Question about 1997 Saab 900

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Check engine light is on in my Saab 1997 900. Reads code #P112

The code reads bank one max valve. What is this and what does this code mean? It has a 2.3 engine non-turbo.

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  • jdanmarjo Feb 08, 2009

    Update: the code is P1124 and the meter says Bank 1 Maximum Additive Adaptation value. Also reads STFT Bank 1. I replaced the Maximum Air flow sensor and the O2 sensor already. Can't afford to take it to a dealer, but I can do the work myself if I knew what the problem was. Can anyone help?

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6 Suggested Answers

Saaboheme
  • 76 Answers

SOURCE: 1993 saab 900 belt diagram

Sorry, I don't have access to a Bentley now. There are 4 belts, 2 for alternator etc, 1 for aircon and 1 for pwr steering.
The power steering belt goes round the power steering pump & crank pulley only.
The paired belts go round crank pulley, alternator and water pump.
The aircon belt goes round crank pulley, aircon compressor and tensioner.
Alternator / water pump pair are closest to the engine.
Power steering is in the middle (with aircon) or closest to the bulkhead (without aircon).
Aircon (if fitted) is closest to the bulkhead.

(1) If you do not have an AC compressor, skip this step and go to step 2. If you dohave one, begin by cutting any cable ties that hold the main wiringharness to the AC hoses. Lift the harness up and over onto the camcover until it's near the PCV valve, and is now out of your way.

All nuts & bolts in this step are 13 mm.

Then, slacken the 2 bolts attaching the AC tensioner pulley mount (athick triangular steel plate) to the head. Use a long box wrench (ringspanner, in Englishicon_cheesygrin.gif ).

Using a deep-wall socket (or an offset ratchet wrench, or plain wrench)on the adjuster nut, back it off until there's no more tension in thebelt (you won't be able to remove the belt yet, though).

Now, remove the upper of the 2 mounting bolts and its washer, and pivot the tensioner down; remove the belt.

Remove the lower bolt, and lift out the tensioner. Look the triangularplate over for cracks, and spin the pulley to see if its bearing issmooth and quiet. (If you find problems, the pulley is about $15 and www.eeuroparts.com sells the entiretensioner assembly for something like $70.) Back off the adjuster nutuntil it's about 1/4" (1/2 cm) from the end of its threaded rod (usevise-grips to clamp the rod's other end onto the triangular plate, orput the whole thing in a vise).

(2) Slacken the bolt and nut holding the power steering pump to thehead and to the RH engine mount, respectively. Slacken the adjuster nut(yes, anotherthreaded-rod type thing) by about 1/2" (1 cm). You can use a normalwrench for this, but it takes forever--so I made a special tool bytaking a cheapo 13 mm open-jaw wrench and bending it to a 45-degreeangle just below the jaws (cut it to length if it's too hard tomaneuver). Loosen the mounting nut until it's almost off (but not completely off,or you'll lose the bolt it screws onto--this bolt was designed to fallout when the nut is removed). Pull the nut end of the threaded rodtowards the firewall to get it of the adjuster fork. Push the pumptowards the engine centerline and pull its belt off (you may need topry with a screwdriver to get it out of the pump pulley completely).

(3) Slacken the 16 mm nut on top of the alternator. Back off the alt.adjuster's 10 mm nut about 1/2" (1 cm)--a ratcheting wrench helps here.(This is the last threaded rod--I promise.) Completely remove the 16 mmnut, and pull the adjuster towards the firewall until it's out of thealt.

Now for the clever part: Cut yourself a wedge from a piece of wood (2 x4 is perfect), with a rise of 3" (8 cm) and a run of about 12" (30 cm).Push the alt. towards the engine, and shove the wedge in between theside of the alt. and the coil-spring tower (master cylinder mountingbracket works, too). Keep pushing the alt. and driving the wedge downuntil the alt. is so close to the engine that it's compressing thelower heater hose.

Pull the outer belt off the alt. pulley. Working from the RH side ofthe car, lift the belt off the water pump pulley and then disengage itfrom the crank pulley. Now, pull the inner belt into the outergroove of the water pump pulley. Go back to the LH side of the car, andmove the inner belt into the alt. pulley's outer groove. Try removingit from this pulley; if too difficult, either wedge the alt. closer tothe engine or try pulling the belt off the water pump pulley from theRH side of the car (a helper is very useful for all this).

(4) Install the new inner belt by fitting it into its groove in thecrank pulley first. Work it into the outer grooves of the alt. andwater pump pulleys, then into the inner ones. Install the outerbelt--again, first onto the crank pulley, then the water pump and alt.pulleys.

