joelnelson1207
New member
- 12
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- 3
- Location
- Reno, NV
Hi Guys,
My name is Joel. I have a M1083 with CAT 3116. Was just driving down the highway and said to myself, "this truck runs better and better every time I drive it". I should have kept my mouth shut. It left me on the side of the highway 30 seconds later!
I have the following problem with the following symptoms:
(a) - When coolant temp gets to 200F fan clutch solenoid kicks on and engages fan clutch as intended and as it has always functioned correctly.
(b) - When solenoid clicks (psssst sound under passenger relay panel), the fan engages as intended, but...
I get an IMMEDIATE TOTAL ELECTRIC SHUT DOWN.
e.g. gauges in cab shut down, fuel shut off solenoid closes and engine stops and I roll to a stop.
If I cycle the master power switch off, then back on, I get power. Fuel shutoff solenoid opens. I start truck. And all runs fine. UNTIL temp gets back to 200F again, fan switches on, then shut down cycle repeats.
NOTE:
(a) - problem / symptom is intermitted. e.g. it happens about 50/50 when temp reaches 200F and fan clutch engages.
(b) - Last week like an idiot I ran the batteries down, tried to crank starter on low batteries before I charged them. I mention this because a year ago I did the same thing and damaged the K1 relay and truck wouldn't start (even with charged batteries). I replaced K1 relay w/ new relay and all works fine.
Questions:
1 - Could I have damaged a different relay this last time I let batteries die? i.e. fan clutch relay and/or temperature sensor?
2 - Where is the fan clutch relay located / what # is it in relay panel? I have looked at diagram and don't see anything that says "fan clutch"?
3 - Is there some short to ground in the circuit?
Anyone have this problem and can suggest a troubleshooting path.
Thank you all.
Sincerely,
Joel
PS - you can call me too if that would help (775) 223 6633
My name is Joel. I have a M1083 with CAT 3116. Was just driving down the highway and said to myself, "this truck runs better and better every time I drive it". I should have kept my mouth shut. It left me on the side of the highway 30 seconds later!
I have the following problem with the following symptoms:
(a) - When coolant temp gets to 200F fan clutch solenoid kicks on and engages fan clutch as intended and as it has always functioned correctly.
(b) - When solenoid clicks (psssst sound under passenger relay panel), the fan engages as intended, but...
I get an IMMEDIATE TOTAL ELECTRIC SHUT DOWN.
e.g. gauges in cab shut down, fuel shut off solenoid closes and engine stops and I roll to a stop.
If I cycle the master power switch off, then back on, I get power. Fuel shutoff solenoid opens. I start truck. And all runs fine. UNTIL temp gets back to 200F again, fan switches on, then shut down cycle repeats.
NOTE:
(a) - problem / symptom is intermitted. e.g. it happens about 50/50 when temp reaches 200F and fan clutch engages.
(b) - Last week like an idiot I ran the batteries down, tried to crank starter on low batteries before I charged them. I mention this because a year ago I did the same thing and damaged the K1 relay and truck wouldn't start (even with charged batteries). I replaced K1 relay w/ new relay and all works fine.
Questions:
1 - Could I have damaged a different relay this last time I let batteries die? i.e. fan clutch relay and/or temperature sensor?
2 - Where is the fan clutch relay located / what # is it in relay panel? I have looked at diagram and don't see anything that says "fan clutch"?
3 - Is there some short to ground in the circuit?
Anyone have this problem and can suggest a troubleshooting path.
Thank you all.
Sincerely,
Joel
PS - you can call me too if that would help (775) 223 6633
Good luck!