lonkishna

I am upgrading the 85 tpi to an 87 tpi ecm. I got the repining understood. The problem is the splicing the new maf relays into the computer. I don't know what to connect them to. If anyone has done this and can give me some advice, thanx.

Morley

What exactly do you mean by "don't know what to connect them to"? I did this a year ago and it was pretty easy but I didn't use the "crimp on" splices.

lonkishna

I just don't understand what those wires are supposed to connect to. I read over the tech article several times but it is confusing towards the bottom where it says to splice. I don't know maybe I am just stupid. The repinning is easy and the simple splices (example, MAF burnoff relay and maf power relay to mas connector pin d) I understand. But the last three at the bottom; are we just connecting those two wires or what. It is just a little too confusing for me. This is my first time messing with an ecm though.

Morley

Splice C15 & D15 together using one of the pins from from them to make it a single connection and plug that in to position D16.
Do the same with the wires from D16 & D14 and plug that in to position D15

Take pins A & D on your new MAF power relay and hook them to pin D on the harness that was hooked to the MAS module.

Splice Maf Burnoff relay - pin C and MAF Burnoff relay - pin E
and MAF Pwr relay - pin E together using one of the leftover pins from the above splicing and plug that in to position B1 on the ECM harness.

Hook MAF Pwr relay - pin A to MAS connector pin F

Hook MAF Pwr relay - pin B to D3 on the ECM harness, again using one of the leftovver pins from the injector splicing.

Hook MAF Pwr relay - pin C to B2 on the ECM harness using the pin you removed from C12.

A little hint here, you don't need to put the new relays in the engine compartment. I mounted mine on the bracket that the MAS module was on, piggybacked to the ECM.

Hope this makes it a little clearer than mud

lonkishna

Now that I undrstand. Thanx alot.