Have any of you using the Pro-M 80 mm MAF experienced any problems? Let me be more specific:

--Truck runs fine except at idle.
--While at idle, it surges from 1500 rpm to just about dying (and it will die on occasion).
--It also sets off my "check engine" light

My truck was doing the above, so I thought my chip (Swanson) may have come loose. It was sputtering at idle and the check engine light came on. So, I "reset" the computer and removed the chip completely.
Well, while in stop and go traffic afterwards, my truck started acting up again, and actually died in traffic. It started right back up, but the check engine light is back, as is the surging.

I have no other mods to the truck (performance-wise), so I can only assume it is the Pro-M. After I got home, I unplugged the wires going to the MAF while the truck was running, and the surge seemed to go away. I then plugged it back up and the truck surged a couple of times and died. It starts fine.

Any help would be appreciated. I am going to take it to Ford tomorrow and see what the code is causing the check engine light to come on.

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Black '00, Pro-M, Swanson Flip Chip, AIM 2" drop kit, JL Ram Air on order

 

have you tried it with the stock mass air? becareful when you take to dealer,most likely they will say pro-m for sure! i think i would erase the codes and put the stock mass air on and see how it works.if problem is fixed well you know...hope this helps JL

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93 cobra 10.90@127.00
99 lightning (black)
e.t. 12.41 @ 110.8
best mph 110.8
60 ft. 1.79
superchiped
johnnylightning ram air
Level 10 shift kit
SuperChip Dealer!
(Man i love this truck!)
_________________________
JohnnyLightning Performance
E-mail: jlightningracing@cs.com
WEB:webtechnik.com/johnnylightning

 

Thanks JL! You must have been reading my mind. I have a pretty good friend at the Ford dealership here. However, I do not have my stock setup as there is a performance place here in Little Rock using my airbox for their R&D work for an aftermarket air intake kit.

I am just worried if there IS a problem with the Pro-M, getting it replaced will be a headache...

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Black '00, Pro-M, Swanson Flip Chip, AIM 2" drop kit, JL Ram Air on order

 

Your problem is you have a pro-m problem i had the same thing happen to me as you described in your post i sent it back for a another one within a week and the one they sent me worked fine with no problems at all!
Once you get the pro-m to work good luck trying to find a chip that won't detonate in cool weather.The pro-m is very inconsistant from one to another!Some lean out much more than others making it difficult for technicians to zero in on the correct air-fuel ratio.
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HIGH ROLLER
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I just got my money back from a local speed shop because the mass air meter/filter was doing the same thing ,it made my truck idle rough .I went through two of them .It was from Best Products .They had a group buy on these a couple months ago, from Noel.I don't think they had any problems.

Jim

 

Thanks for the help, guys. I just hope Best Products is easy to deal with.

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Black '00, Pro-M, Swanson Flip Chip, AIM 2" drop kit, JL Ram Air on order

 

I sold about 35. A few with chips had to send them back for pinging. I have an old superchip flipchip with track and street that was set up for the PRO-M. Mine runs great and has never pinged. My idle fluxs a little bit but it did that before the pro-m was installed. Runs like a screamin bullet.
8.19 in the 1/8. Did you soder your wire extensions for the temp sensor?
noelvm

 

Noel,

No, I did not. They were "tied" together and bound in a rubber sleave. The shop where I had it dynoed did it for me. The truck runs awesome from off idle to redline. Would the temp sensor cause this type of problem?

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Black '00, Pro-M, Swanson Flip Chip, AIM 2" drop kit, JL Ram Air on order

 

It's possible. Unsodered wires will shake and corrode and can cause a bad connection. I highly recommend you separate, clean and soder the wires. This is no place for a bad connection. Ever have a jerry rigged stereo system in your car that cracked and popped everytime you went over a bump. This is no place for a weak connection.
noelvm

 

Had the exact same problems, the check engine light is for a lean code. Sent mine back to swanson's about 3 months ago for recalibrating and still have not recieved it back. Looks like I will never see it or my money again.

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99 red lightning, bassani complete system #1610 of 4000
2001 arctic cat zr440 snopro on the way
2000 super duty v10
Arctic cat 400 4x4
Cobra "R" #131 of 300
Moderator
www.svtperformance.com

 

Swanson is not a PRO-M direct dealer. They get their units from a middle man. Houston Performance is a direct dealer and he stocks the units that fit the Lightning. If one is bad and we had none that were, he will replace it out of his stock.
noelvm

 

That is where I got mine, Houston Performance. I then got a chip from Danny Swanson. It is weird, as it just now started happening. I have had this setup for approx 6 months with no problems. The truck did start pinging at 4500 RPM and up since it got cold (last month or so), but this is happening at idle and NO chip. I had no pinging when it was warmer.

I wonder if I put in octane booster, the problem would "go away"? Any takers???

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Black '00, Pro-M, Swanson Flip Chip, AIM 2" drop kit, JL Ram Air on order

 

it might just be winter gas if you have not had this problem until recently. i got my pro m from houston motorsports and my chip from swanson performance and have never had pinging,surging or any other problems but i don't drive the L in the winter and i soldered my connections. i have driven in thirty degree temps but never got on it much as the roads are slick.12.926 107.74

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00 black team swanson

 

Maybe its my ignorance but i do not understand why people would get a pro m with a chip.

If you get a "good" chip,You can achieve the same performance without a pro-m. Iknow its one of those things alot of people do on other cars but i cannot se why on a lightning when a chip does soo much and then you need to specially tune the pro-m to detune it.Kind of like going backwards to get the same effect as the chip alone maybe with a little more performance not hardly worth the cost or aggrevation.

These things are not cheap either.

These are the resaons I went with a chip/filter combo only.same performance -$350!!

 

I agree with lightningquick!
Why would you want to run your chip rich with less timing because the Pro-M will run it lean. Sort of redundant.
From what I uderstand from Ford the 80mm Factory Mass Air unit does much more then Just sample air. If calibrated WRONG can burn up the clutch packs in the transmission, for one thing, let along cause a multitude of problems in the PCM sampling.
Maybe that's why Sal took his off and ran .2 tenths quicker!!!
Nah!! I'll stay with just a chip and filter, I want my trans to last.

Dan

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99.5 Vermillian Red SVT Born on date:
8/24/99 # 2094
N.L.O.C # 461
PSP MODS.
A.R.E II w/wing
Best Time:
12.77 @ 105.80mph(SO FAR)
1.80 60ft
8.15 @ 85.55 mph 1/8

WE BE SMILIN NOW!!