Conflicting data/readings...
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From: 600 yds out
Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
Conflicting data/readings...
I just installed 90 pph injectors. I set the BPC to 92. I knew I was going to have to adjust the VE tables a bit to get things back to the way they were.
The engine starts ok but once it begins to warm up it adds too much fuel. I can see this thru my inj pw. The wierd part is the commanded open loop AFR climbs (numerically...going from 11.5 to 14.1) and the inj pw climbs (numerically...from 16000 to 22000).
Isn't this backwards of what it should be doing? Basically, initial start-up is ok but if you give it a minute it starts to add fuel for some reason.
Any ideas?
The engine starts ok but once it begins to warm up it adds too much fuel. I can see this thru my inj pw. The wierd part is the commanded open loop AFR climbs (numerically...going from 11.5 to 14.1) and the inj pw climbs (numerically...from 16000 to 22000).
Isn't this backwards of what it should be doing? Basically, initial start-up is ok but if you give it a minute it starts to add fuel for some reason.
Any ideas?
Last edited by V8Astro Captain; Feb 10, 2003 at 02:04 PM.
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From: Chasing Electrons
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Re: Conflicting data/readings...
Originally posted by V8Astro Captain
I just installed 90 pph injectors. I set the BPC to 92. I knew I was going to have to adjust the VE tables a bit to get things back to the way they were.
The engine starts ok but once it begins to warm up it adds too much fuel. I can see this thru my inj pw. The wierd part is the commanded open loop AFR climbs (numerically...going from 11.5 to 14.1) and the inj pw climbs (numerically...from 16000 to 22000).
Isn't this backwards of what it should be doing? Basically, initial start-up is ok but if you give it a minute it starts to add fuel for some reason.
Any ideas?
I just installed 90 pph injectors. I set the BPC to 92. I knew I was going to have to adjust the VE tables a bit to get things back to the way they were.
The engine starts ok but once it begins to warm up it adds too much fuel. I can see this thru my inj pw. The wierd part is the commanded open loop AFR climbs (numerically...going from 11.5 to 14.1) and the inj pw climbs (numerically...from 16000 to 22000).
Isn't this backwards of what it should be doing? Basically, initial start-up is ok but if you give it a minute it starts to add fuel for some reason.
Any ideas?
RBob.
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iTrader: (1)
Joined: Jun 2001
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From: 600 yds out
Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
Uhhh...hehehe. Ya know, I dunno if the numbers even mean anything. I've just been watching them and the higher they go, the more fuel goes in.
Let's see...
there's the ALDL x-mit stuff. I'm sure you knew that...
I have $0053 @ 0x4E7.....and $0052 @ 0x4E9
huh...maybe I have the MSB and LSB turned around....
Anyway, I calc'd 92 for the BPC. That didn't work at all. So I tried about 5 other chips and found that setting the BPC to 100 works great! All the BLM's were really close (some rich some lean). After I figured that out I'm right back to where I was.
So what's the deal with my bolluxed inj pw display?
Let's see...
Code:
;---------------------------------------------
; ALDL XMIT TABLE OR ADDRESSE'S
; 127747 ECM
;
; 5.7L TBI L05 C/K 87,91 TRUCKS
;
; DATA PIN: Read data on PIN "E" of ALDL Connector
;
; BAUD RATE: 160 Baud
; Open - 20 Bytes
; 10k - 20 Bytes
; Shorted - 20 Bytes
;
;---------------------------------------------
ORG $04E7 ;
LD4E7 FDB $D002 ; 1. EPROM ID LSB
LD4E9 FDB $D003 ; 2. EPROM ID MSB
;---------------------------------
LD4EB FDB $00FD ; 3. CURRENT IAC POSIT, (0-255)
; N = COUNTS
;---------------------------------
LD4ED FDB $0025 ; 4. COOLANT
; see table 1
;---------------------------------
LD4EF FDB $0034 ; 5. MPH,
; (MPH/1)
;---------------------------------
LD4F1 FDB $002D ; 6. MAP, (A/D, 0-255)
; VOLTS = N * .0196
;---------------------------------
LD4F3 FDB $001C ; 7. RPM/25
; RPM = N * 25
;---------------------------------
LD4F5 FDB $0048 ; 8. TPS (A/D, 0-255)
; VOLTS = N * .0196
;---------------------------------
LD4F7 FDB $00A4 ; 9. INTIGRATOR, (0-255)
;
;---------------------------------
LD4F9 FDB $003E ; 10. o2 (A/D)
; mvdc = 0.2304 * A/D VAL
;---------------------------------
LD4FB FDB $00E0 ; 11. ERROR WD 1 MALFFLG1
;---------------------------------
LD4FD FDB $00E1 ; 12. ERROR WD 2 MALFFLG2
;
; b7 Err 43 ESC FAILURE
; b6 Err 44 Oxygen sensor LEAN
; b5 Err 45 Oxygen sensor RICH
; b4 Err 51 PROM Error
;
; b3 Err 52 CAL PACK MISSING
; b2 Err (not used)
; b1 Err 54 FUEL PUMP relay failure
; b0 Err 55 ADU ERROR
;---------------------------------
LD4FF FDB $00E2 ; 13. ERROR WD 3 MALFFLG3
;---------------------------------
LD501 FDB $000E ; 14. MAWF1, (FLAG), b1, 4, 7 & b6
;---------------------------------
LD503 FDB $0045 ; 15. BATTERY VOLTS, (A/D, 0-255)
; VOLTS = N * .1
;---------------------------------
LD505 FDB $0801 ; 16. MCU2IO
;---------------------------------
LD507 FDB $0073 ; 17. OLD PA3
; N = COUNTs
;---------------------------------
LD509 FDB $00A3 ; 18. BLM, (BLM/1)
;
;---------------------------------
LD50B FDB $00BA ; 19. O2 CROSS COUNTS
; N = COUNTS
;---------------------------------------------
RAM Variable stuff
L0052 EQU $0052 ; BPW, MSB
L0053 EQU $0053 ; BPW, LSB I have $0053 @ 0x4E7.....and $0052 @ 0x4E9
huh...maybe I have the MSB and LSB turned around....
Anyway, I calc'd 92 for the BPC. That didn't work at all. So I tried about 5 other chips and found that setting the BPC to 100 works great! All the BLM's were really close (some rich some lean). After I figured that out I'm right back to where I was.
So what's the deal with my bolluxed inj pw display?
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From: Chasing Electrons
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Originally posted by V8Astro Captain
So what's the deal with my bolluxed inj pw display?
So what's the deal with my bolluxed inj pw display?
Try placing $00AB at $4E7 and $00AC at $4E9. That is the sync PW value. It won't be perfect but it is the PW value.
RBob.
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From: 600 yds out
Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
Originally posted by V8Astro Captain
Anyway, I calc'd 92 for the BPC. That didn't work at all. So I tried about 5 other chips and found that setting the BPC to 100 works great! All the BLM's were really close (some rich some lean). After I figured that out I'm right back to where I was.
Anyway, I calc'd 92 for the BPC. That didn't work at all. So I tried about 5 other chips and found that setting the BPC to 100 works great! All the BLM's were really close (some rich some lean). After I figured that out I'm right back to where I was.
I'm gonna go get a gauge, maybe my fuel pump is shot...
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