Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 2006 freightliner think fl70 with c7 cat. Had a/c
Hello, I have a 2006 freightliner think fl70 with c7 cat. Had a/c compressor and drier replaced, but engine fan doesn't cycle with a/c on. … read more
Bradey V
Bradey V
Certificate
Fan clutch will not disengage while driving and manual
fan clutch will not disengage while driving and manual switch not working in cab. … read more
Andy
Andy
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Vocational, Technical or Trade School
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Just installed a new block 6nz and having trouble finding
just installed a new long block 6nz and having trouble finding the location to a plug. im thinking its coolant temp because the ecm is reading 194 degreees coolant temp at all times. … read more
catmastertech
catmastertech
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Vocational, Technical or Trade Scho
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Working on a 3406e 5ek in 1996 379 pete, eng fan running all
working on a 3406e 5ek in 1996 379 pete, eng fan running all the time, check wiring and fuses and relays all seem to b ok, on the plug that goes on the manual o/r switch in cab all the wires are hot i… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Have a 3406e in my 2000 model 379 and my engine fan comes on
Have a 3406e in my 2000 model 379 and my engine fan comes on and off at highway speed. It's not running hot. I've replaced the fan sensor on fire wall and a/c sensor on side of the radiator. The fan a… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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1998 freightliner fld with a 3406 cat.clutch fan will not
1998 freightliner fld with a 3406 cat.clutch fan will not kick in with ac running or with height temp.need advise or wiring schematic and dies it have a relay for the clutch fan … read more
FIX-IT
FIX-IT
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The fan doesnt come on with jakes or when engine temp is hot
the fan doesnt come on with jakes or when engine temp is hot in our 1998 peterbilt 378 with a 3406e … read more
Cat Man
Cat Man
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I have a 97 Pete with 3406e 5ek. The cruse control works
I have a 97 Pete with 3406e 5ek. The cruse control works until I turn on the air conditioner. It will hold for a few seconds and then quit. It will hold a fast idle with a/c on when sitting still. Any… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
My question is on a 3406e 2ws cat in a 2000 ext hood pete.
Hi my question is on a 3406e 2ws cat in a 2000 ext hood pete. My engine fan comes on going down the road on cold days when the engine is not heating up or pulling a load. A/c switch is turned off.… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Cat man. I have a c15 that will not engage clutch fan when
Hello cat man. I have a c15 that will not engage clutch fan when coolant temp reaches high temp. Fan will come on manually with switch and comes on with a/c. Temps climb to atleast 220. New temp switc… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Cat Man, I have a KCB25071 that the engine fan stays on all
Cat Man, I have a KCB25071 that the engine fan stays on all the time. What all inputs will cause the fan to come on? The a/c pressure is off, the manual on/off works, fan output is off. circuit works … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Cat Man I have a 1LW that isnt turning on the cooling fan when
Cat Man I have a 1LW that isnt turning on the cooling fan when the a/c sends the signal to. I can make the solenoid come on with the diag test can I change something in my config to fix this?… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a 2000 pete with a C-12 ESN-2ks11381 the engine fan
I have a 2000 pete with a C-12 ESN-2ks11381 the engine fan isn't working at all. with et i can see the manual fan switch on off is working but the fan output stays off. is there a parameter that is ca… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
my 98 pete had a 3406e s/n 1lw that thru a rod thru the block,
my 98 pete had a 3406e s/n 1lw that thru a rod thru the block, i have replaced it with a 3406e s/n 5ek85180 that i rebuilt on the floor. now that it is installed in the truck it will not start. runs o… read more
Cat Man
Cat Man
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2000 pete with a Cat motor. Code is 190-12 Primary engine
2000 pete with a Cat motor. Code is 190-12 Primary engine speed loss of signal. What sensor causes this code and where is it located? ESN 1LW01133.… read more
Cat Man
Cat Man
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catman is there a way on 6nz to see if the ac switch for the
catman is there a way on 6nz to see if the ac switch for the fan is telling the ecm to turn on the engine fan. The switch I am talking about would be one in the ac lines that reads the pressure. basic… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
have a 2005 freightliner columbia with caterpillar engine.
have a 2005 freightliner columbia with caterpillar engine. A/C problem--blows cold but couple hours later acts like it freezes up: not as cold, little airflow out the vents. Compressor observed and ne… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
1996 pete with a 3406e. Fan will not come on when under load,
1996 pete with a 3406e. Fan will not come on when under load, the fan will cycle when stopped with brakes applied. Have changed fan stat and no difference. should kick in around 215, but will climb to… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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