Service
SERVICE - 1 LH Fuel Injection System - Two generations of the LH system are used from M88. LH 2.2 has been fitted to the 9000 from 1986 and is today only used on the Turbo. LH 2.4 is the next generation of the Saab electronic fuel injection and is notable because of its increased self-diagnostic capabilities. LH 2.4 is fitted to 9000S models.
Retorquing Cylinder Head - Do not retorque the cylinder head on any 1988 9000 models at the 1000 Mile Break-In Service.
A new cylinder head gasket has been introduced that makes retorquing unnecessary. The same gasket is also available in the spare parts system and can be used on earlier cars. See also S.I. 09/87-995.
ABS SYSTEM TESTER COMPONENTS:
ABS System Tester - During early November a new hand-held ABS diagnostic electronic tester will be distributed. The tester will allow the technician to dynamically test the ABS electrical system, all wheel sensors and make a check of the valve system in the main pump. This tool has been designated as a required special tool.
The ABS tester will be a part of the Specification Update Program that will require your dealership to register the tester with Saab-Scania of America. This will ensure enrollment in the program and will consist of periodic software updates as they become available.
LH Fuel System Tester - About December a hand-held LH Fuel System Tester, similar in concept to the ABS tester, will be distributed. This tool has also been designated a required special tool and will be automatically shipped. Your dealership must also register this tester with Saab to ensure enrollment in the Specification Update Program.
The LH Tester connects between the wiring harness and the ECU for the fuel system. It will test such items as AIC pulse ratio, opening duration across the injection valves, engine sensors and the entire wiring harness for the fuel system. Both the LH 2.2 and the new LH 2.4 systems may be tested.
The LH System Tester may also be used to adjust the idle speed on LH 2.2 equipped cars.
Setting Idle Speed:
Idle Speed Adjustment - A new procedure for setting the idle speed on LH 2.2 fuel systems has been introduced. The new procedure uses an inductive tach/dwell meter or the LH System Tester to monitor the pulse ratio of the AIC valve. See the "NEWS" Book or the PDI and Break-In Service Manual for full instructions. A handy plastic-coated card is also being produced which will be available at the Saab Technical Training Centers.
CHARCOAL CANISTER WITH ELECTRICALLY OPERATED PURGE VALVE (SEE ARROW).:
Evaporative Emission Control System - An electrically switched valve replaces the vacuum operated purge valve at the charcoal canister on 9000S models (equipped with new LH 2.4 Fuel System). The switch and hoses are to be inspected at the same intervals that you would check the vacuum type valve (at 60,000 miles or 60 months).
Spark Plugs - Spark plugs may no longer be inspected at mileage intervals of 15,000 during the first 50,000 miles, according to EPA regulations. Inspection and replacement may only take place at 30,000 miles despite a vehicle's possible severe usage. For this reason it becomes increasingly more important to interview your customer to ensure that the correct spark plug is being used in the car.
Owner advice has been expanded in the vehicle Owner's Manual concerning spark plug use in CITY DRIVING and NORMAL DRIVING. Turbos operated exclusively in-town may require the spark plug listed for CITY DRIVING. Be prepared to counsel your customers. Page 61 of the 1988 9000 Owner's Manual (P/N 04-00-820) contains the following note:
NOTE
In conditions other than normal driving, Turbo models may require a different spark plug than is fitted as standard equipment. Extensive idling, stop-and-go driving and operation in cold climates over repeated short trips without sufficient engine warm-up may cause Turbos to require the spark plug listed for City Driving in the Specification section of this book. Discuss this with your dealer.
Warranties & Service Records Booklet - As with earlier years, all scheduled maintenance (including POI & the Break-In Service) is accompanied by a handy checklist which can be checked off and stored in the dealership file. A stub stays with the booklet and must be stamped with your dealer stamp for the customer's records. On the inside front cover there are new spaces to indicate extended service contract coverage and speedometer replacement, if applicable.