Question about 1999 Chevrolet Silverado 1500

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My 99 siverado is getting harder to start especially in cooler and damper weather. Could it be the ETC engine temperature control valve? Jim

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Hi, Jim, my name is Ben. I am going to use your dampness description as a possible cause. Your spark plug wires may be worn out and "arcing" with the dampness. With the engine running, get a spray bottle filled with water and lightly spray the wires. It's best if you even do this in a shady area, and look for sparking. Don't soak the engine, just a light mist should be good to check the spark plug wires.

Posted on May 04, 2010

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What is the difference between the Intake Air Temperature Sensor and the cool temperature Valve?

The Intake Air Temperature Sensor detects the temperature of the AIR being drawn into the engine intake. The ECM uses this do determine the proper fuel-air ratio as cooler air is denser than warmer air. The Cool Temperature Valve is actually called the coolant temperature sensor and tells the ECM the temperature of the coolant in the engine. The ECM uses this to control fuel delivery as the engine warms up (choke function), and it also uses this to control the turning on and off of the radiator cooling fans. In order to determine of the problem is the sensor or the fan circuit, a simple test is to start the engine and turn on the A/C. The cooling fans must run at all times when the A/C is on. If they are not running, it is not the coolant temperature sensor, but a problem in the fan control circuit.

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On a 1993 Grand Caravan, the air flow will only come out as defrost. Can not change to mix, or floor

Hi Jim, I'm glad to help!

Jim lets try something first, here's what I need you to do. Take the negative battery cable off for 20 seconds and before hooking it back up make sure your blower is on HIGH and the control head is in the panel mode (Face Mode) and the temperature is in full cold. Hook the battery back up and start the engine. NOTE: DO NOT touch the control head until it has gone through all the calibration modes and came back to rest at the panel mode and the air flow stays in the panel mode. When this happens the calibration is complete. Then see if it switches to all the other modes. Hope this helps and have an awesome day Jim.

Nov 12, 2012 | 1993 Dodge Grand Caravan

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Can my 2002 trailblazer bak ran without a thermastat

Yes, most all motors can run without a thermostat. They are in the coolant line for the reason of making sure that the water in the engine gets warm enough before cooler water starts circulating thru the engine (an automatic valve ). Most engines are designed to run at a certain temperature and without a thermostat it will just take a while longer for the engine to heat up. Due to the water already circulating upon engine startup.

From my understanding, thermostats were originally installed due to performance issues with motors in cold weather. Obviously, hot weather wouldn't be an issue. If you do take it out and you live somewhere prone to cold temperatures. I would recommend spending the 15 bucks and putting one in by winter, or you might have poor performance of your engine when you first drive it. Good Luck!!

Jun 08, 2012 | Cars & Trucks

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My car doesnt want to start up right away in the morning. Almost like its really cold out and it takes it a min. The rest of the day its fine runs great. Any ideas?

Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.

Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.

Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.

All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers

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I need to know if my car has an engine oil cooler or not. its a 99 dodge intrepid 3.2 liter and knowing this will allow me to replace it sooner and cheaper.

Ii doubt it, most cars do not have oil coolers as thev oil is kept at a moderate temperature by the water jacket of the engine Some high end cars Cadallac. Mercedes Benz etc. may have dual core radiaters where the oil is circulated. See:

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Dec 14, 2010 | Toyota Pickup Cars & Trucks

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Wont idle when cold. Especially on cooler mornings. Eventually it works fine. Sometimes it will clear after a hi rpm rev.

have someone check the engine temperature sensor to see what temperature it is telling the computer,if it is not telling the computer the correct temp,the computer won't give the engine more fuel on cold mornings

Nov 25, 2009 | 2000 Ford Explorer

1 Answer

2001 sebring LXi - Steering sticks in center when cold. After driving short while or in warm weather no probblem. The longer is sits or the colder the weather the harder it is to move from center.

What do you mean by stick? It doesn't turn at all or it is just harder to turn?

Also how cold? Posting your question in May, I don't think you mean freezing winter cold unless you live in the southern hemisphere.

For freezing cold temperatures, it is not uncommen to get harder steering especially if you have old contaminated power steering fuild. At freezing cold temperature, power steering fluids gains vescosity and it is harder for the pump to circulate it, but the problem should go away as the engine warms up. I would suggest that you replace you fluid with a fresh approved one.

May 17, 2009 | 2001 Chrysler Sebring

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First thing you need to check is the coolant temperature switch which is located in the head or inlet manifold area. Basically it measures the temperature of the coolant and tells the ECU to increase fuel for cold starts. 

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2003 corolla heater temperature varies

check your in cabin air filter located behing the glove compartment. see your owner's manual for directions.
When this filter gets clogged air flow is restricted. You can blow the filter out with compressed air or replace. make sure you put in right side up.

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