Typically, the sensor is inside of a bearing. You replace the bearing. Also suspect are connections. Check those carefully.
SOURCE: Gearbox in a Saab 900 se gone
Labor for a transmission job can approach 15-20 hours at some shops. Figure on an average of $70-100 an hour for labor, and the costs go very high before you even figure in the cost of another transmission. Try and find an independent Euro specialty shop rather than a dealer or corner garage though - they'll have more specific knowledge of European cars than a generic shop will, and they usually are quite a bit less expensive than a dealership.
SOURCE: 1994 saab 900 se replacing timing belt
STEP 1
Remove Air Filter.
STEP 2
Loosen the bolts securing the crankshaft pulley. Remove the load from the
belt tensioner by turning the belt tensioner pulley locking bolt forward in the
car using a 15 mm wrench. Remove the belt from the coolant pump pulley and
slowly release the belt tensioner.
STEP 3
Remove the belt tensioner and remove the steering pump pulley
STEP 4
Remove the water pump pulley use the engine bracket to pry against.
STEP 5
Remove the timing cover and Remove the right-hand front wheel and the cover
in the wheel housing.
STEP 6
Remove the crankshaft pulley (undo the six bolts but do not remove the
centre bolt).
STEP 7
Place the engine top dead center and Zero the engine. The markings on the
camshaft sprockets and timing cover should be in alignment as also should the
marking on the crankshaft. Use locking tools 83 95 006 and KM-800-2 for the
camshaft sprockets and locking tool KM-800-10 for the crankshaft (These tools
can be purchased from Saab (18774177222) or from Baum Tools).
STEP 8
Before removing the toothed belt mark its direction of rotation . To
facilitate refitting the belt can be marked at both the camshaft marking and the
crankshaft marking.
STE
P 9
STEP 10
Fit the toothed belt according to the marked direction of rotation. Use
setting tool 83 95 006 to keep the belt in place and adjust the tensioning
roller loosely by hand to prevent the belt from jumping off. Adjust
counterclockwise. Fit a section of the toothed belt and fit tool 83 93 985 to
measure the belt tension. Loosely tighten the centre bolts of the adjusting
rollers. Adjust the lower adjusting roller counter clockwise to a belt tension
of 275-300 Nm. Turning torque 30 lb.ft ft ******The adjustment of the belt
tension is for preparation ONLY and must not be used as a check when the belt
adjusted for the final time!
STEP 11
Turn the engine over two revolutions until just before the zero mark and
place the locking tool on the crankshaft. Carefully turn the crankshaft in the
direction of engine rotation until the arm rests against the coolant pump's
flange and then tighten the arm. Fit setting tool 8395006 and check that the
markings on the camshaft sprockets are aligned with the markings in the tool.
********Check that the A marking is approximately 2mm above B marking. If the
distance is less readjustment is necessary.
STEP 12
Fit the crankshaft pulley and Tighten to a torque of 15 foot lbs.
STEP 13
Reinstall the inner wheel cover and front right wheel.
STEP 14
Reinstall Timing Cover.
STEP 15
Reinstall the water pump pulley use the engine bracket for leverage.
STEP 16
Reinstall the power steering pulley and tighten to 6 foot lbs.
STEP 17
Reinstall the belt tensioner and tighten to 30 foot lbs.
STEP 18
Remove the belt tensioner load/pressure by turning the belt tensioner pulley
locking bolt forwards in the car using a 15 mm wrench. Install the belt on the
coolant pump pulley. Carefully release the belt tensioner.
STEP 19
Reinstall the Air Cleaner and hoses that accompany
Release the belt tension and remove the toothed belt.
SOURCE: shot timing belt on 95 900 SE Saab
Your post mentions a belt in the title and then a chain in the text. If V-6, it is a belt, if 2.0 turbo, it is a chain. In either case, these are interference engines, meaning that the pistons will make contact with any valves stuck in the open position. Accordingly, there is head work involved when the timing is catastrophically interrupted. A very good repair will involve taking the engine out to remove the cover so that new guides can be installed for the chain and also the head will have to be pulled and some valves replaced. If damage to piston crowns occured, you may need one or two of these. Some shops have figured out how to weasel the engine around to remove the cover without full engine removal, saving some time. I do not think you can get out of this for under $3,000.00, unless you find a cheap used engine and do a simple swap. Even then, it will be close.
SOURCE: Throttle posotion sensor saab 95
NO. replacement is the only option after it is verified by a qualified shop that it is indeed bad.
Testimonial: "thanks i cleaned it and workes ok now so dont need new one"
hope this helps
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