cliffkemp
10+ Year Contributor
- 391
- 11
- Apr 19, 2010
-
carrollton,
Georgia
Over the last year and a half, my talon has been getting worse and worse with partial turbo spool at around 3500 rpms. I am not sure what is going on with it. It is doing 2 things now and, I just replaced the coilpack thinking it was just going bad.
1. It is sputtering as the turbo is almost spooled up at around 3500 like it is not getting spark or fuel and this is at about 30 to 40 percent throttle but, if I give it around 50% throttle, it acts normal and spools up and pulls with no issue
2. If I get into boost for a full gear, any gear and go to around 7000 or so rpms, it pulls normal. After shifting to the next gear, it sputters and does like it does in the situation above at any throttle position for about 2 to 4 seconds or so. If I just let off the gas completely and then hit the gas after about 4 seconds or more, it starts to run fine.
My a/f is around 10.5 to 11.2 at full throttle and slightly leaner at less than full throttle but, never goes leaner than 11.5 in any gear under any load based on my meter but, it is not being logged. I have an upgraded FP green on the car. It did not do this when I took it to the track at couple years ago and pulled great in 1st and 2nd and started knocking in third and 4th and let off and did not run again. It was running good enough to run a 2 at the 60 foot (my second run ever) and ran a 13.6 letting off in 3rd and 4th @ 92 mph. I tuned the knock to where it was just about nothing and then this started. I thought it was a boost leak but, it is not. I am running about 16 to 18 psi as my boost gauge quit working. I will try to get a log off of link in the near future.
Any ideas what would cause this? It still has the same BOV, boost controller at the same postition, and same exhaust setup with tial wg. Nothing has been changed at all other than turning out the knock over a year and a half ago.
1. It is sputtering as the turbo is almost spooled up at around 3500 like it is not getting spark or fuel and this is at about 30 to 40 percent throttle but, if I give it around 50% throttle, it acts normal and spools up and pulls with no issue
2. If I get into boost for a full gear, any gear and go to around 7000 or so rpms, it pulls normal. After shifting to the next gear, it sputters and does like it does in the situation above at any throttle position for about 2 to 4 seconds or so. If I just let off the gas completely and then hit the gas after about 4 seconds or more, it starts to run fine.
My a/f is around 10.5 to 11.2 at full throttle and slightly leaner at less than full throttle but, never goes leaner than 11.5 in any gear under any load based on my meter but, it is not being logged. I have an upgraded FP green on the car. It did not do this when I took it to the track at couple years ago and pulled great in 1st and 2nd and started knocking in third and 4th and let off and did not run again. It was running good enough to run a 2 at the 60 foot (my second run ever) and ran a 13.6 letting off in 3rd and 4th @ 92 mph. I tuned the knock to where it was just about nothing and then this started. I thought it was a boost leak but, it is not. I am running about 16 to 18 psi as my boost gauge quit working. I will try to get a log off of link in the near future.
Any ideas what would cause this? It still has the same BOV, boost controller at the same postition, and same exhaust setup with tial wg. Nothing has been changed at all other than turning out the knock over a year and a half ago.