It seems that my blm on power logger screen is up to 142 at idle, this is on the screen where you can change the parameters, it is the top square on right of the two the other one is INT at 128,fuel press is at 40lb with hose off at idle.When i get it to 1500 rpms it drops to 128, it use to be reading around133 at idle before. My vac reads -18 at idle, does this mean i have a air leak somewhere? let me know i appreciate the help thanks.
BLM is high at idle on power logger
- Thread starter stevek
- Start date
Thanks for the reply I've had the screens out for a long time in maf , Im going to swap out o2 sensor with old one i have and see if that makes a difference , i swapped out o2s no difference, i did notice a drop in my o2 readings lately at wot, in 1st they they were around high 7s and now they at low 6s ending up in low 7s and it sounded like i hit rev limiter and in 2nd they use to start off in low 8s and now they start off in low 7s and end in mid 7s didn't get to 3rd. also i noticed when i turn key on my fuel pressure gauge would go right up to 40lb and stay just about there ,now it only goes up to about 25lbs till i start up then it holds at 40lb at idle. maybe pump crapping out?
I will try to post logs, trouble is that i have my apple laptop half used for apple stuff and other half is used for windows thru VMware for power logger I have a problem signing into buick fourm on windows side with power logger ill try thanks for help also
[ QUOTE="TurboBob, posthist: 3663218, member: 350"]Post some logs.
this is how it looked before 1st pg
also befor 2nd pg
now it runs like this1st pg
now it runs like this 2nd pg , also now i can't get my fp to go below 40lb but it di get up to above 70lb at wot,guage does bounce alittle bit at idle let me know what you think , if you need any more numbers let me know thanks
Eric Stage I
TurboTweak Guy
- Joined
- May 25, 2001
I think your wideband O2 sensor is bad. Possibly your narrowband O2 also. Did you run any leaded race fuel in it?
been running 100 oct from gas station
both sensors are pretty old stock one and aem also,i did replace stock one with used one i had in box, did not change,do you think fuel pump is getting weak and not keeping up with volume,
Eric Stage I
TurboTweak Guy
- Joined
- May 25, 2001
No, its actually probably too rich due to the bad wideband sensor. I would change both O2 sensors and test again.
ok will do thanks , i'll let you know
Eric Stage I
TurboTweak Guy
- Joined
- May 25, 2001
It's possible , but your wideband signal does not look normal. It's stuck in the mid 13's at WOT, even when you let of the gas, it doesn't move at all.
TR Custom Parts
Mark Hueffman - Owner
- Joined
- May 25, 2001
Is that what you are really running for boost numbers?
yes usually around 34-35
i just took off fuel press reg, took apart all looks good no rips in diaphragm, just made smoker to look for look for leaks, if no leaks i have car jacked up to drain tank and check fuel pump, i bang on bottom of tank and sounds like maybe baffle or something loose in there, will check out next.
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