It has a connector between Dizzy and coil
If you have an Alpha drive there should be a wire between the right connector on the Dizzy to the shift interruptor
The Dizzy module gets power power from the purple wire which use to feed the TBV.
I don't know either.
If your on a hose, then the motor is not getting all the water it can. If your in the water and it still gets that hot, I just don't know
Sounds like you have corrosion issius and instead of finding where its taking place your running jumpers.
Which 5.7 do you have? Original serial number would be best but at least Gi, GXi - E etc
Look on the back of the ECM my guess is it has either 16236009 or 16236999 which is a Delphi number for a MEFI-3. We cannot solicit to buy/sell/give but can post in the Offshore Only Wanted section.
The 861721T2 is replaced by the MEFI-4 but it to is NLA. Bob at OBD Diagnostics can test and...
I would try disconnect the plug from the Temp switch. As before one side will have power until the motor starts, then it will be ground and go to zero. You could pierce the insulation but that can cause issues later if not sealed up
If after the motor starts the lead goes to zero, you know...
Its hot riding a tractor
You have a MEFI-3 but not positive its 30 or 43. The Reg spiking is ok so long as it doesn't go above 30 for a 30 or 43 for a 43. With the motor running it should be steady at spec. Merc used 16236009 first and then 16236999 later, just not sure when they changed...
To figure out what is happening is same for gas motor, need to do a compression test. While it might be the exhaust, but I would think more a head gasket. At any rate doing a compression test will verify.
Injectors will need to be pulled
Me neither and have not accomplished flow dynamics to prove, just all are that way. Water comes in and the circulating pump is rotating CW from the front of the motor, so my pea brain believes this helps it move to the port side
12V is always present on one lead of the TKS module
The module is turned ON by a ground being applied to the other TKS lead
If there is no ground (motor cold, key not on) you should read 12V on both leads. Once motor starts the oil pressure switch grounds one lead of the TKS
The Temp switch...
