this might come from left field, but i have noticed a few cars here and there with a cam trigger seem to have problems with their vehicle speed sensor. i think it might be an AEM EMS only problem. im just looking to get some feedback from aem ems users thats are using a hall effect cam trigger. does your vss work? did you have trouble with it at all after the switch.

edit:title should have read cam trigger

 

Out of over 100 cam trigger kits i've sold, i've only heard of this problem with Ryan's car and with one race car i did. Joe had some issues at first, but changed his harness i think and it started working.

 

All the problems I've seen are from cars that still have the hacked up engine harness that's 20+ yrs. old. It doesn't matter if you're building a street car or race car, it's always best to just buy or make a new harness. That way you can add all the provisions for all your different sensors.

 

i would also imagine some of the problems you are seeing are caused by the terminal pins being expanded too much from probing them, and then they have little to no contact.

 

Remember we have a GSR vss hooked to a D series harness, if that makes any difference?

We have done a lot of different test, I can't remember if we've plugged in a D series vss and tried it.

 

Yes we tried that Byron.... no workie.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Out of over 100 cam trigger kits i've sold, i've only heard of this problem with Ryan's car and with one race car i did. Joe had some issues at first, but changed his harness i think and it started working. </TD></TR></TABLE>

maybe only the cdi users?

im just trying to make a little more sense of this. ive never heard of someone having to do all this work to make the VSS sensor work with their swapped b series motor because the engine harness was junk or the connectors were loose.

change harness, connectors, vss. all have continuity and still no workie?

 

You have another EMS you can try?

 

I don't have the cam trigger but my vss does not work and I have tried new sensors and messed with the wiring. Sometimes it will work and other times it does not work.

Ryan just do what dturbo did with the sensor on the half shaft.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rota92 &raquo;</TD></TR><TR><TD CLASS="quote">

Waiting to go motec to set all that up if needed lol

I'll get back at the VSS if it needs to be, but I can tell when the wheels are spinning and when they aren't except for that finite little bit. But its only a ~600 hp car so there aren't major issues</TD></TR></TABLE>

Dave has AEM and I am pretty sure he has it working with his computer. Shoot him a pm.

 

He runs a hall sensor from his intermediate shaft. Non Honda VSS.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tepid1 &raquo;</TD></TR><TR><TD CLASS="quote">He runs a hall sensor from his intermediate shaft. Non Honda VSS.</TD></TR></TABLE>

Yes I know but it sounds like Ryan thinks he can not do that unless he has motec.

 

A hall sensor on the intermediate shaft sends the exact same signal into the ecu as the oem honda vss.

 

I run the oem honda VSS with my motec.

 

Yeah and if Tony does it.... anyone can.

From the intermediate shaft.... can you define how many pulses the ECU needs to see? Or are you stuck with 5?

 

With motec it's totally configurable, and i'm pretty sure it is with aem as well, but i'm not 100% on that.

 

devon from aem told me it would work. we messed with it for like 2 minutes on joe's dyno, but did not get it working proper.

 

has any other AEM users on honda-tech installed the cam trigger, and have absolutely no issues with the VSS?

 

my car had issues BEFORE i installed the cam trigger. my vss now works, it was a pain in the *** and i still cant tell you exactly how/why it works now...but im just going to roll with it


we have installed cam triggers on several cars with out any issues. we pretty much wont mess with a honda with AEM unless it has a cam trigger, we have even done a cam trigger on an h22 car with no issues, and we all know h22's come factory with pain in the *** problems haha

i'll be doing another cam trigger on a b series in the next week or 2. i predict it will work perfectly.

im 100% confident is a problem with either the cars or the aem boxes themselves, not the cam triggers.

 

How about this.... to narrow it down a bit....

What AEM box are people using that it has issues with?

I believe Ryan is using the 30-1040 unit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo-charged &raquo;</TD></TR><TR><TD CLASS="quote">my car had issues BEFORE i installed the cam trigger. my vss now works, it was a pain in the *** and i still cant tell you exactly how/why it works now...but im just going to roll with it


we have installed cam triggers on several cars with out any issues. we pretty much wont mess with a honda with AEM unless it has a cam trigger, we have even done a cam trigger on an h22 car with no issues, and we all know h22's come factory with pain in the *** problems haha

i'll be doing another cam trigger on a b series in the next week or 2. i predict it will work perfectly.

im 100% confident is a problem with either the cars or the aem boxes themselves, not the cam triggers. </TD></TR></TABLE>

i never thought it was a problem with the cam trigger but maybe the aem boxes. the cam trigger works like a charm and does what its supposed to.

i was just figuring maybe the reconfiguring of the boxes for the trigger, or the cdi systems might be messing with the signals.

i never had my b series running without the trigger so i cant compare just looking for feedback from trigger users.

I guess im wrong

thanks for the responses though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">has any other AEM users on honda-tech installed the cam trigger, and have absolutely no issues with the VSS?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Out of over 100 cam trigger kits i've sold, i've only heard of this problem with Ryan's car and with one race car i did. Joe had some issues at first, but changed his harness i think and it started working. </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">With motec it's totally configurable, and i'm pretty sure it is with aem as well, but i'm not 100% on that.</TD></TR></TABLE>

it is configurable, not quite the same flexibility as the cam/crank pickups, but assuming your in the correct "window" (number of pulse/rev etc) it is configurable to work

also, the cam/crank pickup is totally independent of the VSS, it has its own seperate input

 

every vss issue ive seen is due to the harness connector. people will say yeah, but mine still didnt work after a harness swap, but they fail to mention they did not put a new harness in. these harnesses are closing in on 15-20 years old. Add in all the road grime on that speed sensor connector, plus being plugged and unplugged a million times on the swapped cars, plus coolant running into that connector everytime someone swaps a thermostat, and you are begging for issues. In the cases I couldn't fully clean the connector, I would swap the whole connector or just the pins, but most often connector cleaning and retensioning the pins took care of the issue. Ryan really needs to get an oscope on that car and see if the pulse at the vss connector matches the pulse at the aem connector. i doubt that it does.

 

shove a wire into the t3/vehicle speed input, and tap the wire to ground, u should get a vss/mph reading, also monitor t3per

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rota92 &raquo;</TD></TR><TR><TD CLASS="quote">Wanted to Borrow: Oscilloscope in CT lol

I can try to brake clean the crap out of the connector and such but it def. has seen better days!</TD></TR></TABLE>

battery post cleaner works good for cleaning out the corrosion. then use a small pick to tighten the pins to they fit better.