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misfire

  1. Misfire. Could it be ECU?

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    I have an 06 9-3. I have had a misfire I can't figure out. When I reset car by touching POS and NEG together every thing starts off great. After a a few miles the check engine light comes on and it misfires like crazy at increasing rpm. Light is crankshaft position sensor. Actually it says...
  2. Csp or Ecu

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    I have an 06 9-3. I have had a misfire I can't figure out. When I reset car by touching POS and NEG together every thing starts off great. After a a few miles the check engine light comes on and it misfires like crazy at increasing rpm. Light is crankshaft position sensor. Actually it says...
  3. 07 Aero injector mystery misfire

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Hi all, I'm nearly stuck on my search for the cause of a mystery misfire in cylinder 1 of my 2007 Saab 9-3 Aero 2.8L Manual... My BlueDriver code reader is spitting out P0201 and P0301, and after replacing the cylinder 1 coil and plug, all the injectors, and performing countless tests, I have...
  4. 2010 9-3 2.0T B207R misfire: coil or plugs? something else?

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Hey guys, I am new to the Saab Central and to Saab stories all together... lol I am a big ecotec fan and picked up a 2010 9-3 2.0T for $3k, 227k miles but one owner and garage kept. Anyway when i first got it (Jan 2019) I noticed if i held the peddle down in high gear (when i have should been...
  5. Randomly upon startup, car engine will misfire with shaking/smoke until restart.

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Car: 2006 Sportcombi 2.0T Issue: Wednesday, I get into my car to head to work and it starts up fine. I forgot my wallet, turn off car after it had been running for about 2 mins, and run inside. When i come back out and start it up, a crazy shaking occurs from engine bay and my tailpipe is...
  6. Potential 9-5 Purchase

    9-5 Workshop
    Hello everyone, longtime lurker and Saab owner here. I've recently been given the chance to purchase an 07 9-5 Aero, but the owner describes the car as "the car jerks when you go to accelerate and the engine light starts blinking". My first instinct would be either the throttle body or the DIC...
  7. Creep Surge/Misfire?

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    I've been getting a weird surge or misfire lately right after stopping the car after creeping along, like navigating a parking garage slowly. It doesn't happen all the time so it's hard to tell exactly what it's behavior is. I don't think I have bad valves, the car starts up immediately when...
  8. Saab 9-3X SportCombi ECM & Random Misfire Codes

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Okay, so I know that these codes are relatively common, so pardon me if there is a go-to thread on the issues. I was driving along the highway when I had a backfire and lost power. I was able to limp off the highway and then home, but not before I stopped in and got a readout on my check engine...
  9. Cel code p0300???!

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    hey guys. i have a 2006 9-3 arc with 196k miles. I noticed a Check Engine Light today when i left the starbucks parking lot and i went straight to autozone to get it checked. It was P0300 (random misfire detected). What might be the cause of it? Things that are worth mentioning that might be...
  10. Misfire Under LOad 9000 Aero

    9000 Workshop
    Hi I am a DIY 900 Aero user of 18 years experience, 2 '95 Aeros. Have had fuelpump, direct ignition and throttle block failures, carry a spare direct in ignition cartridge, etc. But the ignition and fuel (pump) failures were total and immediate. This latest problem is new to me. Have some...
  11. Engine cuts due to misfires?

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Had my 2006 9-3 estate with the 2.8t V6 (auto) for about two weeks now and had no major issues so far (apart from a bit of coolant escaping but was topped back up) On Sunday afternoon I drove less than a mile when the car started to judder quite violently at low rpm then just died, after...
  12. Terrible MPG all of a sudden

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Hi everybody, I have had a misfire issue on my car for quite some time. It hasn't gotten better or worse and the car keeps chuggin along. The misfiring occurs when I press the throttle 50% or more. The car then shudders pretty badly. I was getting acceptable MPG, SID usually estimated around 21...
  13. Check engine light for knocking, misfire, and csp sensor, but car runs good

    9-5 Workshop
    Occasionally, my check engine light will come on in my 2000 saab 9-5. The codes are for misfire and knock in some or all cylinders. And sometimes, a code for the crankshaft position sensor comes up. I've replaced the sensor and it still gives that code. Even with all of those codes, it runs...
  14. On and off P0300 during cold start for the past few months...

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Half way through the winter my 04 ARC when first starting her up in the morning would run rough for a good 10-20 seconds or until I gave it some gas and the idle would immediately clean itself up and stay that way for the remainder of the day. I could turn the car on and off multiple times...
  15. Check Your Grounds

    9-5 Workshop
    So a week after I replaced the two O2 sensors in my '02 Aero, and it was a good-running week after I did that, I started getting misfires and eventually a CEL that would flash menacingly whenever I got above 2-3psi of boost. Not good. The codes I pulled changed over the next few days, but...
  16. 2.8 V6 Idle Misfire Issue

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    I have a an odd misfire issue on my 2.8 V6 that is really puzzling me, and I am hoping someone on here will be able to provide me with some insight. The car on misfires under low load conditions, i.e. sitting at idle, or while maintaining a set RPM in neutral. The misfire can be felt, mostly I...
  17. Rough Idle only on start up...

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Here's a link to a video I took last night. This only happens on start up, immediately after the initial crank's RPMs drop to normal idle speed. You can only hear/detect this at idle. Drive for about 2 minutes & it warms up & it's gone until the engine cools off again...
  18. P0171, P0300, P0441 Misfires and Hesitation

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    My 04 SAAB 9-3 2.0t has a lean code, random misfire code, and a purge valve malfunction code. I did a fuel pressure test and got 10 psi while priming the pump and just under 40 psi while running. Car has intermittent misfires and bad hesitation at time. Any suggestions?
  19. Running Lean and Misfiring HELP PLEASE!

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Hello, I have owned a 2003 Saab 9-3 linear for about a year now and have been working out problems as they come but I am finally stumped. I was getting the well known ECM failure code so I had the ECU replaced and married by Country Imports with a ECU that was out of a heavily modfied 9-3...
  20. p0300 set at cold start idle while engine surges

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Ok so I know this p0300 code has been gone over hundreds of times. I have searched and have not found anything that matches my issue. I have a p0300 code that I have reset multiple times. It keeps coming back every time the outside temp drops below about 40 deg.F. when this happens is when I...
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