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Diagram cooling heating system

Its not over heating but when i stop coolant comes out

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: heating system

heater core has a restriction inside of it replace heater core and it will heat all of the time

Posted on May 19, 2009

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SOURCE: Wiring Diagram of the heating and cooling

Hi, the correct diagram depends on whether you have automatic or manual controls. There are additional diagrams available with higher resolution if you go to and sign up for a free account. The diagrams are here:

Please let me know if you have questions about troubleshooting the system.

automatic controls:

manual controls:

Posted on Jun 01, 2011

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SOURCE: need a diagram for 97 6 cyl pontiac grand am heating cooling system hoses

We do not have these diagrams, they are located in the factory service manuals which are copyrighted by GM.

Posted on Aug 26, 2012

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SOURCE: 1998 plymouth grand voyager coolant system diagram


Posted on Sep 26, 2012

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I have a 08 g6 3.5 when I slow down or come to a stop my heat gets cool but when I'm driving it's warm. Temp gauge runs fine no issues with over heating.

Sounds like not enough coolant in your system. Double check your fluid level if low, add premixed antifreeze. If low you may have some coolant system leaks.

Feb 27, 2015 | Cars & Trucks

1 Answer

Need a diagram for 97 6 cyl pontiac grand am heating cooling system hoses

We do not have these diagrams, they are located in the factory service manuals which are copyrighted by GM.

Aug 26, 2012 | Pontiac Grand Am Cars & Trucks

1 Answer

The diagram in my haynes manual does not show some parts that are in my 2001 jetta tdi 1.9 turbo. i ran a diognostic and it says glow plug curcuit a malfunction, i changed the plugs and tested the coolant...

In addition to the 4 primary glow plugs, the cooling system also has 3 Coolant Glow Plugs to help provide extra heat to the cooling system in order to warm-up the vehicle's interior more quickly, and enhance overall engine warm-up time. (Example - Some Mercedes diesel engines use electrical heaters in the cabin because their engine is so thermally efficient.)
Likewise, this auxiliary source of heat from the 3 Coolant Glow Plugs is necessary because of the VW 1.9 TDI engines outstanding efficiency, which wastes very little heat.

The 3 Auxiliary Coolant Glow Plugs are located at the end of the aluminum cylinder head (in a protruding flange) directly below the vacuum (brake booster) pump, which also connects to a coolant hose.

The 3 Auxiliary Coolant Glow Plugs use two (underhood) relays which are monitored and controlled by the ECU. During a cold start, the vehicle's interior temperature selector switch helps the ECU choose one of three modes depending on the amount of heat required to warm-up the coolant.

For example, Coolant Glow Plug #1 can be selected to operate all by itself, or #2 and #3 can operate together as a two-some, or lastly, all three glow plugs can form a triple source of heat for maximum enhancement of engine warm-up time.

After the engine is completely warmed up and the thermostat is open, the Coolant Glow Plugs normally shut-off and remain off unless the (thermally efficent) engine cools down sufficiently to have the computer signal them to come back on to keep the engine and cabin air warm. Extensive idling times at stop lights or in the driveway are scenarios where these glow plugs are most likely to recycle on and off.

In conclusion, the period of Preglow and Afterglow is determined by the engine's coolant temperature (during a cold or hot start), which helps the ECU select a predetermined time-cycle for the combustion chamber and / or Auxiliary Coolant Glow Plugs to follow.

Finally, one myth that needs to be immediately debunked, is the belief that the TDI's advanced Glow Plug System is linked to the opening of the driver's side door, which is false! It is also noteworthy to mention that some earlier VW diesel glow plug systems were operated in this manner, but not so with the advanced VW Jetta 1.9 TDI engine.

Feb 23, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

Problem is with temperature control. Even on a very cold day the needle goes up to the top and red light comes on. Had the car to the dealer and he replaced cross-over pipes, thermostat, and and ...

It may be anything. The good news is that if the cylinder head gasket is blownup, then the temperature goes up and never comes down. If you wil not correct the coolant temperature soon, a bloun gasket will complicate the situation. Sounds like a poor circulation from engine to radiator. The cooling process of a car involves:
1 - The heat generator - ENGINE
2 - The cooling device RADIATOR.
Coolant transfer the heat from Engine to the Radiator. From the radiator the sream of air absorb the heat from the radiator and the engine cools down. If the system has no leak, there are twoo factors that affect cooling.
1- Circulation of coolant from Engine to the Radiator.
2 - Circulation of the air through the radiator.
You have to make that you have a good circulation from engine to radiator.
The cause might be:
A bad water, pump, thermostat, or AIR POCKETS in the cooling system.
To check and normalize this you have to:
Rise up the front of engine on oil change ramps.
Top the cooling system with coolant 50/50.
Open the bleedin nipple of cooling system, and add coolant till you see coolant of the blleding nipple.
Start the engine and open the ait blleding screw. If you will se a stream of coolant going up, then you have two good news. No air pockets in the cooling system, and a good water pump. geea start leaking.
Do not run engine for more than 5 minutes. Stop the engine.
The next day with cool endine repeat again the same process.
Make sure that Radiator is free from debris. It is a good idea to clean it up. A water hose can help.

