Top 20 1999 Saab 9-5 Questions & Answers

Check the idle air control (IAC) sensor and the throttle position sensor(TPS).

probably just shorter belt will not go round air-con

For the amount of money it will cost it would be worth changing the thermostat anyway. They aren't very expensive and reasonably easy to repair. Water pump replacements are more expensive AND more work. Try the cheaper one first as thermostats are known to wear out. If the overflow tank is backing up it will be because the safety valve built into the water pump is diverting built up pressure.

head gaskets do not "dry out" running rough indicates injector problems --stale fuel dirty injectors or sticking injectors run the fault codes to determine fault area oil around spark plugs indicates that the rocker cover seal under the plug tube is leaking into the plug area

there may have been air trapped in the power steering system. Keep a close eye on the system & your oil. Make sure your not leaking (wrong filter etc.)

my saab did something similar to this except it sounded funny when it turned over (real fast) turns out that it had something to do with variable valve timing piston in heads, they wanted like 1300to repair it so just sold it , hope that s not your problem too

You have a HVAC air temperature control blend door failure. To repair this the entire dash assembly must be removed if you can even buy the parts needed, which I doubt.

ESP control unit fault or pressure regulator switch

Are you getting spark at the plugs ?

Rear seat cushion-fold forwards,release plastic clip from hinge,remove wiring multiplug if applicable.Lift out cushion.(40% backrest)Tilt forward approx 20degrees,use a screwdriver to release catch retainer on outer pivot pin.lift backrest and withdraw from inner pivot pin.Lift the backrest from inside vehicle.(will only lift out if backrest is tilted forward 20degrees from verticle. 60% section can then be removed on saloons by releasing the lock with a finger and pulling from the anchor pins.On estates unscrew centre seat belt lower mounting and unscrew hinge pin from centre support. unhook upholstery clip and lift backrest from lefthand side mounting.slide backrest towards the door to release centre pinlug and withdraw backrest from inside the vehicle. Refit in reverse order.

Blowing blue smoke is NOT an issue with the turbo, it is an issue with either piston rings or valve guides. You need an engine overhaul.

Looking from the front of the car, the engine number is on the right side, down low near the gearbox. See the (unfortunately rather unclear) diagram below:

There is a Haynes manual for Saab 9-5 (1997-2004) which covers most tasks.

1231=fuel pump secondary circuit low, 1251=air mixture solenoid malfunction

check for spark or a clogged air filter first.

It surely does. If you got the key,switch, and module fro one car. Go back and get the engine control module. This will work also. But beware. The engine module must fit you engine and transmission. Also beware. Some security modules are one time only program. Meaning, you have to buy a new one and have it programmed.

It is not reading the security chip. Something was set up wrong to keep it from recognizing or they don't match.

Just no heat or no blower operation?

Description of P1624 code:

was it tuned up too