Update to my BS3/Backfire issues...
So is it safe to say that the backfiring was caused by the bad IAC sensor, and the BS3 not being able to power up/communicate with the laptop was caused by the secondary chip being fried?
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
Thread Starter
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
So is it safe to say that the backfiring was caused by the bad IAC sensor, and the BS3 not being able to power up/communicate with the laptop was caused by the secondary chip being fried?
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
Last edited by Fireball; Aug 30, 2009 at 08:24 AM.
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Verdad Gallardo Thread Starter
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
So is it safe to say that the backfiring was caused by the bad IAC sensor, and the BS3 not being able to power up/communicate with the laptop was caused by the secondary chip being fried?
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
My BS3 car had a bunch of backfiring issues last year that we couldn't figure out, until we took it apart to change a few things around and found the IAC sensor was bad..
measured coil resistance in the IAC. I found some info on LTI IACs, but I think the coil info is still relevant. Essentially, coils should be between 40 and 80 ohms and no continutity between coils.
what mine measured at the BS3 harness:
Coil A (A-high to A-low): 48 ohms (in spec)
Coil B (B-high to B-low): 4.8 ohms (out of spec)
A-high to B-low: 5.1 (should be infinite)
B-high to A-low : 51 ohm (should be infinite)
A-high to B-high: 52.2 (should be infinite)
A-low to B-low: 4.1 (should be infinite)
Thread Starter
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Shawn is a certifiable perfectionist...
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
Hang the chips from the mirror!!
Kurt
Kurt
Shawn is a certifiable perfectionist...
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
Shawn is a certifiable perfectionist...
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
When he got my injectors...they were 12% variance from low to high. After his magic touch...he got them within 2%...but that wasn't good enough for him
he gave them to a specialist he knows to try to get them down to 1%
Got my BS3 back yesterday...they were even nice enough to tape the blown chips to the box haha
. Glad I went the route I did.Sounds like you got it figured out though, hope to see that 7 sec pass soon...
