ruststang217

i have 2 problems with my 88 gt. when i boughtthe carthe motor was bad , so i put in a 306 with a b-cam , 1) and i got it running but when i hit the gas it would take forever for it to hit 5 grand, and on stlmustangs they told me that if i did the mass air conv it would fixit 2) now that i switched then ecu and switched the 4 wires around on the ecu i am not getting any fuel ( the fuel pump wont turn on )then i was told to take it back to speed dens and then fix whats wrong but i can not figure out what would make the rpms take so long?!?! so when it starts to warm up (right now it is 23 degress out) i am going to switch it back but i need to know what to do after that , when i put the motor in the timing was set at 16 degress any help will be welcomed!

tjmon1

What wires did you swap? I have an 86 and I got the FMS mass air conversion. The only thing it added was 1 wire to the NEW ecu. Check your schematics in the back of your haynes manual and it will tell you which wire you need to add from the mass air sensor.

ruststang217

the 4 wires coming from the mass air meter, all the sites i have been to say that i had to move like 4 wirse around and soilder the 4 wires from the mass air meter into 4 existing wires or something close to it.. i will post up the site i got it from when i get home to my home pc

mattdel

there is a pink wire with a black stripe that runs from the EEC, to the fuel pump relay, and then back to the pump. check your harnesses.

ruststang217

thanks alot i will check it over again asap

ruststang217

http://www.stangnet.com/tech/maf/massairconversion.htmlunless i read it wrong i did what it said but will still check it tomorrow

90GTDan

Did you pull the spout connector when you set the timing? If not your probably about 6 degrees retarded on base timing, that can make em rev slow.

ruststang217

from what i was told from the guy who help me put the motor in , he said the timing was at 14 or 16 can rememebr it's been over 7 months..... and befor the motor was thrown in it was on a engine stand for 6 months so do u think it could be a classic case of cobs?

90GTDan

Well I don't know about the cobs but it could be a classic case of the timing being off. lol When you have a problem like this, or just about any other, the procedure should go something like this:
1 Don't assume anything, ever, verify always.
2 Double check the basics, spark, fuel, timing, etc. as appropriate.
3 Eliminate 1 thing at a time. This is also a biggy causing wrong assumptions about the affect of a change when more that one is done at a time.
This will stop a lot of tail chasing.
Sounds like you have an engine built by someone else several months ago, double check for yourself.