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Anonymous Posted on Feb 21, 2018
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Overheating Had a new serpentine belt installed and now heating takes a long time to activate and engine over heats (according to the gauge) but returns to normal running temp when air conditioner is turned on. Is this a thermostat problem or something related to the serpentine belt installation.?

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Jude24

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  • Posted on Feb 21, 2018
Jude24
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I would check your cooling fans. When you turn on the AC, it probably starts a second fan. Maybe the other one is not working?

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Anonymous

  • 54 Answers
  • Posted on Jan 20, 2009

SOURCE: Intermitant temperature

Check to make sure your thermostat works right by monitoring the warming up of your engine. With a completely cold engine, start and run the engine for a few minutes, then put your hand on the top radiator hose to monitor if and when it gets warm as the thermostat opens more and more and note the gauge reading( if it works) the top radiator hose should be unbearably hot within 5-8 minutes. If the therm. opens right it should close right aswell, staying open a little while eventhough the radiator may have cooled may be what you are experiencing causing the rapid cooling and is nothing to worry about. The Hose should not get warm very soon after starting the engine. Regarding you gauge, lets take one step at a time, verify proper op. or the therm.

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Anonymous

  • 11896 Answers
  • Posted on Apr 07, 2009

SOURCE: No hot air at rear vents on 98 Toyota Sienna CE

Possible that heatcore is going or hose from heater is leaking or falling off.
You can go to www.autozone.com and see a full free online repair manual for your van

jagjeffery

Jeffery Lewis

  • 329 Answers
  • Posted on May 29, 2009

SOURCE: TIMING BELT MARKS DONT MATCH AFTER ENGINE TURNED OVER

dont worry about that you will have to turn the motor over 40 to 50 time before those timing belt marks line up again if your pulley marks line up correctly thats all you have to worry about

Anonymous

  • 11 Answers
  • Posted on Jun 26, 2009

SOURCE: 1990 toyota pickup 22re engine runs hotter with ac on

I would bet that your fan is not coming on. When an airconditioner is on it uses alot of power and that makes heat. The engine will warm past the safe point. Most vehicles should have a switch that turns the fan on and off to cool the motor. You can start the vehicle and pop the hood. once it gets warm if you don't see the fan come on that's most likely your problem. Be very careful around the blade because they come on and off suddenly. I go to Auto Zone for free diagnostics. They only sell parts but can walk you thru possibly fixing it yourself.

Anonymous

  • 75 Answers
  • Posted on Oct 03, 2009

SOURCE: 1990 toyota corolla wagon 1.6 liter 5 spd. overheating

you've got a possible blockage in the head or block.

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Related Questions:

1helpful
1answer

2002 celica no heat /overheating
I doubt that the belt is the problem as you will be have problems with the charging and probably the air con. The most likely problem would be the thermostat. Thermostats have two purposes, firstly they stop water circulating when the engine is cold so that it can reach operating temperature quickly (which also gives you warm air quicker in the morning). Secondly it regulates the speed that the water circulates. If the coolant is circulating too quick then it wont stay in the radiator long enough to be cooled therefore causing the engine to overheat, the air con turns on a thermostatic fan to increase airflow so the cooling will improve that's why the temperature "returns to normal". You will find on colder days the temperature will drop "lower than normal" with the a/c on. It's worthwhile changing the thermostat as you will find that your car will actually run a bit more efficient on fuel. Also check that the fluid in the cooling system is proper engine coolant, that will help considerably with the proper cooling of the engine not to mention reduce corrosion of parts in the system which can be very expensive to replace.
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Apr 04, 2014 • 2002 Toyota Celica
0helpful
1answer

I over heated,the serpentine belt snapped. Opened the hood to find steam rapidly coming out of both the antifreeze and out of the engine right by the head gasket. It wasn't smoke not blue or black jus
Perform a compression test on your cylinders. One unfortunate result of overheating is the blown head gasket. Without compression your motor will not run. Tester are not super expensive or some stores will lend tools.
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Jul 09, 2013 • Cars & Trucks
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1answer

I have a 99' Durango in which my serpentine belt
I would not drive the car at all, except to a shop to have the leak fixed, the car checked out good to see if the overheating is stopped, and if the fix also corrected the serpentine belt problem-sounds like a seized pulley and it may be the water pump pulley. Overheating is one of the major causes of early engine failure. Don't put it off, or you'll be overheating from a major repair bill!
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Jun 12, 2012 • Cars & Trucks
4helpful
2answers

