20 Most Recent 1999 Saab 9-5 - Page 3 Questions & Answers

Just no heat or no blower operation?

One way to check for a blown head gasket, is to simply smell the coolant reservoir. Pop the cap, and see if it smells like raw gas. Every headgasket, I've diagnosed has had this smell, even if the oil is not contaminated. Another way is to hook up a coolant pressure tester, and run the vehicle for 15-20 mins or so. If the head gasket is blown, the pressure will exceed 15 psi. sometimes as high as 25 psi. If there is oil in the coolant overflow tank, the head is cracked, about 90% of the time.
I'm working on a 03 Saab 95 2.3l t. This vehicle smokes on initial start up, then the smoke disapates, and the vehicle is fine. Another mechanic diagnosed it as bad valve seals. I disconnected the pcv system, and the vehicle no longer smokes. If the valve seals have gone bad, the vehicle will smoke on acceleration. Also if the turbo seals are leaking it will smoke more heavily on acceleration.

was it tuned up too

you have a dead short in your lighting system ,start by going to each and every bulb and check them and leading wiring to them look in all the places around fuse box for corrosion shorted wires, broken or rubbing together with bare spots , see if all other lights work well with out signals or 4ways, check brake lights as well,if you have a towing wiring check plug for damage or broken wires and corrosion.

If the fuses is O.K. check again the relay.I had the same problem in mySAAB 95.The relays/one for left and another for right headlamp/is located in engine compartment behing the battery under a black plastic cover.Check also the relays terminals.

You can't. There is no code you can change. It is a matter of an embedded code in your radio matching the one in your car's computer. If you bought a used Saab radio from a junkyard, you still have to take it to the Saab dealer to get them to change the code in your computer, so the radio will work. Nice, huh?

P1640 is Vehicle Security System/No Code from VSS Twice

Check for faulty electrical Circuit between ECM Harness connector and terminal no. 61 (blue/green wire) and TCM See image below any problems found repair circuit and go to step 3 if no problems found go to next step.

step 2

With Ignition tured off unplug ECM harness connector. connect SST 86 11 857 Test light (or equivalent) between ECM harness and connector terminals No. 01 (pink/White wire) and 61 (Blue/Green Wire) Turn ignition on and observe test light. Test light should come on for about one second then go out. If TCM has detected a fault, test light will flash 2 times a second. if operation is not as specified problem is TCM related. go to next step

Step 3

You made need a garage i'm a mechanic so this is for me Clear all DTC's. Drive Vehicle at Varying Engine Loads and RPM for 5 minutes. Recheck Scan Tool for any stored DTCs If DTC P1611 is present Substitute Known good ECM and retest system

I got this info from saab central forum do a search for it for more info . Hope it helps

pup up the hood, on your left, aside the battery, there is a black plastic box, check the diagram inside, it will tell you the one you need.

Oil generally will get into the coolant due to a headgasket leaking, or a cracked head.

You'll need to pressurize both systems (OIl & Cooling) to try & determine where the leak is coming from. .

Antifreeze in the oil can cause the pistons to sieze in the cylinders and if you've got oil in the anti-freeze, you more than likely have anti-freeze in the oil, or soon will.

Good luck.

Make sure you are within range of the car, then press the remote's unlock button at least 4 times to synchronize with the car. If this doesn't help then the battery and/or the remote is bad.

go to auto parts store let them run scanner and they can tell u what the problem might be

You set the cam timing with the engine set to TDC, the cam wheels have a line which should be just to the left of 12 oclock, the ignition timing is controlled by the engine management system and is not adjustable. HTH

Sounds like car is in limp home mode which needs reseting ,which may indicate you need a new Di Rail, or throttle body. Is engine management light on all the time if so Needs reseting. Hope this helps.

Have charging system checked.Some cars will not idle right if alternator is out.

wire by wire make sure you didnt disconnect something even a ground wire will make it not start

Have the fuel pressure tested, running out of gas will destroy the fuel tank moumted fuel pump or cause it to run slow with the resulting loss of power.

If the engine was ran for very long while overheated, probably broke your rings and you have no compression. Have compression tested, if low then you need a new engine.

coil or ignition module