HI!... MIKE when I talked to you last you suggested that I try running the MSD 8830 capacitor in conjunction with the GMS coils to see if that would prevent the idle stalling I got when running the GMS coils. Well I got the MSD capacitor the other day, and would like to know exactly what wire to the PCM that you spliced the capacitor into? Colour and tracer would be appreciated.

Thanks again for the help, and I hope this solves the problem.

Neal N.

 

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Hi Neal;

I did some searching on the 8830 noise filter cap over at www.msdignition.com/forum/...

Not much there, and zero reference to Granatelli/COPS issues... but ..

Looks like these are usually connected to the power leads feeding an MSD ignition box, as close to the box as possible. Don't remember if you are running one.

Lacking an external box, I wonder if this needs to be connected to the power leads feeding the PCM. I don't have my PCM wiring schematic handy, and I don't know if it would be different than your setup anyway.

Just thinking out loud here....

 

HI!... Thanks for the help. The problem I was having when running the GMS cops was that the truck would only idle for 45 second then simply shut off. Not stall just turm off like someone turned the ignition key off. It also did it when I was in gear (auto) at stop lights waiting for them to turn green. After dying the truck will not restart in neutral but in PARK only. While cruising or at WOT the truck ran fine. When I switched back to my stock FORD cops the truck returned to normal and ran perfectly fine. I talked to MIKE T about it to see if he had any imput on this. He told me that people running the MSD stacker 8 were having the same problems due to both the GMS COPS and the MSD STACKER 8 push about 60,000volts. I think it has something to do with electrical interference generated from the high voltage cops. When the truck was dying I was getting the same codes :

- D147
- D262
- D027

Mike T told me about running the MSD 8830 capacitor in line somewhere to keep the electrical interference to a minumin. He has one on his truck I guess to help with the same thing due to he is running a MSD STACKER 8. I just need to know WHAT WIRE I'M SUPPOSED TO SPLICE INTO to get these dam GMS cops to work properly on my truck. I have like $525(can) invested in these cops and can'y even run them.

 

Hi again Neal;

Did some more digging ...

I found this stuff over at the MSD site:

http://www.msdignition.com/pdf/7800_frm24967.pdf

The diagrams on page 2 & 3 of that PDF file show the 8830 cap connection to the MSD 8 box power supply leads...

Also specifically for the Stacker 8, there were no posted install PDF's; all I could find was this in the forums for the Stacker 8 (#7020) and the 8830:

QUESTION: "I recently purchased a Stacker 7020 for my 99 f-150 with the 5.4 engine, and it had a pamphlet in the box about late model Fords having multiple sparks with the stock ignition system. Besides cutting the loop to find out if the truck has multiple sparks from the factory, how can i find out if it does? I'd hate to cut the loop and find out it does and then have to patch it back together. Any help would be greatly appreciated."

ANSWER: "Yes, your factory ECU is equipped with multible spark. So go right ahead and cut the loop on your application. You will also need a PN 8830 noise filter, this part will need to be placed on the heavy gauge red and black. As close to the box as possible."

Hope this helps

Cheers
Grog

 

HI!... It would help if I was running a MSD STACKER 8 but I'm not. I'm having a problem with the stock PCM and the GMS coils. The truck keeps shutting off due to it thinks I'm stealing it when I have the GMS cops installed. Runs fine with the stock coils. GMS says there is no such problem with their coils on the F-150's but it seems 50% of the guys with the GMS coils on the F-150's are having some kind of a electrical problem with them. All I need to know is where the MSD capacitor splices into the stock FORD PCM harness.

 

Hey Neal;

Sorry - didn't know you were not using a Stacker 8.

Anyway, I found this pinout info:

http://www.mafterburner.com/PCM_PINO...EMENT_REVB.pdf

http://www.modularfords.com/forums/a...f?d=1063649001


Ignition Type: "COIL-ON-PLUG"
PIN COLOR SIGNAL
88 LB/R MAF
89 GY/W TPS
26 LG/W COP1-
71 RED VPWR - VOLTAGE SUPPLIED in START and RUN
77 BLACK/WHITE STRIPE - PGND GROUND

The two pinout sources jive, so I think Pin 71 (Red) and Pin 77 (BLack/white stripe) are correct.

Going by the 8830 connection info, splice into these two points as close to the PCM as possible, or use a good Chassis ground (as shown in the previous post's PDF diagram).

Perhaps someone else can confirm the pinout info...

Best I can do with limited resources. Good luck

Cheers
Grog

 

HI!... HELLO? MIKE T., any imput you have on this would be greatly appreciated!!!!!!!!

 

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HI!... Well I guess I spent over $500 for GMS cops and $45 for a MSD capacitor for nothing then.............................................. ......................

 

So what! That's like .01% of your total cost right?! If that's the last mistake you make then you're doing great!

Seriously, when are you gonna slap some turbo(s) on it? You're the only reason I joined this site. It wouldn't let me read your whole "HP freak" thread without being a member.