The K-Pro Thread

[TheGrayCM]

I was having problems with my Hondata and it wouldnt read A/F or datalog. well I got my Ecu repaired and now Im comin up with a Vtec oil switch malfunction error code. I tried to switch the negative and positive wires on the VTC, but still no luck. Have any of you encountered this before and if so, is there any way to get it taken care of? Thanks

[timot_one]

Are you getting the same error code with your stock ECU?  Have you checked the harness to make sure there's continuity from the pin of the kpro side of the harness all the way to the connector in your engine bay.  Also, did you solder the connections or did you use quick connects?

[NVA-AV6]

I was having problems with my Hondata and it wouldnt read A/F or datalog. well I got my Ecu repaired and now Im comin up with a Vtec oil switch malfunction error code. I tried to switch the negative and positive wires on the VTC, but still no luck. Have any of you encountered this before and if so, is there any way to get it taken care of? Thanks

Trace the VTec pressure switch wire, sounds like it is not hooked up. the VTPS is normally closed to ground and opens when the VT solinoid opens and sends oil pressure to the VT system.

[TheGrayCM]

I was having problems with my Hondata and it wouldnt read A/F or datalog. well I got my Ecu repaired and now Im comin up with a Vtec oil switch malfunction error code. I tried to switch the negative and positive wires on the VTC, but still no luck. Have any of you encountered this before and if so, is there any way to get it taken care of? Thanks

Trace the VTec pressure switch wire, sounds like it is not hooked up. the VTPS is normally closed to ground and opens when the VT solinoid opens and sends oil pressure to the VT system.

I have the wires two wires from the harness hooked up to a connector to the vtc oil pressure valve that I bought at Acura.

[asnstyle22]

hrm... anyone have trouble with chams harness with the A/C? my tuner said the a/c keeps kicking on and off... also the TEMP gauge... the arm on the gauge doesnt go up as high as it would without the kpro..anyone get these problems?


edit: just saw on page 5 about the temp gauge running lower but is normal, however.. my temp gauge does go up eventually and goes right back down when i turn the heat on, does that mean the car is overheating?

[timot_one]

My a/c works fine, but I also know that Cham modified my harness after we installed it.  As far as the temperature gauge goes, it reads lower than it should, meaning that the gauge is wrong.  The weird thing is that kpro reads the coolant temp properly.  I have decided to ignore my stock temp gauge and have my coolant temp displayed on an OBDII device I have connected.

[neoryan7]

hrm... anyone have trouble with chams harness with the A/C? my tuner said the a/c keeps kicking on and off... also the TEMP gauge... the arm on the gauge doesnt go up as high as it would without the kpro..anyone get these problems?


edit: just saw on page 5 about the temp gauge running lower but is normal, however.. my temp gauge does go up eventually and goes right back down when i turn the heat on, does that mean the car is overheating?

You might have the same problem i did. you need to connect the stock ECU to the FanC pin. I posted the fix here somewhere.

[TheGrayCM]

I was having problems with my Hondata and it wouldnt read A/F or datalog. well I got my Ecu repaired and now Im comin up with a Vtec oil switch malfunction error code. I tried to switch the negative and positive wires on the VTC, but still no luck. Have any of you encountered this before and if so, is there any way to get it taken care of? Thanks

Trace the VTec pressure switch wire, sounds like it is not hooked up. the VTPS is normally closed to ground and opens when the VT solinoid opens and sends oil pressure to the VT system.

I have the wires two wires from the harness hooked up to a connector to the vtc oil pressure valve that I bought at Acura.

Alright. So last week, before I changed back to my stock ecu, I used my multimeter to see if there was currency flowing and it was confirmed there was currency flowing thru the vtc wires to the actual vtc oil pressure switch on the side of the engine. Im really planning on giving up, but I'd rather not. Would any of you be able to help me out on this one? Thanks

[neoryan7]

So what is wrong with the car when you try to drive it? It doesn't go past 3k rpms? I can't remember.

did you try to clear the code in kpro?
are you low on oil or running thicker oil than 5w20?

[TheGrayCM]

So what is wrong with the car when you try to drive it? It doesn't go past 3k rpms? I can't remember.

did you try to clear the code in kpro?
are you low on oil or running thicker oil than 5w20?

My oil level is fine and I always stick with 5w 20
Here are the problems:
-Engine cranks rough when starting or shutting it off.
-Wont allow me to pass 3800rpm
-Ive tried to clear the code on my Kpro, but keeps popping up
-VSS stays at a certain MPH when datalogging (first datalog stayed at 158MPH and 48mph another time.)
-Before I switched back to the Stock ECU, I had problems getting my car to crank. Sometimes, i would have to wait a bit then try to start it again. Didnt feel like the battery was dead cuz it still cranked.

[timot_one]

When you say it won't read the a/f or datalog, will it display the values of the other sensors in your display screen?  When was the last time you updated kmanager?  What OS are you running?

[NVA-AV6]

So what is wrong with the car when you try to drive it? It doesn't go past 3k rpms? I can't remember.

did you try to clear the code in kpro?
are you low on oil or running thicker oil than 5w20?

My oil level is fine and I always stick with 5w 20
Here are the problems:
-Engine cranks rough when starting or shutting it off.
-Wont allow me to pass 3800rpm
-Ive tried to clear the code on my Kpro, but keeps popping up
-VSS stays at a certain MPH when datalogging (first datalog stayed at 158MPH and 48mph another time.)
-Before I switched back to the Stock ECU, I had problems getting my car to crank. Sometimes, i would have to wait a bit then try to start it again. Didnt feel like the battery was dead cuz it still cranked.

With that many sensors not reading right it is no wonder you are having the problems you have, I would go back to basics, start with grounds and make sure the wiring is right.......

Another thing I would do is go thru every sensor and see which are reading correctly and which are not, then you can look at the group that is not reading right for eaither a common ground or ref voltage that is mis-wired. If all the wiring looks good then possible a bad ECU......

[neoryan7]

My vss doesn't read correctly also. the mph depends on if you checked the box that says "no speed sensor-provide constant speed signal" the harness doesn't have it hooked up.

If your having trouble cranking, your cranking fuel trim should be 60%. While turning the car off the engine will do a quick shake, not smooth like stock. Probably because of the motor mount control unit not hooking up OR your stock ecu is not getting rpm input to adjust for engine vibration OR because the harness shuts off the car a split second before the engine leaving it to run a split second longer and basically disconnecting the battery.

Are you auto or manual? autos automatically shift at 4000rpm no matter how much you mash the throttle.

Lastly what tune are you using?

[asnstyle22]

2 questions:

1. is the civic si primary o2 sensor wide band? i think if we use that, we wont need to solder the ends, i think its a female connector unlike the male connector on the rsx-s

2. with the kpro setup, is the immobilizer disabled?


thanks!

[timot_one]

I'm pretty sure you can use the Si primary A/F, but I'm not sure about the connector.  You can get one made by casper electronics, like I have on my car.  I have my immobilizer disabled.