How to test your Cherokee coolant sensor and wiring?
To properly test the coolant sensor, you’ll need a multimeter that can test for resistance, most do. Attach one lead of your tester to the black wire, and the other lead to ground. Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero.
What should the coolant resistance be on a Cherokee?
Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero. Now raise the float up as if you had a full coolant tank — the resistance should be approximately 3.3 ohms.
What do you mean by temperature gauge is fluctuating?
Temperature gauge is fluctuating, sometimes showing overh… Q: Temperature gauge is fluctuating, sometimes showing overheating.
What does bad light mean on Jeep Cherokee?
If you own a 1990s Jeep Cherokee there’s a good chance you’ve become intimately familiar with the Coolant Sensor Bad light on your dashboard. What does it mean, anyway?
Where is the temp sensor on a Jeep Cherokee?
Second, the temp sensor for the gauge is at the back of the engine in the head, the hottest place in the engine cooling system. It might be 220° there, but only 195 at the stat. It is a problem with a long engine block with the coolant coming all the way from the front.
How many ohms does a Cherokee coolant sensor read?
Attach your lead to this wire, and the other end of your test lead to ground. You should read the same 3.3 ohms for a full tank. If you don’t, you have a bad wire and you need to replace it.
What’s the temp of a Jeep Cherokee in Texas?
Here in Texas at a pretty constant 100 plus degrees during summer months my jeep will run all day at about 190 degrees if I leave the fan on while Im driving.
Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero. Now raise the float up as if you had a full coolant tank — the resistance should be approximately 3.3 ohms.
How is the crankshaft position sensor in a Jeep Grand Cherokee?
As you can see in the photo above, the crankshaft position sensor is a 3-wire sensor. Since it’s a Hall Effect sensor, it needs power and Ground to generate its crankshaft position signal. Power is in the form of 8 Volts DC (1994-1995 5.2L V8 Jeep Grand Cherokee) or 5 Volts DC (1996 5.2L V8 Jeep Grand Cherokee).
What does a bad light mean on a coolant sensor?
The Coolant Sensor Bad light is supposed to tell you when your coolant sensor is malfunctioning, and this protect you from an overheating situation that you can’t anticipate, followed by a warped head or other heat related breakdown that can be very expensive to replace.
Where is the coolant sensor on a Jeep Cherokee?
Your Jeep’s coolant sensor (or at least the one that annoying light is referring to) is located in your coolant overflow reservoir. There’s something about the design that is almost guaranteed to cause a failure of some sort. Sometimes it’s the wiring, other times it’s corrosion at the plug. Then sometimes the sensor really us the problem!
As you can see in the photo above, the crankshaft position sensor is a 3-wire sensor. Since it’s a Hall Effect sensor, it needs power and Ground to generate its crankshaft position signal. Power is in the form of 8 Volts DC (1994-1995 5.2L V8 Jeep Grand Cherokee) or 5 Volts DC (1996 5.2L V8 Jeep Grand Cherokee).
If you own a 1990s Jeep Cherokee there’s a good chance you’ve become intimately familiar with the Coolant Sensor Bad light on your dashboard. What does it mean, anyway?