HP 500 Ignition Module -failure
 

anyone have one of these ignition module's let go? '99 HP500's engine quit while cruising - no spark - swapped out box from SB engine & fired up? $200 bucks for a new one?? Was thinking of going with MSD but do I still need this ICM box #840130??

Re: HP 500 Ignition Module -failure
 

Is there a rev limiter built in to this component.

Re: HP 500 Ignition Module -failure
 

Yes,
the rev limiter is built into the module,
.........and don't you just love where the
mercury engineers decided to mount it,
:rolleyes: :rolleyes:

Never had a module go bad, but
lost a coil last year.

Re: HP 500 Ignition Module -failure
 

I bought a Crane box to replace mine. $270. from Summit.

Re: HP 500 Ignition Module -failure
 

I had faulty distributor module fail on my EFI motor when I got it. After I installed the motor, and tried to fire it for the first time, my pride and joy simply refused to generate any spark. After some troubleshooting, I eliminated the ignition coil and my FAST fuel injection computer as the culprits. The engine builder overnighted me a new distributor module. A 5-minute swap job later, and she roared to life. I ordered another spare ($90) and keep it with me...

Re: HP 500 Ignition Module -failure
 

any idea what the rev limiter is set at stock ? '99 HP 500

Re: HP 500 Ignition Module -failure
 

5350rpms or very close to it.

Re: HP 500 Ignition Module -failure
 

Had the same thing happen to me TWICE on the same motor, make sure you change the coil, it will run for a while then when it gets hot it shorts out and will take out the module again, learned this last year the hard way. I now have the Thunderbolt IV ignition module, did away with the rev-limiter.

Re: HP 500 Ignition Module -failure
 

I did notice oil residue around the coil - could this be the culprit which caused the problem?? My tachs read 5400-5500 @ WOT are they off? or have these boxes been changed/reprogrammed??

Re: HP 500 Ignition Module -failure
 

now I'm wondering if I've been against the rev limiter all this time & thats what fried the module??? :(