need new AMM also which fuel system LH2.2 or LH2.4?

Hi there.

I am trying to identify the fuel system that is installed on my car.

I am going to replace the AMM on my car (it has failed to work). The
previous owner replaced the original AMM (Air Mass Meter/Air Flow
Meter) with one from a salvage yard, I think he put in the wrong one.

My car is a 1988 Volvo 240 wagon.

Are there any identifying marks on the car that would identify whether
or not I had LH2.2 or LH2.4 fuel injection?

It seems that each (LH2.2 and 2.4) have their own specific AMM. The
AMM I removed from the car has a serial number that ends in 016. 016
seems to belong to 2.4 injection, but that injection system seems to
belong to 1989 and newer cars. My detective work tells me my car
should have 2.2 fuel injection which uses the 007 AMM (serial number
007) as my car would be part of the 1985 to 1988 production.

I understand that it is very important to install the correct serial
number AMM on the car. That said, what would happen if I installed the
wrong one? The is out of service now, and up til now the mileage and
performance was not as great as it could have been. I have a feeling
that I didn't have the part (correct) in the first place. Since I have
to special order the new AMM anyway, I want to make sure I am getting
what I need. (it's really going to be unfortunate if I order
something, wait the two weeks to get it, and it's wrong).

Can someone help me identify my cars fuel system?
Tell me what to expect if I install the wrong Air Mass Meter?
Share any other interesting stuff I should know. I've been working on
old Volvo's for some time now, but this car is my very first (ever) car
with fuel injection (I'm a long way from my much missed 1979 with the
good old b21a (just gave the car away last year, should've never done
that!)).

Thanks, I really appreciate the help.

Chris Mears
Charlottetown, PEI
1988 Volvo 245 "Daisy"

 

I don't know specific identification markings or anything like that,
but my '88 (US spec, not Canadian) 244DL has LH Jetronic 2.2 in it. I
can check the AMM part # if you want.

 

Yeah, turns out my AMM part # ends in 007. So it looks like someone did
install the wrong AMM type for your car, as I have no problems with
mine.

hth drew

 

The 2.2 meter (007) has a bung with an aluminum press fit removeable
plug (drill two 1/8" holes and pull out with needle nose pliers)over the
idle mixture adjusting screw. On the 2.4 meter (016) there is no
provision for mixture adjustment.

The 2.2 system may have a thumb wheel idle trim screw on the throttle
housing. The 2.4 system does not.

Check both the Volvo and Bosch part number on the fuel control unit
behind the right side outer kick panel and report back or call a dealer
to determine the application of the unit. Also post the VIN number to
determine the true year model of the car. The last letter in the VIN
should be K=1989 L=1990.

Bob

 

So it's really starting to sound like the previous owner installed the
wrong AMM. Cool as I think I may have found a decent used one in the
salvage yard (I am assuming that both AMM's (007 and 016) fit in the
same diameter intake hose(?)

I have the thumb screw adjuster on the throttle body housing. By the
way, turning this screw really doesn't seem to have any impact on the
car's idle. Should it?

Most suppliers I talk to only show the 007 part as installed in my car,
what are the chances that the 016 was installed originally at the
factory.

Chris

 

If the throttle switch and throttle plate are set correctly it should
have some impact, yes.

Pretty slim.

Bob

 

So armed with this new knowledge, I am going to go ahead and order a
007 AMM from my suppliers and hope for the best. I need the car back
in service, so I will be ordering overnight fast.

What would happen to the car if I installed the wrong AMM anyway? I'm
thinking the effect would be very similar to that of running with a
dead AMM. Could it damage the ECU?

Thanks
Chris

 

Chris:

Call the parts Dept at your local Volvo dealer, give them the vin # of
your car and ask them which Bosch number is correct.

Even on the 1993 240 DL there were two different AMM's used. One is
the 007 and the other is the 016.

Keep in mind if you order onle online or locally electrical parts or
often either not returnable or if they can be returned will have a
hefty "restocking fee."

Good Luck

Doc

 

I think you should remove the trim panel in the right side footwell, and
check the number on the fuel injection ECU.
If you post the bosch number like 0 280 000 561 in the newsgroup, you could
get teh answer you are looking for.

Regards

Per Hauge

 

I think you're lucky you need the 007. I was pricing AMMs on eBay last
week and noticed that the 007 seems to be readily available and cheap.
The 016 was much more money and they didn't seem to be offered up for
sale nearly as often.