How do i change the timing chain
Disconnect the negative battery cable with a ratchet and socket, read the serpentine belt routing diagram located under the hood, then release the serpentine belt tensioner using a ratchet and socket, and carefully remove the serpentine belt from all of the pulleys with your hands. 2 Install the new belt according the routing diagram, then ease the belt onto the belt tensioner pulley and tighten the tensioner with a ratchet and socket.3 Reconnect the battery cable and start the car to test the belt.
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    Oct 25, 2011 • 1995 Pontiac Sunfire
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    About six weeks ago my 93 Accord engine heat gauge went to the top. I took it to a shop and they replaced the thermostat and radiator. It ran for a while and today the engine heat gauge again went to the...
    did you over heat the second time? or did the gauge go up with no over heat? alot of time in my expeirence severe over heat can destroy the temprature sending unit, causing false readings on your dashboard. The sending unit is housed on your thermostat housing and is simple to install and affordable. if it did over heat take it to another shop fpr second opinon (Estimates are usually free) cuase I could be typing awhile trying to explain, lol
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    Mar 25, 2011 • 1993 Honda Accord
    3helpful
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    Change serpentine belt on 06 sienna
    1. 1 Check to ensure the Sienna's engine is cold, then make sure the Sienna is in park, the ignition is in the off position and the key is removed from the ignition to prevent any possibility of the engine engaging during the serpentine belt replacement.
    2. 2 Open the hood and locate the serpentine belt routing diagram sticker on the side of the engine casing. Study it for a moment before removing the existing belt. It is essential the new belt be installed exactly as the diagram indicates.
    3. 3 Find the tensioner pulley, the main pulley that controls the serpentine belt, and fit a 1/2-inch socket wrench over the self-tensioner on the outside of the pulley.
    4. 4 Pull the wrench to the left to move the pulley forward, which loosens the belt, then remove the belt.
    5. 5 Compare the old serpentine belt with the new, replacement belt for length, width and number of grooves on the belt's underside. Be certain the replacement belt is the right part.
    6. 6 Fit the new belt on to each pulley according to the serpentine belt routing diagram on the manufacturer's sticker, or according to the drawing made prior to removing the old belt. Fit the new belt on to the tensioner pulley last, again applying pressure on the pulley's self-tensioner with the half-inch socket wrench to loosen the pulley.
    7. 7 Release the pressure on the self tensioner and allow the tensioner pulley to ease back into place, thereby tightening the new serpentine belt with the appropriate tension.
    8. 8 Remove the wrench and close the hood.
    Thank you and good luck,
    Lee
    Read full answer
    Aug 26, 2010 • 2006 Toyota Sienna
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    Car overheated and antifreze was boiling and spewing over until engine cooled. 2004 jeep liberty 2wd. Thanks!
    Need to know what caused the overheating, possible broken serpentine belt, thermostat, water pump, radiator, fan clutch, cooling fan motor. After motor has cooled down fill radiator with water till full, look make sure serpentine belt not broke, start engine run about 5 minutes, turn off, let sit 3 minutes, start engine look at temperture gauge is it over half way of gauge, Do you have a fan blade driven by water pump or electric fans?
    Read full answer
    Feb 10, 2010 • 2004 Jeep Liberty
    0helpful
    1answer

    My montero keeps overheating. I put a new
    These newer engines and air lock when changing the thermostat. Somewhere in the thermostat housing you should see some kind of a plug. You need to do this while engine is cool. Take the cap off the radiator. Remove the plug. You should get air out of the system. Keep letting air out as you put more coolant if needed. When all the air is gone put the plug back in and top off the radiator and you should be good to go.
    Read full answer
    Dec 02, 2009 • Mitsubishi Montero Sport Cars & Trucks
    0helpful
    1answer

    Still want to shoot into a thermal runaway.
    First of try to understand exactly what part you mention exactly how they work or function
    1. please place a new low speed relay as it try to make out thermal heating cool at it's initial 1st stage level of heating so that the temperature remain maintain if thus it reaches the second level of heating then the high speed relay act at that time & the speed of radiator fan increase to get thermal heating in control.
    2. the thermostat regulate the heating temperature of the engine it senses the temperature & signal to the relay the relay then react according to the temperature level of engine at low heating it operate the low speed relay & high temperature it signal to high speed relay so the engine temperature does not rise to extended level of heating or overheating.
    3. see for thermostat valve is failure if that so replace it new sometime most of the mechanic change it or cancel it so that the temperature does not rise as this thermostat help engine maintain it's ideal temperature which is required by the engine for regular or good working even at extreme climatic condition.
    4. Do check for every tensioner or Ideal Bearing as far consider on the No. of miles or Km the vehicle has run according to us the tensioner or ideal bearing are suppose to be replace at an interval of 30000 to 35000 Km. but this replacement include both Engine timing belt & tensioner & ideal tensioner bearing.
    5. A water pump flow depend on the tension of the drive belt some vehicle come with water pump which drive on inner timing belt tension & some on the fan belt or external tension belt of engine.
    for further more FAQ do send in or place your problem we will sort it out till then have a safe drive & happy motoring from siddhanth.....!
    Read full answer
    Sep 29, 2009 • 2003 Chrysler PT Cruiser
    0helpful
    2answers

    My upper radiater hose blew n engine over heated. I installed a new hose n replaced fluids. engine overheated again. did not blow though
    check the serpentine belt for slipping, the clutch fan, the thermostat(might be stuck closed) or maybe it is a circulation issue, you can check the radiator and radiator cap for defects and sediment buildup.
    you might be able to confirm circulation problem if you turn heat on and it doesn't overheat.
    Read full answer
    Apr 30, 2009 • 2000 Dodge Durango
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