Skip the auto shop - Our mechanics make house calls

Q: Temperature gauge stuck left

asked by on

I needed to do some testing with my cooling fan – the really big one behind the radiator. I had to find my coolant temperature sender drivers side way up in the engine block. It had a single green wire in it. Then I started the engine, grounded the sender to the engine block with a short piece of wire, and the fan didn’t work. But my temperature gauge tinged sharp right. Now my gauge is stuck over to the far left and doesn’t work. It still tings, but it doesn’t work properly. Do you know how I can fix this?

A: Hey there, thanks for writing in about your...

Hey there, thanks for writing in about your 1987 Chevy. When you bridged the temperature sensor wire to the engine block, this effectively "shorted" the circuit. It is probable that this damaged the temperature sensor or the gauge itself. If you need an expert to take a look, a professional mechanic, such as one from YourMechanic, can inspect the AC system and guide with the proper repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Oil pressure dropping

I hate to be the bearer of bad news, but it sounds like your engine is at about the end of its useful life. If a motor seizes, the piston has become so hot and expanded that its stuck in...

Q: Smell of coolant outside of car after running, no visable leak

There two places I would recommend checking on this: In the trunk by the coolant cap there is a plastic shield. Remove this and you should see a coolant air relief, or "burp" valve. Sometimes you will see...

Q: Cooling fans

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...