My 1982 owner's manual lists the B21F MPG. Is this always the same as the LH-Jetronic 1.0 version (as opposed to the K-Jetronic versions) for 1982?

My 1982 245 has a faded emissions sticker that still shows the ignition timing of 12 degrees BTDC, which matches that of the B21F MPG listing in the manual (other B21F engines list 8 degrees BTDC in the manual). The VIN has an engine code that matches the LH-Jetronic 1.0 version of the B21F, according to a Volvo VIN decoder. So that would imply that, at least in this car, the engine is a B21F that is both MPG and LH-Jetronic 1.0. The question is, are there any 1982 MPG K-Jetronic, or 1982 LH-Jetronic 1.0 that are not MPG? Or does MPG = LH-Jetronic 1.0?

And is MPG supposed to mean better fuel economy than otherwise?

My 1982 owner's manual lists the B21F MPG. Is this always the same as the LH-Jetronic 1.0 version (as opposed to the K-Jetronic versions) for 1982?

As far as I know, the "MPG" is associated with the Ignition system, usually referred to as the "Volvo/Chrysler" system. The ICU is a box just ahead of the washer reservoir on the right side. The ICU has a vacuum line connection at the bottom, front.

And I believe the MPG is always used with LH FI, the 1.0 in your case. But as I write this, I seem to recall that Mario (a frequent poster) has an '82 MPG w/Kjet??? Maybe he will ring in on this.

The early versions of the V/C ignition used Chrysler distributors, which had a white cap held on with screws. Later ones used Bosch distributors. The Chryslers can be replaced by the Bosch unit by adapting a rectangular Bosch harness plug to replace the round Chrysler plug. Your Ignition may not have the Knock Sensor, which was added in '83 I think.


The V/C ignition is reliable, and was used up thru '88. But the early ones can, with age, sometimes fail to deliver full voltage to the coil primary side. This is due to a round-about path from Ign. Switch to coil, which can be easily bypassed for a more direct route.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.

And I believe the MPG is always used with LH FI, the 1.0 in your case. But as I write this, I seem to recall that Mario (a frequent poster) has an '82 MPG w/Kjet??? Maybe he will ring in on this.

I was wrong. Some '82s did have K-ket with the Volvo/chrysler MPG ignition.

I dug back in my posts and found one from Mario that confirms this.


--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.

Hello,

Yes Bruce my 82 MPG is a K-jet and does use the Chrysler ignition. I belive that some of the California models used LH injection in 82. Most of the people I have come into contact with have K-jets in their 82's. The 82 LH models are not that common and the AMM/ECU are hard to come by.

Mario
--
'I've always been crazy, but it's kept me from going insane' Waylon Jennings