Question about 2000 Volvo S40

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My volvo heater core was bad and bypassed so i got a new one un bypassed it put new hoses on it it ran for twenty minutes or so i went to drive it and got not even a quarter mile at started to overheat i pulled in a driveway to turn around put it in park it quit running and wont start back up ?/?

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There is air in your water system because of the replacement. Check the service manual how to release the air and should be done when engine is warm to hot. Also switch ON the heater fan to full before bleeding

Posted on Jan 19, 2018

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You most likely had air trapped in the cooling system after the heater core replacement .Its CRITICAL all air is bled out of the cooling system ,and when servicing the cooling system not only is it important to bleed out any and all air .You also need to make sure the cooling system is topped off correctly .Since i don't know the year ,and model Its hard to say why it wont start .Unfortunately when you over heat a car to the point it dies .Then i would be more worried about cracked and or blown head gaskets .All it takes is one time on many cars To overheat it to a point of stalling many times head gaskets crack ,even cylinder heads around the valves can crack .You would be very lucky if no damage resulted from overheating ,which in this case the worst thing to happen or do is keep driving it ESPECIALLY until it stalls You should have pulled over the second you knew it was getting hot and let it cool You may have caused more damage than you realize Like i said if nothing happened from overheating the car then your extremely lucky

Posted on Jan 19, 2018

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Posted on Jan 02, 2017

Anonymous

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SOURCE: Replace Heater Core for Volvo S70 (1999)

It is your heater core. I fixed mine for $144. Ordered the new part on Ebay and followed these instructions http://www.volvospeed.com/vs_forum/index.php?showtopic=9717 It was very simple, I'm a middle age grandmother! The hardest part was cleaning up all the antifreeze. You will need a shopvac, a small one is $20 at WalMart.

Posted on Feb 12, 2009

glennsmart

Glenn Smart

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SOURCE: 1998 Volvo V70 with potential transmission problems?

Yes, it's the 'pnp' switch (also known as the inhibitor switch) which is on the side of the transmission.

I own 2 Volvo 960s (3 litre automatics) which are similar in many respects ... and have that flashing arrow. It's a well known fault and you don't have much to worry about.

Rather than write it all here, you can read what I wrote as an ebay guide about it at http://reviews.ebay.co.uk/Volvo-960-Automatic_W0QQugidZ10000000003233806

I did put similar info on my website at http://www.glennsmart.btinternet.co.uk/volvo960.html with photos

Though the ebay guide is better ...

If you haven't got time to read it ... forget the flashing arrow and put a bit of black tape over it ... My wife's car has (192,000 miles) had that arrow flashing for 3 years. My car (100,000 miles) has had that flashing arrow since I bought it 1 year ago.

I did change the pnp on both cars ... but you also need to have the computer error reset by Volvo to have the light extinguished. Don't worry ... keep driving.

Posted on May 17, 2009

Bob B

  • 272 Answers

SOURCE: 1993 Volvo 850 wont start...help?!

It sounds like your fuel pump is having a problem with getting the last of the fuel from your tank. The pump also has a strainer on it. The unfortunate reality with the 1993 Volvo 850 is that the pump and strainer are located inside of your gas tank. You can look for kinks or pinched areas in the line but from your description it sounds like the pump is going. It has to work much harder when the fuel is low in the tank.

Posted on May 25, 2009

Jonah Oneal

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SOURCE: volvo s70 heater core

FIRST OF ALL YOU NEED A HAYNES OR CHILTON REPAIR MANUAL.IT WILL TELL YOU HOW TO GET TO HEATER CORE.AND YOU NEED TOOL NO.155 8957 DISCONNECT THE HEATER HOSES FROM HEATER CORE.AND YOU NEED A TORX 20 SCREW DRIVER TO REMOVE SOUND PROOFING PANEL TO DASHBOARD SCREWS.

Posted on Oct 31, 2009

rapidvxr

  • 5 Answers

SOURCE: Volvo v50 2.0D with a cold start problem

mines got same problem

Posted on Jan 23, 2010

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1 Answer

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Sounds like you have a bad heater core or you have antifreeze leaking in the into the heater box. Maybe a loose clamp on the bypass hose or maybe you damaged the heater core tube when you installed or removed the bypass hose and now it is not sealing properly.

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How did they bypass it without connecting the two heater core hoses? Without them connecting the vehicle will over heat all the time

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_677dced97ad9bddf

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You will likely need the heater hose junction (Volvo p/n 3522035) since it always leaks and it connects the heater core to the heater hoses on the firewall. The kit usually contains the retaining clips, but not the O-rings to connect to the heater core. You will also need the outlet and inlet hoses (9186847 and 9186849). The length, angles and configuration of these hoses will help you understand their orientation in the engine bay. They can only go on one way. Else, they won't connect to the pipes from the engine.

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I have a 1999 dodge ram with a 460. I have very little heat and there is a mist that comes out of the vents when i turn the heater on. I unhooked the heater hoses and ran water through the core and it ran...


The hoses might have a heater control valve on one ofthem,check and see,an you may have to replace it.Also make sure there is enough coolant in the system,it will not flow threw the heater core if there is not enough coolant in the system,the mist could be the hole in the heater core.

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Too much blockage in heater hoses or heater core.
Bypass valve may be stuck on "bypass" .

1. Remove bypass "Tees", but don't discard.
Replace with straight-through hose fittings.
The core may start leaking under the water pressure since there is no bypass hose.

Once the heater starts working, put Tees back in place. You need bypass protection or the engine will overheat.

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Jun 24, 2009 | 1996 Volvo 960

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The heater core is located on the passenger side of the vehicle. If this has been bypass the core is surely leaking. The heater core pipes should be visible from un der the hood, passenger side of vehicle towards the firewall. keep me posted, and keep an eye on that heater core, there is reason for the prior owner not to have heat.

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1 Answer

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it sounds to me your heater core is plugged. you can try to back flush it,being this vehicle is twenty yaers old,i would say to replace it

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