Questions on My MAF Upgrade. Fuel Relay, and Other stuff....

TenorPlayinGuy · Nov 12, 2005

I just updated my 87 mustang with a MAF Harness from a 91 Mustang lx 5.0. Just a complete swap out of my current harness, and in with the new parts as well. Pretty much going froma stock 87 5.0 mustang, and upping to a 93 cobra intake, 24# INJECTORS, Pro-m Mass air, Cold Air Intake, etc etc. Brand New balancer and a Grand Tune up to round it all out.

I noticed that there are now two relays that reside below the MAF, I know one is supposed to be for the fuel relay, The question on that one is Would I just transfer the relay under my seat to that socket now under the MAF?

And also there is a second socket for a relay under the MAF, What is this supposed to be fore? EEC power?, Emissions?

Ill think of a few more, THanks though fellas.

If I HAVE TO I have a Complete body harness Which I can change out from a 92 LX Hatchback 5.0 as well. I should do it, but I'd rather not...

thanks for anything fellas
Daniel

HISSIN50 · Nov 12, 2005

The second one under the air inlet is the WOT relay.

jrichker · Nov 12, 2005

Remove the relay from under the seat and plug it into the FP relay socket under the MAF. The one under the seat is no longer connected to the computer.

TenorPlayinGuy · Nov 12, 2005

Dude.... YOU GUYS ROCK!!!!

mustangmarks · Nov 12, 2005

jrichker said:
Remove the relay from under the seat and plug it into the FP relay socket under the MAF. The one under the seat is no longer connected to the computer.

I didn't do what was previously stated could this be why my car has no power to the FP and Ignition? I resently changed my 88 SD to Mass Air and when you turn the key you get nothing no FP no crank. I'm not sure what year the harness it is out of but there is an round connector on the part of the harness that goes inside of the car that goes to nothing. Can somebody give me an idea?

TenorPlayinGuy · Nov 13, 2005

same here.... That round harness I dunno where it goes or what it does. Its a round 8-pin connector

mustangmarks · Nov 13, 2005

Anybody know? Ive searched but cant find my answer.

TenorPlayinGuy · Nov 14, 2005

Well I have a complete interior harness from a 92 mustang, I guess I can take a gander at that seeing as how there "shouldnt" be much difference from a 91. Ill let you know what I can trace down.

TenorPlayinGuy · Nov 14, 2005

Okay Would I be able to make this work if I just swapped out my Complete interior harness as well... I know it will be a PIA but If I must I must.

TenorPlayinGuy · Nov 14, 2005

hmmm Fuel Pump wont prime. Maybe Ill just swap out the harness to fix it all... Are the harnesses from the 2 yrs compatible?

TenorPlayinGuy · Nov 21, 2005

Okay... I rewired, and restarted everything. Got the little 4 wire harness and doing the way in the Stang net Tech article. Started to tear apart the dash and solder all the new connections for the new harness to work. I ended up with this last night when I finished that...

This morning I swapped the harnesses, and reinstalled the dash to a certain extent, ( I also changed out my faulty ignition switch and upgraded to a 140mph Speedo. You can still see my Poor old Stock lower intake int he passenger floor. ahh good times. DOH WELL Bring on the good stuff)

after realising my Cold Air Intake wasnt going to work (for some reason it was rubbing like crazy on my strut tower) I just decided to slap on the stock style hoses and slapped the filter on the other end of the MAF, TINY LITTLE FILTER!!!

The Car runs very choppy. Starts up very high rpm, then once it gets down around 1200 or less its VERY ruff... Like its missing and lacking fuel... I cant check the pressure yet as My gauges havent shown up yet, but I think I might swap back to the stocker just to see if thats the real reason behind that surging.

TenorPlayinGuy · Nov 21, 2005

Here is the link to the 52mb Quicktime movie which is about 2mins long I think of my car.... umm TRYING to idle.

http://www.racingda87stang.com/images/DSCN0262.MOV

Just right click and save link as

TenorPlayinGuy · Nov 21, 2005

what do you guys think it could be....

TenorPlayinGuy · Nov 21, 2005

TenorPlayinGuy · Nov 21, 2005

currently checked out my FP. And its steady at 40psi. It was set at like 50psi when I slapped the gauge on... so Its a little leaner now... but its still jumpy. So Now Im cleaning the MAF wires

TenorPlayinGuy · Nov 21, 2005

ahhh... there we go... All nice and Clean. NEXT UP IS THE TIMING

TenorPlayinGuy · Nov 21, 2005

All set.

New O2's, IAC(Ford), TPS Set to .98, FP set to 40psi, Cleaned the MAF, Cleaned the ACT, Still gotta replace the ECT, and New Spark Plugs are going on tonight. Til then what can you guys say about my surging....

The car runs a smooth Idle, The motor Sounds like its surging though. Maybe its just me.

TenorPlayinGuy · Nov 22, 2005

bumps

TenorPlayinGuy · Nov 22, 2005

rerebumped

TenorPlayinGuy · Nov 22, 2005

officially the worst amount of replies in the history of Stangnet... Im shocked. No one can help me out?

Questions on My MAF Upgrade. Fuel Relay, and Other stuff....

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