Remove wedge. Insert tensioner into alt. making sure the threaded rodsettles into its fork, and refit its 16 mm nut--but don't fully tightenit yet. Tighten 10 mm adjuster nut until belts can be pushed in only1/2" (1 cm) by thumb pressure (applied 1/2 way between water pump andcrank pulleys).

(5) Push PS pump as close to engine centerline as possible, andfinger-tighten its mounting bolt to hold it there. Fit a new beltaround the crank pulley first, then work it into the pump pulley groovefrom the bottom of the pulley until it pops in. You may need to use both hands, and/or carefully pry the belt on with a screwdriver.

Loosen the bolt you just tightened. Pull the pump away from enginecenterline, insert threaded rod into its fork (you may have to back theadjuster nut off some more), tighten the mounting nut (but notcompletely), and screw in the adjuster nut until the belt deflects asdescribed in (4) above.

(6) Start the engine. Blip throttle, watching the belts deflect as theengine speed goes up and down. If the "blur" you see midway down eachbelt is over 1" (2 cm) wide, tighten the belt(s) until it isn't. Tighten the PS pump mounting nut and bolt, and the 16mm nut on the alt.

If your car doesn't have AC, your belt replacement is over!

(7) If you haveAC, reattach the tensioner to the head with the lower bolt only (andleave this bolt finger-tight). Fit the new belt around the crankpulley, then around the compressor pulley and, finally, around thetensioner.

Reinstall the top tensioner bolt and its washer. Be careful and patienthere--you're threading a steel bolt into aluminum, so make sure it goesin straight. You may have to back off the tensioner nut a little. Leavethis bolt finger-tight.

Screw in the adjuster nut to get the deflection as described in (4)above. Start the engine, and blip the throttle. Watch belt's "blur" on LHside of engine. Adjust as in (6). Switch on compressor, and repeat.

If satisfied, tighten the 2 tensioner bolts. Return wiring harness toits original position, and re-secure with cable ties if needed.

Posted on Dec 16, 2008

michigan man
  • 3533 Answers

SOURCE: Need a maintnence/Owners manual for 1989 SAAB 900 turbo...Help?!

for owners manuals online: www.edmonds.com

Posted on Mar 12, 2009

Saaboheme
  • 76 Answers

SOURCE: how to relace clutch cable on 1995 saab se 900 turboon saab 900se

1. Remove the battery.
2. Remove the clutch cable end from the clutch arm end at the wire stop.
3. Slide out the rubber doughnut from the gearbox housing which holds the clutch cable
4. Move the distribution box nut and the alarm pin attached to it (some modules)
5. Disconnect the clutch cable holder from the fender and the data link holder.
6. Remove the drivers lower panel below the steering wheel and remove the air duct as well as the knee shield.
7. Slide out the fuse box holder and ICE Box (should be a black box with many wires going to it). You can remove the instrument cluster at this point but you can also do this without removing the cluster with a little patience
8. Move the pedal spring to one side and remove the eye catch for the cable.
9. Remove the clutch cable by pulling it out from the engine compartment
10. Reinstall in the reverse. Saab actually came out with a bulletin which Needed one to install two washers at the back of the new cable instead of one. The factory cable comes with one but you can remove the 2nd washer off the old cable and install it on the new cable so two exist. This helps take up excessive pedal slack.

Posted on Apr 29, 2009

Saaboheme
  • 76 Answers

SOURCE: reading the gauge on the oil dipstick 1998 saab 900

The dip stick end should have a plastic square piece with two roundish bulbs on each end. The oil level should read just at the bottom of the top bulb (the bulb nearest the yellow cap at the top end of the dip stick). This indicates full. A level reading anywhere between the two bulbs is adequate but not optimal. Oil below the top end of the bottom bulb, means 1 quart low, and no oil at all on the bottom bulb means get some oil in there double quick.

Posted on May 06, 2009

saabreur
  • 51 Answers

SOURCE: APC Solenoid Valve Knocking

The APC valve regulates boost pressure (via the wastegate) to avoid over-pressurising the engine. It ensures that a safe boost pressure isn't exceeded. Don't run with it disconnected or you risk blowing the engine!

Problem areas can include: knock sensor on the engine block (also poor quality fuel, dirty engine causing knock); engine ECU.

You need to provide more information about when this happens:

hard accelerating? (likely poor quality fuel, dirty plugs/engine causing knock) and general driving similar.

idling? possibly a knock sensor or ECU related problem

What rpm? what boost gauge pressure?

as an outside chance, maybe a sticky wastegate

Saabreur

Posted on May 30, 2009

  • 4 Answers

SOURCE: Unable to locate ignition switch

yeah i have taught a few people to dfrive, its funny to watch them try to fid it. yeah its inbtween the seats and one thing to remember with this car if you stall you have to unturn the key all the way befor starting again.

Posted on Oct 13, 2009

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