larryconnors Posted May 14, 2012 Report Posted May 14, 2012 What are the options for replacing a non working guage? According to the plymouth shop manual the sensor, tube, and guage must be replaced as a unit. Is there any place to get one? Quote
greg g Posted May 14, 2012 Report Posted May 14, 2012 search temperature gauge repair. There are a number of threads refering or linking to member Todd Fitch's detailed repair procedure. Quote
larryconnors Posted May 14, 2012 Author Report Posted May 14, 2012 I looked up the repair procedure and It was heartening to find that there is one. Thanks for pointing me to it. Quote
daddyo23 Posted May 14, 2012 Report Posted May 14, 2012 I have one that I don't have hooked up. If you have the face that's in good shape maybe we could swap. Send a PM if interested. Quote
larryconnors Posted May 16, 2012 Author Report Posted May 16, 2012 I have a 1947 2 door that is new to me. The temperature guage sending unit is disconnected and hanging from the firewall. An aftermarket guage is installed below the dash and is likewise disconnected under the hood. The head has a plug where the sensor should go.I incorrectly assumed the temp guage didn't work. Yesterday I put the original sensor in a cup of hot water and to my surprise it works fine. The threads on it are also just fine. Why is it disconnected? Stripped threads in the fitting that goes in the head? At any rate I'll drain the cooling system and reconnect it. Is the thread from the sensor to the fitting pipe thread or just the fitting to the head? I plan to oil the area between the nut and sensor bulb before carefully threading it into the fitting and tightening it. I'm concerned that I could twist the tube and damage it if I'm not careful. I'll also use thread tape to get a watertight seal. Is there anything else I should consider or be prepared for? Quote
TodFitch Posted May 16, 2012 Report Posted May 16, 2012 Is the thread from the sensor to the fitting pipe thread or just the fitting to the head? I plan to oil the area between the nut and sensor bulb before carefully threading it into the fitting and tightening it. I'm concerned that I could twist the tube and damage it if I'm not careful. I'll also use thread tape to get a watertight seal. Is there anything else I should consider or be prepared for? There is a brass fitting that has a pipe thread that screws into the head. You may wish to use pipe thread sealant when installing that. The sensor bulb goes into that brass fitting and then the gland nut on the capillary tubing is installed to hold the bulb in place. That fitting has machine threads and should not need sealant. If you are missing the special brass fitting that goes into the head there usually is an assortment of them in the package with the cheap mechanical temperature gauge sold in the bubble pack auto supply store. Quote
claybill Posted May 16, 2012 Report Posted May 16, 2012 i found a problem with an older motor and temp gage....the thermocouple was not inserted far enough into the head.( using bushings etc) and was giving cool temp readings. make sure your heat tip uses the stock devices . no extra bushings. Quote
Young Ed Posted May 16, 2012 Report Posted May 16, 2012 make sure your heat tip uses the stock devices . no extra bushings. Anyone else see a joke there................ Is it finally my turn in the corner? Quote
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