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2point0
05-18-2006, 09:45 PM
The car runs great then at no set RPM I am getting a misfire in 1 and 4 cylinders.
this misfire just started out of the blue
It can happend at any time a stop light or at cruising speed 35-55mph.
Then for no reason clears up and runs fine again.
If I by-pass the MSD the misfire goes away

I have tried replacing the Battery,coil pack, spark plugs,wires
all the dis-2 connections red/black appear to be good.

Here is my set-up
96 Dodge Anveger
2.0 forged internals
Hahn racecraft super16 turbo system
18-19 psi. boost
MSD dis-2 w/8912 adapter

msdtech22
05-19-2006, 10:23 AM
The problem might be a faulty box, faulty tach adapter or a coil breaking down under the heavier load of the MSD Ignition. Try swapping the coils around and see if the problem follows the coil, if it does, then you have a faulty coil. It it doesn't, then the engine management system or the box might have a problem. Repairs to that MSD box are very reasonable, unfortunately the tach adapters will either test good or fail, we cannot repair them. If the units are under 1 year from date of purchase, that would constitute a 'warranty repair' and we would not charge you. Call our tech line (915) 855-7123 and we can issue an RMA number for that repair if you decide to send them in.

msdtechsupport3
05-19-2006, 10:40 AM
It sounds like there is a faulty connection somewhere. Check the terminals on the harness for any corrosion or loose connections.

2point0
05-19-2006, 11:00 AM
thanks for the replys!!
I'm gonna go thru and re-wire all connections

I was thinking the tach adapter might be going bad!?!

2point0
05-19-2006, 12:51 PM
all connections ok

I get the LED flash at a rate of one flash per second then goes away so,,,,,,,,???

msdtech21
05-19-2006, 05:36 PM
all connections ok

I get the LED flash at a rate of one flash per second then goes away so,,,,,,,,???
The LED flashing at a rate of one flash per second, is the units way of letting you know you have a poor connection or low voltage.

2point0
05-20-2006, 06:25 PM
so maybe the alternator is starting to go bad!?

2point0
05-21-2006, 04:03 PM
are the tach adapters known for go bad!???

msdtech21
05-22-2006, 12:25 PM
I would take the alternator and battery to any reputable parts supplier. They usually check each for free. As stated previously the led blinking at a rate of once per second indicates that there is a poor connection or low voltage. Make sure your heavy red & black wires are run directly to the battery (+) and (-) terminals, and are free of corrosion.The tach adapters will work correctly as long as they have good solid connections and good grounds.

2point0
05-22-2006, 10:09 PM
thats just it all connections are good
the LED flashes in sync with the CEL which is a code43 misfire in 1-4 cylinders I'm talkin back fire no power.!

msdtech4
05-23-2006, 02:54 PM
2point0,

If 1 and 4 are not firing then you need to follow the trouble shooting section of the instructions covering testing for spark. This will help determine if the problem is in the DIS unit the coil or the adapter. If you lost a channel in the box, coil or adapter it will kill the two cylinders that fire at the same time. When you do the test with the adapter in place and do not get spark out of that coil then bypass the adapter and do the false trigger test again. This is on page 15 of the instruction booklet.

Thanks,

MSD tech4

http://www.msdignition.com/pdf/frm25956_for_62112_62152/frm25956.pdf

2point0
05-24-2006, 10:02 PM
2point0,

If 1 and 4 are not firing then you need to follow the trouble shooting section of the instructions covering testing for spark. This will help determine if the problem is in the DIS unit the coil or the adapter. If you lost a channel in the box, coil or adapter it will kill the two cylinders that fire at the same time. When you do the test with the adapter in place and do not get spark out of that coil then bypass the adapter and do the false trigger test again. This is on page 15 of the instruction booklet.

Thanks,

MSD tech4



http://www.msdignition.com/pdf/frm25956_for_62112_62152/frm25956.pdf


thanks will do.

2point0
05-24-2006, 10:17 PM
BTW the coil is new

msdtech4
05-25-2006, 01:22 PM
2point0,

If the problem was there and you replaced the coil obviously that narrows it down some. Still do this so you can determine what part is actually at fault.

Thanks,

MSD tech4