:06 pm

Hi Austin

Unplugging the O2 sensor was the first thing I did, right before I replaced it.

Neither made any difference.

I have put the carb back on because I need to use it full time next week.

I will revisit this when I get back from Beach Hop.

Thanks Mark

Mark johnson

#24 · March 23, 2019, 3:31 am

Hey Mark

im in the same boat... I have a fitech system on my ford 460 and is doing the exact same things

i have changed the o2 ..checked for exhaust leaks...and still no change...

how did you go have you got your problem sorted ???

Any help would be great

cheers Ben

#25 · March 25, 2019, 2:17 pm

Hi Ben

The Fitech tech help line insist it is either an exhaust leak or a fuel pressure issue.

I have just had a new exhaust system fitted from the manifold.

I haven't put the Fitech back on yet and will update in a few weeks.

Thanks ark.

Mark johnson

#26 · September 7, 2019, 1:49 pm

Did you guys have any resolution to this? I'm in the same boat right now...

#27 · September 11, 2019, 7:46 pm

i installed a 17014 o2s when mine went out

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