Question about 2004 Saab 9-3
I recently took a road trip. On the way back, my car started running hard and loud, like a souped up Honda Civic. I took it in to the shop. They said it was the water pump and replaced it. The next day the same noise returned and when I took it back they said it was the compressor. I took it for a second opinion and the guessamation was possibly the tensioner balancing chain. The noise then went away for 5 days until I filled it up with gas. Now it is back. It's blowing cold air so I'm having trouble believing it is the compressor. It threw me when the noise stopped and then returned when I filled it with gas. It also starts differently. Without the noise, it turns maybe 4 times before it starts. With the noise, it starts immediately and is loud. While inside the cabin, the rumbling sound seems to be coming from the right side under the hood. Does anyone have any other suggestions?
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Posted on Jan 02, 2017
The sound comes from the ventilation system, if you push the button on your ventilation system that controls the air recycling it should reproduce the sound that you are describing.Apparently it is a plastic gear that switches between outside air and recycling and this gear has become damaged and lost some of its teeth.
You have to dismantle your glove box to be able to get to the mechanism to replace it. I have the same problem with my 2004
9-3 and as this fault does not affect the running of the car and the ventilation system is still fully functional i have decided to leave it as is. Hope this is of some help
Posted on Nov 29, 2008
Engine coolant sensor and Intake air sensor bad -----tech terms( ECT and IAT) The way to check these you need to hook up a scan tool to the cars computer and both of the readings for these sensor should read the same. If reading is off by 2 degrees that's ok not too off. And it should be in the morning before you start your car up. Thats the time you check it. hope this help
Posted on Dec 18, 2008
no worries about the airbag light. just be sure to wear you seatbelt. in the event of and accident the airbag may or may not deploy! but to replace the airbag unit its self will be very costly $800-2500. as for the noise you may need to be more specific. its can be anything from alignment, bad ball join, bad motor mount or tran mount, bent rim, or even a bad tire
Posted on Oct 27, 2009
remove the AC relay to shut the AC off all the time. Not sure why it wont start but you may havea security lockout. Fully charge the battery to proceed.
Posted on May 31, 2010
SOURCE: I can drive it no
u have a loss of power to the system due to a serious electrical issue, u will not get this solved on the fixya web site, this needs to go to the Audi dealer where they have the proper test gear and factory repair manuals to track this down, there also may be a factory service bulletin on this issue, the dealer can check that easily through the Audi service system computer link.
Posted on Oct 01, 2010
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