1998 S70 " MAP Sensor Linear " or " Pressure Sensor Linear

aswresm · Post by **aswresm** » 16 Nov 2014, 09:08

Need some help please on the location of this ac High pressure switch...Any idea how to replace that?...Is it a simple Unscrew ?.....Please advice
Here is a link to the part :
http://www.carid.com/1998-volvo-s70-air ... 71456.html

Post by **scot850** » 16 Nov 2014, 12:15

I believe this is on the steel pipe running back to the bulkhead on the RH side oh the car. If the system is already de-gassed, then it is easy to replace, but I would take it to an A/C repair shop and get them to fit the part and re-gas. Check on one of the on-line Volvo dealer web sites as they have good parts break downs which will help you find the location.

Neil.

aswresm · Post by **aswresm** » 16 Nov 2014, 14:07

scot850 wrote:I believe this is on the steel pipe running back to the bulkhead on the RH side oh the car. If the system is already de-gassed, then it is easy to replace, but I would take it to an A/C repair shop and get them to fit the part and re-gas. Check on one of the on-line Volvo dealer web sites as they have good parts break downs which will help you find the location.

Neil.

Hey Neil is it just a simple unscrew .....I know that changing this switch would not affect the gas status, Is that right?....
Thank you!!

aswresm · Post by **aswresm** » 16 Nov 2014, 14:08

Also as the part website says it is located behind the passenger headlight.

Post by **jimmy57** » 16 Nov 2014, 14:15

P80 is schrader valve fitting mounted on the high side line. The ones on receiver/drier on integrated receiver driver on condenser are not on schrader valves and must be evacuated or it is dangerous to remove.

aswresm · Post by **aswresm** » 16 Nov 2014, 14:37

jimmy57 wrote:P80 is schrader valve fitting mounted on the high side line. The ones on receiver/drier on integrated receiver driver on condenser are not on schrader valves and must be evacuated or it is dangerous to remove.

Thanks Jimmy for your reply....Just to make sure , The high pressure switch located right behind the passenger head light is screwed over a schrader valve, so I guess there would not be a problem to remove it and replace it ?...Am I correct!!...Please refer to the attached picture.
Thank you!!

Post by **scot850** » 16 Nov 2014, 16:12

If I read what jimmy57 says, you are 100% off on your assumption. It reads to me that it is NOT on a schrader valve so system has to be evacuated first. Appreciate not everyone can afford to do it, but like I said earlier, I would take the car to a pro and get them to fit your part and re-pressurise your a/c. Then they can re-check your system to make sure all is well.

Neil.

aswresm · Post by **aswresm** » 16 Nov 2014, 19:11

@Scot850 if you took sometime to look at the picture above you will see that it is referring to the HIGH PRESSURE SWITCH MOUNTED ON A SCHRADER VALVE...... So I am 100% sure of my assumption...

Post by **scot850** » 17 Nov 2014, 12:14

Glad I was wrong on that one! Hopefully replacement is straight forward and all is good!

Neil.

aswresm · Post by **aswresm** » 17 Nov 2014, 12:20

Thanks Neil...I appreciate your help though!!