ignition question

[llwood]

so i was giving the poor abused mustang a tune up today, i did new cap, rotor, wires, msd blaster coil, and an accel TFI module thingy. Now that last one is where my question comes from. Since i put that on i cant get my car to run at WOT above 4000 right at 4 it starts cutting out. I put the stock piece back in and runs fine. Any thoughts as to why this doesnt work??

86 5.0 EFI 5 Speed

 

[Roland69]

is there a rev lim on that "thingy"

 

[llwood]

Haha not sure. Its just the run of the mill accel performance replacement. I wouldnt think a "performance" part would have a limit of 4000 though. Also i forgot to mention it only does it under load. I can free rev it to over 5 grand but when driving it cuts at 4. I was thinking maybe it was just messing up my computer cause i am running a SD car

 

[HISSIN50]

I must have missed something - my first guess would have simply been that you got a bad module. I would see if you can swap it for another at the store you got it from and see what it does.

Good luck.

 

[Strype]

My buddy had the same problem and changed from Taylor wires back to stock and changed his MSD Dizzy cap back to stock and it fixed it- try that

 

[llwood]

it did it with both stock wires/cap rotor and the MSD stuff

 

[willys1]

When you put the ign module on did you apply white grease to it or is it dry?

 

[llwood]

i applied the silicone to the backing as described is that what you mean??

 

[HISSIN50]

i applied the silicone to the backing as described is that what you mean??

You should be using something closer to heat sink grease or dielectric grease.

Good luck.

 

[llwood]

I must have missed something - my first guess would have simply been that you got a bad module. I would see if you can swap it for another at the store you got it from and see what it does.

Good luck.

upon further inspection it may not be a bad one but it is the wrong one, i looked up the part number and there are 2 one for an auto and one for a 5-speed they sent me the one for a auto. Thats prolly where my problem is

 

[Roland69]

go raise some hell wher you got it. well maby ask nice the first time