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Why is it that when you cut on the air or heat in my truck its starts idling bad?
Most likely one of two things need checking. #1 make sure your fan assembly is working properly. This means that the fan is turning and not sticking or off completely. However in this case you would be experiencing "running hot" while idiling at red lights. #2 Your MAF ( main air flow) it could be clogged or your sensor might be dirty. To see if this is the case, go to your parts store and buy a can of SEAFOAM. It runs about $10 a can. Empty it in your gas tank on E fill up with atleast mid grade gas this time. Run it on the interstate hard for 15-20 minutes or so. Once you get back on street roads if the hard idle has stopped then you will need to get a cleaner spray for the MAF sensor or let a repair shop clean it for you, but it will cost considerably more of course.
The HVAC ( heating, ventilation, air conditioning) servos use engine vacuum to operate, you may have a fairly large vacuum leak in the HVAC system.
What else can I help you with?
How do a just idling on 1992 1500 truck?
You can adjust the idle air control valve on a 1992 1500 truck while it is just idling. This is done if the truck is idling too fast or too slow. It will help the truck run better.
What happens to when heat is added to a balloon filled with air?
the Balloon starts to get starts to heat up and then it pops
Why does heater blow cold air when car is idling?
The heating system doesn't get heat until the car warms up and the thermostat opens.
What would cause truck not to heat up at idle and then I get in truck and drive around yard a few times it starts to heat up and then after I start driving it a few miles it starts blowing cold air?
sounds like it could be the thermostat ================= The problem is probably in your cooling system. First, check your radiator and see if you have enough coolant. If that's not the problem, check for blockages. How old are your hoses? They may need to be replaced.
What part can you buy to stop fast idling and pulsation idling?
change the mass air flow senser
Why does your truck over heat with the snow plow on?
The plow blocks the flow of air to the radiator for cooling.
Heater starts to turn cold when at stop light - what causes that?
The #1 cause of cold air from the heater when the car is stopped, or the engine is idling, low engine coolant levels.
How does a car idle?
by the idling air control valve
99 ford expedition front air blows cold for a while then turns hot but rear air works fine?
the ford 99 is a younge truck and if it does that then you need to get a new heat/air conditioner you might need to get a new truck.
How do you set idling speed on Renault megane 1.4?
The idling speed is automatically sensed ....and set by the Air control valve
Explain how the earth can heat the air by conduction?
To understand this, you need to know how the earth gets heated. It is obvious, by the sun. As the land gets heated, air molecules in contact with the land starts vibrating as it starts gaining energy from the land.(All bodies want to equilibrium with the other body) As one of the molecule starts vibrating because of heat,it starts transferring its heat to the other molecules via conduction. This process finally heats the entire envelop of air , BY CONDUCTION.
How many gallons of gas would a semi-truck use traveling 1687 miles?
About 270 gallons of diesel--the exact number if you're getting 6.5mpg is 259.54 gallons, but that doesn't take into account traffic jams, docking or idling the truck to run the air conditioner.
