Question about 1993 Dodge Spirit
Changed out theromastsat changed out temp sending unit when I unplug wires from temp sending unit fan will click on when I reconnect temp sending unit fan does not turn on causing the temp to run hot
I have similar problem in that my rad cooling fan won't run when hooked up to temp sending unit. Sending unit works okay, displaying what seems like proper temps on inside gauge, rising & falling with engine temp. However, my fan does NOT turn on when wire unplugged from sending unit. Tested fan motor with 12v applied directly & it runs fine, so motor okay.
Haynes manual identified a faulty cooling fan relay (in a situation with your symptoms), which is mounted on the drivers side fender of the engine compartment with 1 other on a support bracket (2 others on same bracket if you have ABS), facing forward toward headlight (NOT nearby ones that are parallel to fender, which has 3 relays on a support bracket). This should work in your case, but didn't in mine.
Several of these close-together relays have the same # on them, so you could swap 2, to see if this is your problem, since normally 2 or 3 relays wouldn't fail at same time. To be sure, I bought a new generic relay of proper # from local auto parts store -- about $10-12 I think -- and installed it in the right place but fan still didn't work. Swapped the 2 relays next to each other (there are only 2 on my forward-facing bracket), both with same #, and still no go.
I'm TOTALLY STUMPED on mine, but yours should work with a functioning relay of proper #. Let me know how it goes.
If anyone has suggestions for my related problem, I'm all ears!
Posted on Jun 21, 2014
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Posted on Jan 02, 2017
if there is no knocking noise then replace the oil sending switch this should fix your problem let me know
Posted on Feb 22, 2009
Check the connection betwteen the temp sensor, located on the block and check your fuses/relays. It may help if you pull and reseat each fuse. This is free and saves a lot of headache swapping out parts.
Posted on Mar 13, 2009
Definitely the gauge can be changed, provided the float in the fuel tank is OK, i.e. no leaks. This float connects to a potentiometer which records the current flowing thru it and displays it in the gauge. So before replacing the gauge measure the current and match that against the quantity of fuel in the tank...............sodeep
Posted on Jun 25, 2009
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