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Still No Start on 940 NA.....update...need help with diagnosis 900

Where are the AC Fan and RSR relays located? Once I find them and switch out I think that will determine my next step.

I have the same car, and those relays are no longer identical. The RS relay is hung on a bracket on the right inner fender, jammed up under a wire bundle near the ABS module.

The Fan relay is in front of the battery, below the right headlight. Not similar to the RSR at all.

I would bite the bullet and get the car towed home where I could work comfortably on my own turf.

And I would want to check the fuel pressure before arbitrarily replacing that expensive pump (although with your mileage, it may be going/gone. Word is they don't last as long as Bosch pumps).

Starting a new thread like this, a recap of symptoms and what you've checked would be helpful. Like does the pump run for a second when you turn the key on? That would verify the basic relay operation (but not "running" operation) and the wiring to the pump.

Are the plugs wet or dry right after cranking?

T-belt may have shed some cogs, throwing valves and spark out of sync with pistons. Set crank at 0° and see if Cam sprocket marks agree.

All those parts can't be faulty. I hope you can return the ones that aren't. When the smoke clears (just kidding), post back I'll give you #s for some Volvo "Green Books" you might want to have in place of the Haynes.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.






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