Could someone tell which LH system I have on my 1991 745 Turbo?
Do I have LH 2.2 or LH 2.4?
PS. How did you guys find out? Is it part of my VIN code?

I thank you in advance for your replies.
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91 Volvo 745 Turbo, 91 Nissan 300ZX TT, and 01 Volvo S60 2.4T

Heh. I just asked this question less than one week ago.

Here's a good answer I received:

http://www.brickboard.com/RWD/?id=861905
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Norm Cook Vancouver BC; 1989 745T 200,000KM

I forgot to mention that the LH 2.2 doesn't have the self diagnostics connector on the driver's strut tower, while the Bosch 2.4 & Regina both have diagnostics.

Danny Mac

Thanks for the quick and knowledgable reply everyone.
PS. I too did a "LH 2.4 ECU" search before posting this question and the search engine came back with "error." Thus I needed to post.
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91 Volvo 745 Turbo, 91 Nissan 300ZX TT, and 01 Volvo S60 2.4T

Volvo stopped using the LH 2.2 and started using the 2.4 in 1988. Yours is most likely the Bosch 2.4, but I think it could be the Regina system also. The dead giveaway is the shape & location of the ignition coil. Bosch uses a cylindrical coil on the passenger side while the Regina is a square coil on the driver's side. Hope this helps!

Danny Mac

Yeah, Bosch 2.2 uses ECU 541/AMM 007 and 2.4 uses 563/AMM 016, but certainly by 92 is was 2.4. Were Bendix systems used in turbo cars?

Aren't bendix the brake system?
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'Where's your common sense?' 'It left me when I was 5' http://members.sounddomain.com/ladeadhead