Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Engine System Identification


MODEL 944 Turbo S:

ENGINE DESIGNATION [1] M44/52
DISPLACEMENT 2.5L (2479cc or 151.3 cu.in.)
CYLINDERS Inline 4
FUEL CONTROL SYSTEM [2] Bosch L-Jetronic
IGNITION SYSTEM [2] Bosch Electronic
COMPUTER SYSTEM Digital Motor Electronics (DME)



[1]= for engine code I.D. see "V.I.N. AND ENGINE CODE IDENTIFICATION" . Application and ID
[2]= Electronically controlled by the Digital Motor Electronics (DME)

Note: The 1988 944 Turbo S cannot be differentiated from the standard 1988 944 Turbo by using the VIN, only the engine code or engine control module part number can be used. The standard 1988 944 Turbo has engine code: M44/51.