Ever figure this out?

I have had a similar issue with my 93 245.

Mine just lost power under load. Turned out that my air box thermostat was stuck open. Let in all the hot air from exhaust heater hose through the intake. That $10 item killed my expensive MAF.

Mine does 0-60 in 15-19 seconds depending on the wind.
Thank goodness for my lead foot and steady nerves.

Thinking of hollowing out my cat. Maybe it's clogged. CT has >25 year emissions exemption.


Should we set up a stock 240 drag race event?

Hello,

I'm hoping we talking about a car that's using a LH system and not a K-Jet system. I know that the K-Jet was dropped before 84 and I get fuzzy before that. The K-Jet Turbo was held over from around late 82. I know this cause I have been bit before for not knowing. The clank in that armor is depending what country.

The first thing that come to mind under acceleration is a richer mixture is needed and that also means volume.
On the LH, that would be the vacuum controlled fuel pressure regulators, not shut down on returning fuel to the tank.
I do not know what the 83 has as a FPR but I suspect it's close to the 84 year one. This might be worth researching, if there has not been an upgrade made between them.

The 84 model is different than the later cars and the later cars ran better but there were improvements.
With that said the B230 does breathe differently than a B23, so that tells me they had fueling issues as I cannot see great differences mechanically.

The injectors orifices could vary too between 83-84 and for sure the ECU's of LH 1.0 over 2.0 and the 85's moving towards LH 2.4 refinements.

The B23 appears to me to be a more of a low end torque motor. I feel it might work better in a small pickup truck of about the same weight as the sedan or less.
The motor is Not as quick to rev up but I'm judging this with out knowing the ratios between my 84 sedan and a my 86 wagon.
I have to compare those two to my nineties LH sedans still running LH 2.4's injection.

These year cars were built heavier like tanks and are called tanks by many owners. The car rides solid because of it and their larger steering wheels help with those made without power steering.
Swedish people are closer to being bigger like Americans. Volvo's are truly the Swedish family and nicknamed "A Tractor" car and built against their Moose and Winters. The climate and mountains are a major reason that their A/C's were under capacity when compared to stateside units driven by V-8's.
So putting it this way, having a speedster, is not in its character when aligned with a safety consensus in the homeland or like minded European families world wide back then.
Remember Ford made the Granada's with a carbureted 302 cid, glitzy trim and that's about all!
If you find One, not in a club, still running, it is probably faster, not getting 27 MPG but smoking and leaking!

You gotta cut the cars some slack for their longevity!

Phil

How did the spark plugs look when you removed them? I just pulled the plugs from a '92 than were badly worn - but clean.

How did the oil look?

We had a '90 744 TI(150K) that had three cylinders with poor compression - after 30K with 3333K oil changes (3333K so that 10K services lined up) the compression came up in those cylinders.

Your car's computer may have accommodated older components and may need time to adapt to the new parts.

I have also had a tune-up sharpen up a bit after a thousand miles or so in older cars.

Drive the car for a couple of thousand miles or so and check it again before you throw more parts at it.

If the results are the same then, have an experienced Volvo tech look at it.

One thing that you might do, is to unplug any connectors that you can, clean them, add dielectric grease, and zip tie any that you can. I did one per week so that I know where to look if there was a problem.

Cleaning grounds is a good idea also.

Thanks for all of the good ideas.

I discovered something this morning that I had not noticed before: rowing up through the gears it will not rev over about 4,200-4,300 rpm. In my driveway, in neutral, it hits 5,000 but doesn't sound quite right.

This car has the crappy Chrysler ignition and I wonder if the timing is not advancing correctly. How do I check this while driving?

What size wheels and tires?

Larger diameter will seem objectively slower.

Also I don't remember if there were vast difference between '83 and '84, but I do remember my old '79 with lambda sond did not make much more than 100 ponies, a b230 by comparison at 114 hp seems like a rocket with a decent cam

I was going to suggest that perhaps the timing belt was off a tooth, but as I read further I saw that you had checked that... and you are sure?

How about ignition timing? I am not familiar with the b23f engines or how sophisticated the ECU is but I would guess they can not adjust the timing on their own as the later b230f engines can.

Randy

I'm not surprised that you need to downshift going up hills on the highway. That seems "normal" for a stock 200 series of any year.

The loss of power may be due to loss of motor compression. ???

Maybe have the injectors cleaned/balanced. That should make some difference. Plus checking the fuel pressure and fuel delivery system.

Valve settings. Are the valves noisy? Sloppy guides?

hi cd- mine a 92 245 w/ 3 pedals is the same. runs smooth, good mpg. but is notoriously slow as hell. even with m47 and 3 pedals. so bad that i regularly get cussed and foul hand gestures at stop light launches and acceleration from turns. one crumb even said something about the 245's mutha. from what ive been told by my friends and enemies in the brick culture, the 240s had 2 types of gas 4 cyl engines. mine has dished pistons(non interference ) to avoid a destroyed engine if the timing belt breaks. this is common but slow. however some 240s (ive heard with the turbo charger)got the flat pistons which makes it an interference engine. this model which apparently you have is supposed to be peppier and faster.btw only known cure for the punks who trail you and cuss is a rear mounted oil to road discharge pipe like luke doolan had on his 50 ford coupe in thunder road.you might be too young to remember that . best regards oldduke