Q: 2005 hummer temp gauge drops off and than sputters and sometimes dies. temp up and drives fine

asked by on September 23, 2017

temp gauge drops off and starts to sputter and sometimes dies, while driving. temp gauge will come back up and it will drive fine

My car has 200000 miles.
My car has an automatic transmission.

Car is stalling Inspection $79.99 - $99.99 Get a Quote

It has to first be determined if the actual engine temperature is really fluctuating or instead the stalling is just simply a coincidence with a gauge malfunction. A scan tool can measure engine operating temperature. Fuel supply faults are a possible cause of stalling as are vacuum leaks and faults with engine sensors. On many Hummer models, it has been reported that faults with the throttle body commonly cause stalling and consequently that might be a good place to start the diagnostic. YourMechanic offers a stalling diagnostic. If you request that service, a certified Mechanic, dispatched by YourMechanic right to your location, will get this problem resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Hello. I recently had transmission issues with my truck. I was getting noises from under it as if marbles were rolling around in the torque converter, and soon after my vehicle had problems shifting. However the main thing worrying me currently is that today I tried to at least start my vehicle and it no longer does. Could a faulty transmission or torque converter cause an engine failure?

Why won't my car start?

Hi Ester. Thanks for contacting us today. The first step in diagnosing a problem like you've described is typically tracing and verifying electrical connections that engage the starter. This would begin with the car battery, followed by ground wire connections...

Coolant leak coming from behind the radiator

The coolant leak can only be pinpointed after an inspection but a leaking hose in that location would not be unusual. Coolant leaks can sometimes be either a cause, or a consequence, of overheating. Be sure not to drive the...

98 Nissan quest jerks, skips, and rpm's bounce, when it warms up.

Hi there. The symptoms sound like the fuel pump relay is getting hot and cutting off the fuel pump. Check the fuel pump relay and see if its getting hot. If the relay is getting hot, then the fuel may...

Yesterday my heater control valve broke. so I replaced it but it still overheats and there's no heat. Should I replace the t-stat

You will need to have the a/c controls in the heat position when filling up the cooling system to get out all the air in the system. You may need to replace the thermostat if the engine was overheated bad...

Low voltage light on dash

This seems to be a common problem with Dodge, Chrysler, Jeep vehicles. Many of these vehicles have a fusable link wire that goes from the battery to the alternator. When this fusable link fails, the charge from the alternator will...

My engine light keeps coming on. We have replaced the air/fuel ratio sensor four times.

Hey there. As you may know, this may be caused by a few different things, one of which is a faulty sensor (which you have already replaced). This may also be caused by an intake air leak, leaking or dirty...

What all transmissions are interchangeable with my vehicle

Hello. It really depends on which rear end that you have and if the vehicle is four-wheel drive. If it is four-wheel drive then the differential gearing has to be the same in the front and the rear so you...

Rattling noise under car

Damage often occurs to a vehicle when it hits a curb, even it the initial impact seems small. Your Nissan Versa could be experiencing one or more of its splash shields, found underneath the vehicle, come loose and is now...

Related articles

Hummer Certified Pre-Owned (CPO) Car Program
If If you are in the market for a used Hummer vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read...
How to Get Hummer Dealership Certified
Hummer car dealerships offer automotive technician jobs to mechanics who are Hummer certified through the Universal Technical Institute.
2007 Nissan Versa vs. 2007 Saturn Ion: Which One Should I Buy?
Compact cars as a class are generally meant to be commuter vehicles: with excellent gas mileage, an entry-level price point, and decent safety ratings for those who are on the road the majority of their time. These cars also make...