Quote:
Originally Posted by adamdrives
Is the -117 a known good update for the single relay (post 84.5) cars?
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Yes, the -117 part number replaces -104 and has an updated design that gets rid of some questionable calibration in the 899104 relay that can occasionally cause long crank times for warm starting. The 899117 marked relay is the one you want. It may also have superseded to another one by now, and these markings might not reflect the correct Volvo part number which is usually 7 digits. One of the Volvo numbers you quoted may be the right one. The 89- numbers are probably the numbers of whoever supplies the relay.
I suggest calling your local Volvo dealer and asking them to look up a current part number for you -- they should be able to tell you whatever is the latest and greatest, confirm the numbers you have, and check availability as well. If they say they can get them, then buying one from Tasca will probably be the cheapest way to order one.
If they have difficulty getting them or the price is too steep, you can also use an aftermarket relay made by Huco that is a good quality part and also addresses the warm start issue. They way it does it is by lighting the glow plugs for every start, even a full hot start, rather than just increasing the warm-restart threshold temperature to trigger them as the updated OE relay does while leaving them off for full hot restarts. Arguably the increased usage might marginally decrease plug life, though even that is probably unlikely. The relay is physically a little larger and a tight fit on 1984+ 700 series cars that have additional components mounted adjacent to the relay on that same bracket on the strut tower, but it works. Here is a possible source to get one of those, I haven't bought one in a few years so availability could have changed but they still indicate that they may be able to get them:
http://www.autohausaz.com/search/pro...lay/Controller