Nov 01, 2010 | 2002 Oldsmobile Intrigue

1 Answer

Heat stops working. No heat from heater on my 1999 S10 V6.. I have "burped the cooling system after which I get plenty of heat but eventually it stop working after driving 2-3 days. Should the heater...

Air is getting into the system. Tighten all hoses and do not overlook the hose going to the expansion tank. When car cools that hose sucks water back into system but if not tight it will suck in air. Could be why you constantly have to "burp" the system.

Jun 13, 2017 | 1999 Chevrolet S-10 Pickup

2 Answers

My heater doesn't come on for my 1997 plymouth neon, could it be a fuse?

There are many many reasons for car heater not coming ON or not working properly:-- i will explain you the procedure to check this possibilities Your car's heater is a life saver in cold weather. Before attempting to repair your car’s heater, you should understand how your car’s heater system works. First, on this page is an explanation of how your car’s heater system functions, further down the page are some pointers on heater system trouble-shooting. To warm the passenger cabin of your car, your car’s heating system makes use of excess heat from the engine’s internal combustion process. A car’s engine, in fact, when in operation produces so much excess heat that if the excess heat is not removed, it would destroy the engine. It is your car’s cooling system that removes that dangerous excess heat. Some of an engine’s excess heat is released through the exhaust. Most of an engine’s excess heat is absorbed by a circulating liquid coolant, which is a mix of water and antifreeze.

The heated liquid coolant is carried from the engine through hoses to the radiator, which transfers the heat from the coolant to the outside air. That heat transfer lowers the temperature of the liquid coolant, which is then circulated back to the engine to absorb excess heat again. Whereas the radiator is located at your car’s front grill, the unit that transfers heat to the passenger cabin is located inside the dashboard. This unit is something of a mini-radiator and is referred to as the heater core. Heated liquid coolant circulates through tubes in the heater core and a heater fan blowing across those tubes, as well as through little fins encasing the tubes, directs warm air through heating vents into your car’s passenger cabin. Because your car’s heating system works off of its cooling system, heating system malfunctions are often caused by problems in the cooling system.
The heater core in your car is similar to the radiator in the front of your car; in fact it looks like a small radiator. The difference is the heater is mounted inside the car and air is blown through the fins of the core. The heater hosestransfer engine coolant from the engine to the heater core, this allows the heat from the engine coolant to be utilized and warm the passenger compartment. When a heater stops functioning determine what type of failure has occurred to execute a repair. We have listed the most common problems below.

please click on this link directly for more detailed help
check the diagrams and parts in the link to troubleshoot your care heater
This will help. Thanks please keep updated. please do rate the solution positively .thank you for using fixya

Mar 17, 2010 | 1997 Plymouth Neon

1 Answer

No heat changed thermostat flushed engine new coolant

did you release air from cooling system when replacing coolant!! if air is trapped in system it will not heat up proper. turn fan on high heat locate bleeder for cooling system, open bleeder with car running. if there is any air in system you will see it come out of bleeder. keep checking for heat. when you get heat bring coolant to proper level. leave top off of coolant recovery tank while bleeding system. put cap back on when done.

Nov 17, 2009 | 2001 Plymouth Neon

1 Answer

1998 cavalier heats up when idleing. Fan comes on but still heats

Hello senior, whenever the coolant system is opened up there's a possibility you could get air in your system, only way to get it out is by using the bleeder valve, check the coolant temperature sensor it may not be working properly, it tell's the cooling fan when to kick on and off, the condition of the drive belt is also another factor, along with the tensioner and tensioner pulley. it sounds like a problem with the water pump, the cooling fan, or air in your cooling system, to get a good inspection of the water pump fin's you have to remove it.

Apr 03, 2009 | 1998 Chevrolet Cavalier

1 Answer

Heater not working

you more than likely have an air lock in the cooling system you need to bleed the system of air, has the coolant just been replaced?
does the engine fan come on to stop the vehicle overheating?

Nov 23, 2008 | 1997 Saturn SL

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