hello Everyone,
I have been searching around the forum to get a few questions answered since my car is running odd and cannot seem to find some answer. Hopefull I can get pointed in the right direction to fix some issues I am having.
I am throwing a code 42 which is the Vehicle Speed Sensor, I keep reading this deals with the speedo cable. My speedo cable still works and it is still reading properly. would the actual sensor on the Trans be the possible culprit? or is this a window to another possibly bigger problem?
Here are my list of mods before I continue onto my second problem:
APEXI SAFC NEO (all 0 out I have not messed with it at all)
AFPR with vaccum base fuel pressure is set at 35 I have not checked the pressure without the vac line.
The motor has been modified with upgraded internals.
550cc Injectors
LEX AFM
Walbro Fuel Pump (authentic not a knockoff)
AEM UEGO wideband
J Tube blocked off.
Fuel Dampner Bypassed.
Timing is set right now at 10 deg per the TSRM, and yesterday I checked the electronics for the AFM and the ohm is within spec. I have not checked the TPS, or the Idle Control Valve.
Now the car starts fine but it has a small miss. The car idles at 650 to 700 RPM and it has a 30 to 50 RPM fluctuation when the miss comes on, I have a DDP so the miss is very apparent. I am not sure as to what could be casuing the miss since the timing is within specs and fuel pressure is good. I do not have any vaccum leaks, I've checked for them twice.
The third problem I am having is when i drive the vehicle at 2,000 RPM the car leans out where the AFRs are above 17 for a split second and then corrects pass 2k RPM and it does this again between 3500 and 4k RPM.
As i mentioned i have not messed with the NEO at all and there have been no adjustments made apart from getting the FP and Timing set per the TSRM.
at idle my AFRs are between 13.2 and 14.9
Any help would be appreciated in regards to this, or if you guys need more information let me know I can go and test something and report back with the results. I appreciate all the help.
I have been searching around the forum to get a few questions answered since my car is running odd and cannot seem to find some answer. Hopefull I can get pointed in the right direction to fix some issues I am having.
I am throwing a code 42 which is the Vehicle Speed Sensor, I keep reading this deals with the speedo cable. My speedo cable still works and it is still reading properly. would the actual sensor on the Trans be the possible culprit? or is this a window to another possibly bigger problem?
Here are my list of mods before I continue onto my second problem:
APEXI SAFC NEO (all 0 out I have not messed with it at all)
AFPR with vaccum base fuel pressure is set at 35 I have not checked the pressure without the vac line.
The motor has been modified with upgraded internals.
550cc Injectors
LEX AFM
Walbro Fuel Pump (authentic not a knockoff)
AEM UEGO wideband
J Tube blocked off.
Fuel Dampner Bypassed.
Timing is set right now at 10 deg per the TSRM, and yesterday I checked the electronics for the AFM and the ohm is within spec. I have not checked the TPS, or the Idle Control Valve.
Now the car starts fine but it has a small miss. The car idles at 650 to 700 RPM and it has a 30 to 50 RPM fluctuation when the miss comes on, I have a DDP so the miss is very apparent. I am not sure as to what could be casuing the miss since the timing is within specs and fuel pressure is good. I do not have any vaccum leaks, I've checked for them twice.
The third problem I am having is when i drive the vehicle at 2,000 RPM the car leans out where the AFRs are above 17 for a split second and then corrects pass 2k RPM and it does this again between 3500 and 4k RPM.
As i mentioned i have not messed with the NEO at all and there have been no adjustments made apart from getting the FP and Timing set per the TSRM.
at idle my AFRs are between 13.2 and 14.9
Any help would be appreciated in regards to this, or if you guys need more information let me know I can go and test something and report back with the results. I appreciate all the help.
