Do you have any salvage yards near you in Big Oak Flat, CA?

For some reason google image search delivers garbage results. I've posted on this topic someplace and included useful linked images. I'll try Microsoft Bing.

There exist two heat shields for LH-Jetronic equipped 240s.

The earlier style was a once piece sheet steel section with the preheater air hose connector at the center point down.

No images found. I cannot find my earlier post here (?) on the same topic responding to another CA-state resident in a SMOG inspection crisis.

The second version was a two piece heat shield. The top section secures to the four bolt holes in the manifold exterior. With the lower two bolt holes left loose so you slide the lower section with air hose nozzle up and secure the 12 or 12 mm hex head machine bolts.

Newer style for redblock from like 1988-19989 240, 740, and used on 940 normally aspirated (not Turbo).






eBay Auction (Pittsburgh) URL containing these images:
https://www.ebay.com/itm/Volvo-240-Sedan-Exhaust-Manifold-Heat-Shield-90-91-92-93-Used-OEM/233264060467

Another eBay Auction in UK with more images of the same heat shield.
https://www.ebay.co.uk/itm/Volvo-240-Exhaust-Manifold-Heat-Shields-2nd-Hand-Items-/153576358545

The preheater air hose connects to the air hose nozzle on the preheater. However, this type air hose, as used on air-cooled VW, is a spiral wrap hose. That hose actually screws clockwise like normal thread onto the air filter box preheat air inlet under and and access obscured by the water pump fan shroud. You can drop the belly pan and route and connect that way with fan shroud disconnected or removal along with the water pump fan (so you do not risk bumping the radiator and bending the heat sink fins.

The reason why the preheater feature is disconnected, that no one ever mentions, seemingly, is that inside the air filter box, upstream of the air filter, is the cold air / preheated air flap valve. It always fails to hot. And all hot all the time means will cause the MAF / AMM to fail, eventually.

The preheater flap valve is controlled by a thermostat. After market is Borg-Warner Wahler PN 70411. I read replace every one to two years.

Else, as you are in SMOG crazy CA-state, where I resided in Novato and Chico, all state and federal mandated emission controls must appear to work during CA-state SMOG crazy inspection.

You can replace the Wahler PN 70411 thermostat with the heat shield and preheater air restoration.

Some will create an appearance of heat shield and preheater hose connection. Yet the air filter draws no preheated air. All ambient air intake. Saving your AMM / MAF.

If your environment as enduring severe winters, preserving the air intake preheater function is useful.

You may want to ask for the around 2" preheater hose sections that are I guess five feet long. Secure around the route with zip tie straps. As iPd sells it:
https://www.ipdusa.com/products/5448/105054-volvo-pre-heat-hose-aftermarket-946841

You Tube videos detail the Volvo 240 air box preheater flap valve, how it fails, and how to restore and remove it.

https://www.youtube.com/watch?v=osC0FlLuKEY

https://www.youtube.com/watch?v=FGWXXyXD2ME

I found a junkyard Volvo not far from you that may have the parts you need:

PICK-n-PULL, Merced, California 95340
https://row52.com/Vehicle/Index/YV1AX884XH1266194

https://row52.com/
Vehicle search. Choose Volvo. Enter your Zip. Change the miles from 50 to 100. Yet Rancho Cordova south of Sac seems a distance.

Does that help you? Questions?

Thanks.

Debt-Based Fascist-Enduring Buttermilk Boy (has no buttermilk).
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