After I picked up my 1987 D-150 truck from the shop for A/C installation, my temp guage didn't work. They admitted to damaging the temp sensor during the A/C install so they replaced it. Before I dropped the truck off, the temp would read three marks above C with the 195 thermostat I replaced from a 180. Now, it reads one mark above half-way with the 195. I'm wondering if the sensor they installed isn't quirky. Since it was on their dollar, I'm betting they didn't use a Chrysler sensor. Either way, I don't want the truck running that warm. Is there a way to obtain a real-time Fahrenheit temperature during operation? I don't trust my guage or the sensor. I'm considering flushing the cooling system anyway, its been two years since it was done last. What is the factory thermostat? 195? Opinions please...
:help:
Speed Dragon
05-08-2009, 11:56 AM
You can buy infrared temp guns pretty cheap.
bherder
05-08-2009, 04:18 PM
You can olso use a 'candy thermometer' or a 'Meat thermometer' (Like what you'd stick in a roast or turkey to make sure the insides are cooked) .... both are pretty cheap.
My guess is the shop bought the cheapest temp sensor unit they could. I learned it never pays to buy 'bargin' with these things. Even though you'd have to buy it yourself, I'd suggest a 'Standard Ignition' unit (And not their cheap-o unit..) They're not terribly expensive... Maybe about $10.00 or so...
lilredex
05-09-2009, 01:29 PM
You could also add an aftermarket temp. gauge and mount it under the dash on a little panel. Get the mechanical type with the bulb and capillary tube. Best to check its calibration before you install so you know where you stand. A candy type thermometer works best in a can of water heated on the stove or BBQ. You can compare the two readings as the temp. rises. Install the "bulb" in a dead ended "T" in your heater hose, leaving the engine. If you have AC that physically shuts off the coolant flow, you may need to find another location for that sensing bulb.
