90mm Lightning MAF

Go to #7 on the surging idle checklist.
I'm tracking with that checklist.

I can't duplicate the issue, essentially a 5-8 second limp mode where the car stutters during acceleration and pops. I'm narrowing it down to the MAF.
 
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That sounds like it’s time to clean the connectors and use dielectric grease on them. Then see if you can recreate a problem by wiggling wires.
How have you decided this is the MAF instead of the TPS or ten pin connector or PIP?
 
That sounds like it’s time to clean the connectors and use dielectric grease on them. Then see if you can recreate a problem by wiggling wires.
How have you decided this is the MAF instead of the TPS or ten pin connector or PIP?
I've already cleaned the salt and pepper connectors and applied dialectic grease. The car was tuned so that addresses the TPS. I've cleaned the MAF in the past and have run through all the typical "tune-up" stuff.

There are no clear cut clues due to weather, immediately after fuel full up, surging, etc, but I do think it's sensor related due to the popping, hesitation and then it goes away. Almost O2 sensor like, but I've swapped those out.
 
My tuner swears the '99-'04 Lightning's 90mm MAF sensor is the best one for tuned vehicles. Other than Ebay, is there any legit place to find one? Buyer beware is the phrase of the day with that site. Thanks

Sorry I didn't see this sooner. The Lightning MAFs have been used quite a bit, and if that's what your tuner prefers to use, then that is what you should probably get. The reason a lot of tuners prefer the Lightning MAF is because they are sloppy, and easier to tune with. It's a factory meter that just kind of gets the air flow in the ballpark. If the car runs good with the Lightning MAF, don't mess with it. The Pro-M and PMAS meters are definitely better meters though. A good tuner that is trying to squeeze every last bit out of the engine is going to insist on a higher quality meter though.

Kurt
 
Sorry I didn't see this sooner. The Lightning MAFs have been used quite a bit, and if that's what your tuner prefers to use, then that is what you should probably get. The reason a lot of tuners prefer the Lightning MAF is because they are sloppy, and easier to tune with. It's a factory meter that just kind of gets the air flow in the ballpark. If the car runs good with the Lightning MAF, don't mess with it. The Pro-M and PMAS meters are definitely better meters though. A good tuner that is trying to squeeze every last bit out of the engine is going to insist on a higher quality meter though.

Kurt
Good stuff. Thanks
 
So after reading the entire thread… what was the consensus? The reason I ask is because my mechanic “advisor” has purchased me a 90mm MAF and I’m really curious what size TB I need and where to relocate the IAT sensor…
 

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The size of your throttle body is completely dependent on your engine combination. My current setup is TF H/C/I and I run a Accufab 75mm which is perfect. I'm planning a Ford Racing Z2363 crate engine swap within the next year and will be going with a 90mm Accufab throttle body.