1987 760 sedan with a b230f engine questions

If it is going into limp mode then the computer is reading a fault code (assuming that it is working and is the correct computer). Check (and wiggle) all fuses, then use the OBD socket and read the fault code from socket 2 (Fuel Injection) and then socket 6 (ignition system).

-Place test lead into socket

-Turn on ignition

-Press test button for more than 1 second but less than 3 seconds

-read the binary flashes to read the code: *-------***-------* would be code 1-3-1

-Again, press test button for more than 1 second but less than 3 seconds. WHne the first code appears again there are no more stored codes.

To erase codes:

-First read all codes

-Place lead in socket

-Turn on ignition

-Press test button for at least five seconds and release

-Light should bo on for 3-4 seconds

-Press test button for at least five seconds and light should go out.

-Check for stored code again as outlined above to verify a 1-1-1 codes (no faults)

Be aware that not all faults will cause a "check engine" light to illuminate.

Also be aware that it can be difficult to isolate faults (see my recent thread(s) on my AMM problems.

Good luck~ __ __ Randy & \ \/ /alerie's \__/olvos '90 245 Estate - '93 965 Estate "Shelby" & "Kate"

Um, *I* can see the turbo housing and plumbing under the hood, no? You

*sure* this isn't the B230FT motor still??

K.

Sorry, no ideas about the performance issue(s).....

The eBay link that you provided shows a turbo. The symptoms that you describe are consistent with a blown turbo.

Here's a photo of the engine compartment alone (from the eBay ad):

turbo housing and tubing is clearly visible on the left. AC

Unless it is different from our '85 it has no test socket and no provision for reading codes.

Mike

It appears the turbo has been removed; the duct from the AMM goes right to the intercooler. The rest of it looks like a turbo model, though. I bet the engine is still an FT and the ECU is the original.

Mike

Okay - the symptoms are fairly consistent with a large air leak between the AMM and the throttle body. (I don't know why it would work for 30 seconds - ours sure doesn't under those conditions.) You can remove the duct from the AMM (so it is still connected to the intercooler) and try blowing into it. You should feel a lot of backpressure... very little leakage. If it leaks find out where. Also wash that silly black ring off your face :-) If you don't feel a lot of leakage I fear the AMM may be bad. Wrecking yards are the most affordable source of that.

Disconnecting the AMM should put it in limp-home mode.

Mike

Looks like a poorly done hack to remove the turbo, the intercooler is still in place. You should check the engine to find out if it's the turbo motor or not, if it is slap a turbo in there, makes the car driveable, without it a

760 is a bit of a dog.

Looking closely at the photo it seems as if the inlet hose to the intercooler is not connected.

According to the seller's "check" this is a dual overhead cam 5 cylinder turbo. The interior may be redyed burgundy but the "autocheck" outfit people are maroons. Well, for $400 I guess you get what you pay for. If the underbody stuff is anything like the tires, the car needs an awful lot of work. It could still be a flood damaged car even though an insurance loss wasn't reported.

Bob

That was my first work: coonect that hose, and the problem continues even if I disconnect the AMM. Somewhere I read that with the AMM disconnected it should work in "limp mode" I got it much less than the price I bid for , I could not buy a bycicle for that price. the little bit that works the mechanical seems to be ok There are at least two junkyards where I could go and rip out any part I need for the price of a song.

I d>>> >

Didn't know that Volvo ever sold that combination in the US.

AC

The Volvo 760 introduced in 1982 was a completely new model, was produced with a 4 cyl Turbo, with a V6 engine, and finally 6 cyl Turbo Diesel The Volvo 740 series was introduced in 1984 to North America, 2 years after the Volvo 760 started on the market. The Volvo 740 is always equipped with a 4 cylinder engine, either normally aspirated (B230F) or Turbocharged (B230FT). The Volvo 760 was available with a V6 or 4 cylinder Turbocharged only. Aside from the engine and cosmetic differences, the Volvo 740 and 760 are similar cars and shares the same body, suspension, brakes and more. According to Volvo ads it is more aerodynamic than a Porshe 928, has better automatic climate control system than a Cadillac Seville, outhandles a Jaguar, etc...

Now I know I have to find the computer and wiring harness from a

740gle

That's not correct, it's a 4 cylinder single overhead cam engine, it's what all the 700 series turbos had. My advice is to find a turbo motor from a junkyard and drop that in, it's much easier than trying to swap all the other bits around and the car will work as it was intended to.

I know it sounds like a huge amount of work, but in the 760 it really isn't. There is plenty of room to work, and the engine/tranny comes out with little drama. You should know the turbo ducts are shockingly expensive; the inlet duct is about $200 from Volvo! It also is hard to find in decent condition in a wrecking yard; the bottom turns to mush where the oil collects at the lip of the turbo.

If you find one from an '88 or later, also buy the engine harness. The '87 has the notorious disintegrating insulation unless it has also been changed. The harness comes out easily with the engine, too. Just follow the ends to the large connectors near the battery and the A/C drier.

Mike

The computers are plenty reliable, assuming yours wasn't wet. (It's by the passenger's right foot, on the side.) If it has the turbo ECU I don't know what issues there are in running with a non-turbo engine.

I really like James' idea of putting a turbo engine back in; it puts so many things right again. The engines are pretty bulletproof (mine has never had the head or either manifold off in 230K+ miles and 20 years), so if you find a wreck that looks like body damage or interior condition put it in the bone yard you're in business. If you find one with a serviceable engine harness you can remove the engine and harness intact with the tranny, and drop a new one in within a single day... even for a real slowpoke like me. (You may have noticed the hood will even open straight up!) Nobody makes cars that easy to work on any more.

Mike

Thanks Mike The problem for me is that I don't have a place to do the engine replacement, but I can do the computer/wiring/sensors work in the driveway. reading a little about Volvos I found that the 760 was 6 cylinder or 4 with the turbo and the 740 was 4cylinder without turbo. I will get the computer/wiring/AMM/Hell sensor/etc from a 740 1988 and replace it. all the insulation from the wiring in the engine bay is disolving so I have to replace it anyway if I change the engine or not. Thanks Gilbert

740s were available with a turbo as well, they just didn't have all the interior trimmings of the 760 and not as many options were standard.