What will cause this in your ccrm?

[jacobn4056.]

Hey Folks.
below ive attached a picture of a ccrm that my car blew. Symptoms were car loosing all power. Very low rpm kind of jumpy. Trans feeling like it doesn’t want to be there. No power. And most notably the radiator fan on with this issue by turn of the Key. If the check engine light is on these are the accompanying problems. Ccrm looked to have a burned low fan relay when this resulted in the condition sticking.
I’ve replaced the ccrm with no luck of the fix. This light is intermittent usually. And may result with the clicking of relay. I don’t have a OBD reader or parts store and shops that can get a reading for it.
Beeping box old OBD reader translated to iac valve, I think, but no luck there.
It will run good for a little while then all the sudden. And can’t drive it, it’s intermittent but frequent. I fouled my plugs looking for the problem elsewhere while old ccrm was in car. Where to start? Im thinking a short but maybe someone has saw this before? Do you have any insight or experience into the problem? Hoping I haven’t burned another ccrm.
Thanks people

 

[96blak54]

I wrote up a similar problem i had on the other thread. Check it out

 

[jacobn4056.]

I wrote up a similar problem i had on the other thread. Check it out

Thanks man. I started to simplify and attempt at a solution

 

[jacobn4056.]

This morning the car seems to be doing its deal where it’s engine light and Fan are on always. Including when the engine isn’t running. This is the inside of the new ccrm

the under side looks a little burned but I suppose it could be from soldering

 

[oz95gt]

 

[jacobn4056.]

More than likely this is caused by a water pump leak. Just found it and pulled pump. I’m drying harnesses grounds and wires on the bottom of engine now. It was just enough to not notice and keep those wires saturated.

 

[RAU03MACH]

from the water pump i dont recall ever seeing water run up hill
water pump dose sit lower
but ok

 

[jacobn4056.]

Water running downhill was the problem.
There are harnesses on either side of oil pan. And a drip at all had no way to dry.

 

[RAU03MACH]

but i do believe the top hose on passenger side that box is under that hose and leaking and is seeping in

 

[jacobn4056.]

Not only harness but there are a lot of things under there. Including other electronics. Connections. Grounds. This was saturated. I don’t think I burned wires too bad or at all. But the water pump kept those electrical components wet. As I didn’t run the car long enough for heat to evaporate the leak.

 

[RAU03MACH]

so that harness is wet at the bottom , any wires exposed with no cover on the wire

 

[jacobn4056.]

I’m not sure. I haven’t broken them up yet.

 

[RAU03MACH]

it would complete the circuit and short out

 

[jacobn4056.]

so that harness is wet at the bottom , any wires exposed with no cover on the wire

No no bare wires. They’ve never been tampered with

 

[RAU03MACH]

get the hair dryer from the wife dry it out

 

[jacobn4056.]

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[jacobn4056.]

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[jacobn4056.]

Hey folks.
Alright im finally wrapping up on my Mustangs electrical issues and refresh& replace. Tomorrow she’ll run. I took care of everything major that may have been a barrier to the problem.

Coolant leak flow saturation) (was not noticeable and never dried) I never got hot enough to evaporate so a little water Sit for a time. Kept things wet around my oil pan and lower harnesses. Water pump bolts.

Ccrm burns.
Distributor replacement it’s set to 0 on compression ready to crank and advance.

Ecu capacitor burn.
Checked coolant fan for wear.
fan harness for burns.
It’s all good.

Share your bad ground locations and bear in mind I’ll be doing all of the hard work of tracing ground tomorrow.