Contour Enthusiasts Group Archives Forums General Troubleshooting Random bogging...IMRC?? Fuel Filter?? IAC??

Ok, my friend and I went out to the local Solo II event and ran the SVT. We finished 1st and 3rd (it was my first time), but we both noticed a serious problem: when we braked around the turn around and punched it in first out of the turn, the engine would bog. It did the same in the high rpms of 2nd. It was fine in 3rd-5th (when I ran it later), but for some reason it just wouldn't respond. I refueled and didn't have a problem until today, but it's not as severe now. I'm thinking it's a fuel filter issue, but I want to get a more expert opinion. I also *still* have an issue with moosing. I currently have an IAC valve soaking in carb cleaner in a coffee cup on my desk even though a "certified mechanic" just told me it's a "quick fix and won't last a week". Anyone ever hear that about IAC cleaning? Thanks!

Oh yea, and I replaced the plug wires with the 9mm Ford Motorsport ones BAT sells right around the time this started happening!

Classic fuel pump failure.

I am having the same problem too. What i am doing is replacing my plug wires, fuel filter, and fuel pump. One of those three might help you.

From my understanding the moose will lose you power when it's there.
Try to see if you have the bog at the same time it's moosing.
My suggestion is to replace the IAC with the one your cleaning then try again.
Do the fuel filter anyway as it's a cheap part.

Hmm, I'm having this same problem I do believe. By "bog" I am assuming you mean that it stutters and loses power? My car is doing this in the low RPM's (up to about 4000, secondaries obviously) every so often. I also have a Proflow MAF with both banks throwing CEL codes of running lean. Do you guys think this could be the fuel pump (obvious answer) or is it in the tuning and calibration of my Proflow?

KKM Intake, Ford Racing 9mm wires as well, replaced PCV and fuel filter, and cleaned the IAC already. Custom 2.5 catback exhaust.

Maybe clean the Throttle body as well?

Car has 68k on it

AH yes, I have a superchip, but it was installed before I got the car, so I am thinking maybe it needs to be recalibrated ? Ya, I've reset the PCM many, many times throughout installing these mods and some speakers, fixing power windows, and such. The CEL just comes back after about 30 mins of driving or so. I'm just trying to avoid paying the 100 bux it costs to get my proflow recalibrated

Classic Fuel strainer clogging more than likely. I would;

A. Remove the fuel pump
B. Clean BOTH strainers with dish soap, water, and an old toothbrush.
C. Make sure no deposits are on the floor of the fuel tank.
D. Reinstall fuel pump.
E.-MOST IMPORTANT- Replace the fuel sending unit's gasket. If you don't your car will continue to bog down. TRUST ME, I learned the hard way. YOU MUST REPLACE THIS AND the fuel cap. THE FUEL CAP IS OPTIONAL, but if you want to be sure.. they only cost like $5. I am saying this because otherwise the fuel tank will not reach the proper pressure and you may get a MIL. Or even worse no MIL and the PCM goes into "SAFE MODE".
F. After all this, reset the KAM and drive for 5-15 miles for the KAM to re-learn it's new settings.
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IMPORTANT
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MOST CASES OF SO CALLED "FUEL PUMP FAILURE" ON OUR CARS ESPECIALLY ARE NOT AS BAD AS PERCIEVED.
-Save yourself $200+ dollars and clean both fuel strainers and all sending unit components EXCEPT THE FUEL PUMP.

PLEASE DON'T ALLOW THE STEALERSHIP TO TAKE ADVANTAGE OF YOU!!
I estimate that there is a 90% chance that this will solve your fuel pump problems.

G. Replace your fuel filter.

DONE