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Mk2 Polo inlet heater relay


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Hey, I'm trying to work out what's going on with my car's inlet heater.

I think the relay is missing. Is it the socket by the fuse box (passenger side)?

If so, what's the part no/other identifying thingy for the relay, so I can get a new one? I tried getting one off of Heritage but it is the wrong pin out.

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#15 in this picture    @zob Nothing to do with the cabin heating/fan it's the pre-heater in the inlet manifold

https://volkswagen.7zap.com/en/rdw/polo+derby+vento-ind/po/1982-9/9/937-99000/#15   #13 is the "X" contact

Posted Images

Also check the switch in the coolant flow

eg

https://www.mister-auto.co.uk/temperature-switch-intake-manifold-preheating/volkswagen-polo-86c-80-1-3-cat-55hp_v1604_g2136.html

 

(there's an m10x1 version of this on earlier cars before 1989)

Edited by dvderlm
jan 1989 for new switch
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Just a guess, but it is relay J81 in the Haynes book of lies wiring diagrams. It might have 81 written on it in large digits!

Edited by dvderlm
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12 hours ago, anessen said:

Hey, I'm trying to work out what's going on with my car's inlet heater.

I think the relay is missing. Is it the socket by the fuse box (passenger side)?

If so, what's the part no/other identifying thingy for the relay, so I can get a new one? I tried getting one off of Heritage but it is the wrong pin out.

 

Its the same relay that operates a bunch of cabin electrics I think - attached to a plate behind the passenger glovebox in the cabin (next to the indicator relay).

What are the symptoms of your heater problems? No fan speed at all?

 

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nige8021

#15 in this picture 

937524725_Manifoldheatrelay.thumb.png.bd90c2d41bc355385b5436a8e85f4708.png

 

@zob Nothing to do with the cabin heating/fan it's the pre-heater in the inlet manifold

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9 minutes ago, nige8021 said:

 

@zob Nothing to do with the cabin heating/fan it's the pre-heater in the inlet manifold

 

Ahh sorry - misunderstood! 👍

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Great picture. (Though there are two #15 in that picture.)

 

What are 8, 9, 11, 14, 13, 16 relays for?

 

(Are any of them the X-contact relief relay, for example)

 

 

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#6 (next to the fuses) is headlight washer relay.  VAG part 701955200

Edited by dvderlm
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