Power FC Timing issues
07-04-04, 11:32 AM
#1
Timing issues
check here for the history..
after pulley and pfc install with the learning time..
fd is idlin rough.. shes knockin and pingin.. she sounds like she has a bridgeport..
here are the L and T values from PFC..
hopin someone can diagnose as im still tryin to decipher the art of timing..
Key set to on
Leading: -25
Trailing: -25
Idle @ 1200rpm
Leading: 11
Trailing: 3
Vaccum: 18.5
Idle with defroster on @ 950rpm
Leading: 10
Trailing: 4
Vaccum: 17.5
Idle with defroster and fan on @ 950rpm
Leading: 4
Trailing: -6
Vaccum: 16
this is from a virgin pfc....
after pulley and pfc install with the learning time..
fd is idlin rough.. shes knockin and pingin.. she sounds like she has a bridgeport..
here are the L and T values from PFC..
hopin someone can diagnose as im still tryin to decipher the art of timing..
Key set to on
Leading: -25
Trailing: -25
Idle @ 1200rpm
Leading: 11
Trailing: 3
Vaccum: 18.5
Idle with defroster on @ 950rpm
Leading: 10
Trailing: 4
Vaccum: 17.5
Idle with defroster and fan on @ 950rpm
Leading: 4
Trailing: -6
Vaccum: 16
this is from a virgin pfc....
07-04-04, 11:47 AM
#2
Eye In The Sky
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First of all, this should be in the APEXI PFC forum.
You may be in limp home mode. Caused by:
1) Map sensor not connected to UIM.
2) Settings - PIM VOLT not set at NORMAL. Options 1-4 do not work and cause limp home mode.
3) MOP not connected.
4) Hosed ??????
You may be in limp home mode. Caused by:
1) Map sensor not connected to UIM.
2) Settings - PIM VOLT not set at NORMAL. Options 1-4 do not work and cause limp home mode.
3) MOP not connected.
4) Hosed ??????
07-04-04, 04:45 PM
#6
Weird Cat Man
So you just installed the PFC now with the pulleys or you had the PFC working fine before, THEN installed the pulleys and now you have a bad idle?
If it's a fresh PFC installation, check that the proper pins have been pulled or wires removed from the PFC/harness.
If it's a fresh PFC installation, check that the proper pins have been pulled or wires removed from the PFC/harness.
07-04-04, 06:39 PM
#7
pfc and pulleys were installed same time..
she ran perfect for the the first stages of learning..
about 10 minutes then she started the bridgeport idle with pingin..
sounds a lot like misfire..
install checks clean... its my second one..
had the second battery checked out afterwards...
she checked out bad.. it was a spare and had been sittin for over a year...
would this cause misfire and pingin... assumption that the injectors or coils are not gettin the proper voltage..
going to try and correct timing with the igt and igl correction test mode...
replacin the battery as well...
the values from the first post above was collected with the idle ig control enabled btw..
she ran perfect for the the first stages of learning..
about 10 minutes then she started the bridgeport idle with pingin..
sounds a lot like misfire..
install checks clean... its my second one..
had the second battery checked out afterwards...
she checked out bad.. it was a spare and had been sittin for over a year...
would this cause misfire and pingin... assumption that the injectors or coils are not gettin the proper voltage..
going to try and correct timing with the igt and igl correction test mode...
replacin the battery as well...
the values from the first post above was collected with the idle ig control enabled btw..
Last edited by amp; 07-04-04 at 06:55 PM.
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