MAF Problems

[Scott McKay]

I seem to be having a strange mass air meter problem. With the mass air meter plugged in, the car is angry and won't rev up. With it disconnected, it idles better and will rev up, at least when sitting still, better. I'm starting to think there is some issue with the adapter plug on the mass air meter to the stock harness, so here is my question. The mass air meter that we get clearly isn't intended for this car. If you take the adapter plug off, it has 6 prongs coming off the mass air meter, and the little adapter converts that down to 4 prongs. I don't think I have a great connection. What does this mass air meter actually fit, I'm going to get a harness off of that, and just make a manual crimp onto my wiring system, and do away with the adapter plug. Thoughts?

[skullandbones]

http://www.cnlperformance.com/MAF_info3.html

If you read the section click on bottom What is a MAF..... you will see your explanation - wiring connections A thru F. Mixing and matching the MAF with other EEC combos is not a good idea, sometimes it works and sometimes it won't. If I were you I would spring for a MAF calibrated to your setup including injector size. Good luck, WEK.

note: Change MAF before thinking of modifying your harness.

[avgjoe]

Scott,

Looks like it's for a '96-04: http://oldfuelinjection.com/?p=26. Is that what's supposed to come w/ the kit? What was the part number on the MAF? If you got a pig tail, looks easy enough to do. E and F the outermost pins aren't used.

Joe

[FFRSpec72]

This is what you were to get http://www.summitracing.com/parts/SUM-29051B-C/ I did not have any issues with this part.

[Scott McKay]

@skullandbones - we have a spec MAF in this class, I cant change to another brand. I've swapped the MAF with a new spec legal one as well, same issue. Thanks for the C&L link, I will check that out.
@avgjoe - I got the correct part with the kit, but the MAF has 6 plugs on it, and TrickFlow/Summit just puts on an adapter harness to get the MAF to work with the 87-95 cars. I do think you are right in that the MAF is for the 96-04 so I'm going to order that pigtail somewhere.
@ffrspec72 - that is the part that I received, but look closely at the picture. The picture shows 4 actual prongs. Thats coming out of the adapter harness. The EABCDF prongs are actually all on the MAF if you pull the adapter off. I think there is a connection issue in that adapter.

[Scott McKay]

I will answer my own question. If you want to order the plug, call Ron Francis wiring and order the MAF extension cable for a 1996 Mustang GT. It fits the MAF that we have perfectly, then you can solder it into your wire harness. All of that said, I believe the MAF had an issue, in conjunction with the fuel injectors. We also swapped the entire engine harness.

[avgjoe]

Scott,

Don't forget the memory function in the EEC. It gets erased after disconnecting the battery and takes a some run time at less than WOT to adjust/remember stuff. Keep us posted and don't forget the details.

Joe

[FFRSpec72]

I will answer my own question. If you want to order the plug, call Ron Francis wiring and order the MAF extension cable for a 1996 Mustang GT. It fits the MAF that we have perfectly, then you can solder it into your wire harness. All of that said, I believe the MAF had an issue, in conjunction with the fuel injectors. We also swapped the entire engine harness.

Scott, so you did the following?

1) swaped out MAF for a new MAF (as one you got may have been faulty)
2) took off the adapter (reduced from 6 prong to 4 prong and chnaged the shape) on the MAF
3) ordered a 96 MAF plug from RF and fit that into your harness (so you eliminated the F and E wires)
4) replace the EFI harness???