What should the coolant temp be on a Jeep Wrangler?

What should the coolant temp be on a Jeep Wrangler?

CTS ohms should be consistent with the actual coolant temperature. That is why I suggested measuring the thermostat housing temperature—close to the coolant temp sensor. Compare the real coolant temperature to the CTS and gauge reading; see whether the sensor and gauge are accurate for the coolant temperature.

What should the thermostat be on a Jeep Wrangler?

Most radiator thermostats are designed to run at about 200 degrees. This one should be obvious, but never take out your thermostat; this would defeat the purpose of your cooling system. Keep in mind the thermostat is used to monitor the temperature of the coolant, hence why it’s placed between the engine and the radiator.

How does the cooling system work on a Jeep Wrangler?

A cooling system is comprised of six main parts: Your coolant is designed to absorb heat from the engine block. Coolant is pushed through the engine block via the water pump and then through a series of fins and tubes inside the radiator that allow the heat to dissipate.

How does the coolant sensor work on a jeep wranger?

Coolant temperature sensor test and change for the Jeep Wranger. Coolant Temperature Sensor monitors the temperature of the water in the engine. The PCM uses this temperature reading to adjust the fuel injection and timing. In some cases the PCM uses the reading from the sensor to turn on the electric cooling fan if so equipped.

What should the temp be on a Jeep Wrangler?

Then depending on what you do with your jeep it is “ok” to see temps up to 240. At that temp you need to change what you are doing otherwise you will force the engine to defend itself. Either by de-fueing or going into limp mode etc.

What should my operating temp be on my 91 YJ?

My 91 YJ (with a 4 banger) had an operating temp of 210°F. I just replaced the thermostat (and heater core and their hoses along with a rad flush) with a 180°F variety. Now my operating temp has dropped to about 185°. I assume this is because of the thermostat change (and possibly the other cooling system replacements).

What’s the operating temp of a 1988 Jeep Cherokee?

1988 Jeep Cherokee w/ 410,000+ miles. Now a 100% Electric Vehicle! Hi, I was going to post a similar thread. My 91 YJ (with a 4 banger) had an operating temp of 210°F. I just replaced the thermostat (and heater core and their hoses along with a rad flush) with a 180°F variety.

A cooling system is comprised of six main parts: Your coolant is designed to absorb heat from the engine block. Coolant is pushed through the engine block via the water pump and then through a series of fins and tubes inside the radiator that allow the heat to dissipate.

CTS ohms should be consistent with the actual coolant temperature. That is why I suggested measuring the thermostat housing temperature—close to the coolant temp sensor. Compare the real coolant temperature to the CTS and gauge reading; see whether the sensor and gauge are accurate for the coolant temperature.

Think about it… if the engine is at 210 degrees (or hotter, whatever), both a 180 and 195 degree thermostat will be fully open. There will be NO difference. On a cold day, yes an engine may run cooler with a 180 degree thermostat. Personally i changed mine out to a 180 the first week after i bought the jeep.

Do you need to change speedometer pinion on Jeep Wrangler?

I added weight with the ARB front bumper, Warn rear bumper/tire carrier, bigger tires and spare tire, etc. Gearing is now the equivalent of “stock”, in fact I did not need to change the speedometer pinion, the speedometer is right on with the original speedo driven gear.

Is there an electric fan in a Jeep Wrangler?

The OE electric fan helps considerably, but your Wrangler does not have one like the XJ. You do have a nicely sized mechanical fan and shroud, though, and if the fan clutch works properly (check it), you should be okay.

Where is the temp sensor on a jeep?

The one wire sensor in the back sends temp readings to the gauge in the Jeeps dash. If you temp gauge isn’t acting right, replace the one wire. The two wire sensor located in the thermostat housing sends its signal to the PCM. For poor performance issues and testing we are going to look at the two wire up front.

Coolant temperature sensor test and change for the Jeep Wranger. Coolant Temperature Sensor monitors the temperature of the water in the engine. The PCM uses this temperature reading to adjust the fuel injection and timing. In some cases the PCM uses the reading from the sensor to turn on the electric cooling fan if so equipped.

How to change the temp of the coolant sensor?

Also a way to vary the temperature of the sensor. Something like a pan of water on the stove top over low heat. Use a thermometer to measure the water temp as it climbs. Not the water temp as you measure the resistance and compare it to the chart below. See YouTube video at the bottom of the page.

How tall are the gears on a 99 XJ?

When I set up the ’99 XJ 4.0L with a long-arm lift and 33″ tires, I changed the original ring-and-pinion gears to 4.10 ratio from 3.55 OEM. The 3.55 OEM gears were actually “tall” to start with, and if I had it to do again, 4.56 would have been smart.

Is the YJ gauge compatible with the JK Wrangler?

Most of these components are forwards compatible and universal, too – able to be used with every Jeep Wrangler generation, including 1987-2018 Jeep Wrangler YJ, TJ, JK, and JK Wranglers. *Please see product pages for any exceptions.

What do gauges look like on a Jeep Wrangler?

Available from several proven makers, these gauges feature striking face design made to have a “Jeep Wrangler” look, often with black faces, white lettering and numbers, red or orange indicator needles, and chrome bezels surrounding them.

The OE electric fan helps considerably, but your Wrangler does not have one like the XJ. You do have a nicely sized mechanical fan and shroud, though, and if the fan clutch works properly (check it), you should be okay.

What should the temperature be in a Jeep Wrangler?

210-degrees F makes us wary but will not hurt your iron block-and-head Jeep 4.0L engine. Also check the ohms reading at the CTS, these sensors can be off and give a false gauge reading.