What should the coolant temp be on my Chevy?

I though the thermostat might be broken, so I replaced it with a 180 (was a 195). Problem continues except now it goes from 180 swings up to 210, then back below 180, then to 180 and repeates this all the time regardless of how long I drive. Anyone have any other ideas?

What are the symptoms of a bad coolant temperature switch?

1. Poor fuel economy 2. Black smoke from engine 3. Overheating engine 4. Check Engine Light comes on The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine’s coolant.

What should the temp of the coolant sensor be?

Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm. Get a wiring diagram and find out what ohms you should have at a specific temperature to check the function.

Can a bad coolant sensor cause an overheating engine?

Overheating engine Another symptom of a problem with the coolant temperature sensor is an overheating engine. The coolant temperature sensor can also fail in a manner that causes it to send a permanently hot signal.

What should coolant temp be when engine is hot?

With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.

Is the coolant temp sensor on my Silverado bad?

So, I have a 1994 Chevy Silverado 1500 2wd with a 350 cu in TBI with a bad coolent temp sensor. The old one kept reading 160, so my gas mileage sucked. For the life of me I can not find a replacement one that is an exact replacement.

Where are the coolant sensors on a 1990 Chevy c1500?

I started on a project 1990 Chevy C1500 project a year ago. Pulled motor, swapped for 4 bolt main block and built a roller setup to put back in. I was going through the bags of parts, that I labeled, and found both sensors.

What does the coolant temperature sensor do on an engine?

The engine coolant temperature sensor’s job is to measure the coolant temperature for the engine control module. With this information, the engine control module adjusts the air-fuel mixture depending on the temperature. This article will discuss the most common symptoms of a bad coolant temperature sensor, location, replacement cost,

What should I do if my coolant temp keeps fluctuating?

It’s pretty common for the temp to fluctuate this much, certain locations for the temp sender are more sensitive than others. If you are worried about air trapped in the block, drill a couple 1/8 inch holes in the perimeter of the thermostat flange. This will drain any air pockets in the block within a week or so.

Why does my coolant go from 180 to 210?

Problem continues except now it goes from 180 swings up to 210, then back below 180, then to 180 and repeates this all the time regardless of how long I drive. Anyone have any other ideas? New engine, new radiator, new theromstat, new temp sender…what could it be? Have you bled the air out of the system? That sounds like it might be the problem.

Why does my Chevy coolant keep going up and down?

Unfortunately just driving won’t eliminate the problem. when the cap is on it creates pressure and if there are air bubbles in the system, it will prevent it getting rid of the bubbles. The sender being in a different location is probably why you are seeing this fluctuation.

Why does my car’s temperature gauge keep fluctuating?

The radiator could be plugged, could have plugged cooling passageways, could have a defective water pump, loose belt issue, collapsed hose, excessive load on the engine due to dragging brakes, underinflated tires, and so forth.

What to do if your Chevy Silverado won’t start?

Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

Is there a problem with my Chevy Silverado?

Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC – YouTube Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

What should the fan temp be on my Sierra?

Being an 01 my sierras fans are on a temperature relay thats manually set. Idk why I set them at 210…. no logic to support it. your older truck is different.. yours are by temp… newer trucks, 2007 and up, are not….

What should the temp be on my GMC Truck?

After getting it back from having leaking intake gasket replaced, the temp would go up to 260 before it went back to 170 and then would sit for a little bit, go back to 210, back to 170, back to 245 or so, then back to 170, but It never seemed to run hot. I changed the thermostat with a brand new 190* from NAPA and it seemed to cure a little of it.

When to throw code on Silverado Sierra GMC Truck?

The truck has a cold air intake but has been on for 5 years and has never thrown a code. (I have heard of that giving issues). Once start up occurs, the code reader will pick up the active codes again (P0172 and P0175) about 5-10 minutes before the check engine light pops up on the dash of the truck.

What kind of gas does a 1997 Chevy truck use?

1997 chevy c1500 WT with 4.3 . getting harder to re crank.. Only driveable with both stop revving to keep it going. And that still doesnt work well. Work ive done. New cap and rotor. Cleaned…. Exh gas.

What are the symptoms of a bad coolant temperature sensor?

Hence, it is advised to have your car inspected right away to avoid any serious problems. Here is a more detailed list of the common symptoms of a bad coolant temperature sensor. One of the first symptoms you will notice is that the check engine light will activate.

What is the cooling system on a Chevy 350?

The cooling system for the Chevrolet 350 engine consists of a water pump, a radiator and a thermostat. It is of vital importance that the cooling system work properly, as a cooling problem can lead not only to an engine which overheats, but also to more serious problems such as a damaged head gasket or a cracked cylinder block.

Why is my AC not working on my GMC Sierra 1500?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my GMC Sierra 1500 has air conditioning problems?

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What to do if your Chevy 350 overheats?

Pull any insects out of the fins with tweezers. Severe clogging will prevent air from passing through the radiator and cooling the antifreeze, resulting in overheating. Twist off the radiator cap after allowing the engine to cool, then look into the radiator to observe the level of antifreeze.

What should the coolant temp be on my Chevy?