2003 Saab 9-5 CHECK ENGINE light with vibration

If the engine light is on you can go to autozone or similar and have vehicle scanned for codes this will give you a place to start

Go to online store reliable they have repair manuals I am sure you will get the solution. Here's the link
Saab 9 3 2003 2007 Service repair manual

I also have the same problem with my 2003 saab linear. It show the number po0638, I went out and bought a new throttle body and my car still didnt start. If anyone know any soLution please help me 253 249 9648.

they could b referring to the vehicle speed sensor, which senses vehicle speed for input to ur ecm and not to ur speedometer. u most likely have 2 sensors with almost same name. their located on ur trans, an some sense input shaft speed an the others sense output shaft speed..... good luck hope this clarifies it for u a little bit

Water on any electrical part of the engine can cause problems. Even high humidity. The only parts you can easily check and dry out is the plug wires where they connect to the coils and any connections you can find where components are plugged into wiring a harness.

check for a secondary wire coming of the battery
that may not have been hooked up to the battery.
also check fuses due to voltage spike

Take your car to the dealer, local garage, auto parts store and get them to pull the code which should tell you exactly what the problem is. I would also check the transmission again and make sure it isn't leaking and is at the correct level. If the problem was low transmission fluid you still need to have the code "cleared" before the car will return to normal. Hope this helps.

If you will take the car to a local auto parts store they can see what the code is most do a free check engine light check.

bridge seals on injector pump

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.