split BLM's - HELP!
Thread Starter
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
split BLM's - HELP!
My driver side Lterm is reading 108 with the Sterm around 90 and the passenger side is reading Lterm 150 with a Sterm around 160!!
I tested the injector resistance and they are all at 12.9-13.1 ohms which is well within the 1 ohm allowable deviation. Also, I tested the fuel pressure and I got 44psi at key on and stedy.. it fell off after about 20 min to 38psi.. after 40 min around 29 psi etc..etc.. Also, the fuel pressure drops to abhout 38 with the engine running at idle (from 44 at key on).
The IAC counts at idle are around 50-60.. the TPS voltage is .69v the fuel trim cell is 16.. No EGR or CCP activity..
There are no exhaust leaks and the 02 sensors are less than a few months old.
I am pulling between 55-65 kpa of manifold vaccum.. this is driving me crazy!!
What would be causing this? what gives?
:cry :leaving:
I tested the injector resistance and they are all at 12.9-13.1 ohms which is well within the 1 ohm allowable deviation. Also, I tested the fuel pressure and I got 44psi at key on and stedy.. it fell off after about 20 min to 38psi.. after 40 min around 29 psi etc..etc.. Also, the fuel pressure drops to abhout 38 with the engine running at idle (from 44 at key on).
The IAC counts at idle are around 50-60.. the TPS voltage is .69v the fuel trim cell is 16.. No EGR or CCP activity..
There are no exhaust leaks and the 02 sensors are less than a few months old.
I am pulling between 55-65 kpa of manifold vaccum.. this is driving me crazy!!
What would be causing this? what gives?
:cry :leaving:
Melting Slicks
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
Re: split BLM's - HELP! (BluByU)
A fauly O2 could be the culprit, try swapping them from side to side. Also, an exhaust leak ahead of the O2 can cause problems as well. (although you said there is none) A vacuum leak can cause a problem depending on where it was. I had an ECM do that to me one time, but I would get a code while driving.(lean O2)
I have unplugged an injector and the split was never that bad, so I doubt that one bad injector can cause it to be off that far. I suppose a misfire or bad spark plug or wire would cause it as well, but you should feel that. Hope you find it. Let us know what it was when you do!
I have unplugged an injector and the split was never that bad, so I doubt that one bad injector can cause it to be off that far. I suppose a misfire or bad spark plug or wire would cause it as well, but you should feel that. Hope you find it. Let us know what it was when you do!
