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1996 SAAB 900 will not start. cranks fine but engine ...


Sent to Car Experts September 03, 2006 11:24 a.m.
1996 SAAB 900 will not start. cranks fine but engine backfires and dies. after several tries it will eventually start. Other aspect is the car will start bucking out of the blue when going any speed on a road and engine stalls. i have to coast to a stop .crank a dozen times and the engine starts. It's made for some hectic trips. Can you help? Thank you

Optional Information:
1996 Saab 900 SE 4 cyl 16 v turb

Already Tried:
injector cleaner
Customer (name blocked for privacy)
Status: Closed   Value: $8   
Info Request
September 03, 2006 11:54 a.m. (30 minutes and 8 seconds later) 		REPLIED to Info Request Check Mark

Hello Customer (name blocked for privacy), does the check engine light happen to come on at any time when this happens?
PictureBOBBY  -- Technician/ Service Advisor -- 100% Positive Feedback on 912 Car Accepts
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Reply to BOBBY
Sent September 03, 2006 12:07 p.m. (12 minutes and 58 seconds later)
yes it does.it'll blink on and off while the engine jerks and after a while go off and the car will be running seemingly great. the oxygen sensor was replaced less than 1000 miles ago

Edited by Customer (name blocked for privacy) on September 3 2006 at 12:09pm
Customer (name blocked for privacy)
Answer
September 03, 2006 11:27 p.m. (11 hours and 19 minutes later) 		ACCEPTED Check Mark
The first thing I would do is go to your local autoparts store and have them scan your computer for codes. If the light has come on then there is a possibility that the computer may have recorded the problem. Also, can you tell me how many miles you have on the vehicle? If you have the chance to get these codes come back here with them and we can go from there.
PictureBOBBY  -- Technician/ Service Advisor -- 100% Positive Feedback on 912 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH
Reply to BOBBY
Sent September 04, 2006 1:25 p.m. (13 hours and 58 minutes later)
Hello again,
the computer readout was "random multiple cylinder misfire" or code P0300. the car has 155000 miles
Customer (name blocked for privacy)
Answer
September 04, 2006 1:36 p.m. (10 minutes and 30 seconds later) 		REPLIED Check Mark
Have you had any parts replaced recently? When was the last tune up done?
PictureBOBBY  -- Technician/ Service Advisor -- 100% Positive Feedback on 912 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH
Reply to BOBBY
Sent September 04, 2006 1:47 p.m. (10 minutes and 52 seconds later)
i had it at a specialized Saab shop about 1000 ago, which replaced the O2 sensor, battery and main battery cables, read and reset the check engine light. I had asked them to do a tune up but they told me the car was running fine and didn't need one.and in fact it's been running great since... up to a few days ago
Customer (name blocked for privacy)
Answer
September 04, 2006 11:15 p.m. (9 hours and 28 minutes later) 		REPLIED Check Mark
The first thing I would recommend checking would be the fuel pressure. You will need to see what the fuel pressure is reading and we can go from there. Do you have access to a pressure gauge? Also when was the last time the fuel filter was changed?
PictureBOBBY  -- Technician/ Service Advisor -- 100% Positive Feedback on 912 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH
Reply to BOBBY
Sent September 05, 2006 10:40 a.m. (11 hours and 25 minutes later)
the fuel pump was replaced about 20,000 miles ago, but i doubt the fuel filter ever was. I'm going to have the fuel pressure tested and change the fuel filter and see what happens.The guy who tested the computer code mentionned something about "maybe the coil pack(?)". Does it make sense?
Customer (name blocked for privacy)
Answer
September 05, 2006 11:33 a.m. (53 minutes and 0 seconds later)
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PictureBOBBY  -- Technician/ Service Advisor -- 100% Positive Feedback on 912 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH

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