After using a '87 K10042 speedo in my '89 244 for about a year, I put my original back in after repairing it (needle, gears, face). During the timeframe of using the '87 unit, my cruise control stopped working. I had my first opportunity to test out the cruise again. Needless to say, it worked great.

When was the first year that the 1981+ 240's had the option for cruise control?

It wouldn't make any sense if Volvo decided to stick a different speedohead in a car that didn't have cruise control. But if the option wasn't available until 1988 or later, than perhaps this assumption is true based on my experience?

FYI, the '87 speedo worked great but the odometer didn't. If CC was available in '86+ then it's gotta either be something wrong in the '87 speedohead or it's somehow tied into the odometer (nah...)??

Thoughts??
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Regards,
Eric Staufer,
'89 244DL 117k (now with a fixed odometer!) :-)

The cruise control didn't work because the speedo was partly broken. Fry the electronics in a working speedo by sending a power spike into the cruise output and I bet the odometer stops working before the speedo needle does. That's because the odometer and cruise/ECU output signals are closely related to each other - the speedo needle signal is something completely different.

CC was available from the early eighties or even late seventies (262C, 264?) but those units were completely different designs, using a separate pickup at the speedo wire connection behind the instrument, a Dana ECU and a bulky vacuum servo. Your design was introduced in 1986 when the electronic speedometer simplified things considerably. All electronic speedos have got the cruise/ECU output.

/Martin
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65' 121, 73' 165

Good theory, but it does not correlate with 240 cruise type changes. The 90-on cars have the nicest cruise, with an electric vacuum pump all wiring is built into the cars. Prior to that the 86-89 cruise is all the same with the engine bay vacuum canister taking vacuum from the intake. Those cars need a wire plugged in near the speedo. Before 86 there was yet another cruise system. Is it possible you fogot the wire when the substitute speedo went in and then got it right when you put the original back?

The orange cruise wire was plugged in with the old speedo. I even tried both spade connectors, too. Strange, eh?
--
Regards,
Eric Staufer,
'89 244DL 117k (now with a fixed odometer!) :-)

The orange cruise wire was plugged in with the old speedo. I even tried both spade connectors, too. Strange, eh?
--
Regards,
Eric Staufer,
'89 244DL 117k (now with a fixed odometer!) :-)