Gazza95 0 Report post Posted January 15, 2010 Hey guys, started my bmw today and it idled for like 2 seconds then died, so i started it again and reved it and when it hit about 2000 rpm it backfired then again at 2500 and then at 3000 and so on. anyone knw what might be wrong with it? it also doesnt idle and just dies, thinking it might have somthing to do with the T.P.S, any ideas? thnx guy Quote Share this post Link to post Share on other sites
zenetti 0 Report post Posted January 15, 2010 cracked/split intake pipe/boot? Quote Share this post Link to post Share on other sites
Jamez 2147483647 Report post Posted January 15, 2010 is the AFM plugged in? Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted January 15, 2010 What have you actually checked ?? these guessing games are hard to diagnose on a key board. Do you have any skills or proper tools ? Quote Share this post Link to post Share on other sites
Gazza95 0 Report post Posted January 15, 2010 Therez a few cracks in the intake piping, so what would that be making it do? back firing or not idling Quote Share this post Link to post Share on other sites
1rotty 40 Report post Posted January 15, 2010 Vacuum leak=bad idle Quote Share this post Link to post Share on other sites
BM WORLD 1260 Report post Posted January 15, 2010 also check the dizzy cap and rotor for moisture or worn out etc Quote Share this post Link to post Share on other sites
c.robertson00 11 Report post Posted January 15, 2010 What engine does the car have? Quote Share this post Link to post Share on other sites
turboprop 0 Report post Posted January 15, 2010 m40 Quote Share this post Link to post Share on other sites
Gazza95 0 Report post Posted January 15, 2010 yep m40 Quote Share this post Link to post Share on other sites
antil33t 90 Report post Posted January 15, 2010 Take the intake boot off and tape it up. and if that fixes the problem, buy a new one. Quote Share this post Link to post Share on other sites
Carl 3 Report post Posted January 15, 2010 (edited)  Cracked pipe/boot will cause poor idle, stalling, and will backfire if you press the accelerator hard Edited January 15, 2010 by pando Quote Share this post Link to post Share on other sites
Docile 64 Report post Posted January 15, 2010 mine backfired when i reach 3k rpm. and rough idle when my camshaft sensor was shot. although this is in the m50 though dunno if it applies to your car. Quote Share this post Link to post Share on other sites
