So I finallygot myecu chipped and they added vtec and wired it up to the ac relay but I dont hear it hit like my oldsingle cam that I used a vafc2.

Do you think that the relay is bad I needto talk to some one with experience in adding vtec to ecus and wiring them up

 

bump I have been driving my car for 2 months with no vtec and I want it now.
lol

 

why is it hooked up to the ac relay? hook it up direct to the solenoid to computer. as well as the oil pressure switch

 

bevause the guy that chipped the ecu said it hadto be run through the asswitch in the ecu and then to a relay.

Is there a better way of doing this?

 

Itsnot running throught the harness it self its coming out of the ecu and into a relay that is mounted inside the car and then to solenoid.

I dont have the pressure switch hooked up iether. Someone please help if you look please give me some insight I am new to running chipped ecus but I hjave heard that vafc is just a hack and a chipped ecu is better

 

what ecu is it? if its a ps9 you can wire it direct to the solenoid the ps9 sends out 12v+, if its anything else, you have to wire it so the ecu trips the relay. I beleive the ecu grounds the circuit. You do need a relay but you can use any 4 prong automotive relay. Maybe your relay is bad, just wire one up to the proper pin on the ecu. Just look up how to wire a relay its pretty simple, the ecu would be your switched ground.

 

Ok the ecu is a pr4 I have to ac relays that I got at the junkyard.

I am going to run the wire from the ecu (ac output) to the relay and them from the relay to the vtec soleniod.

What do I do for the pressure switch? ground it out?

thanks for your help.

 

bump

 

figure out which wire on the ecu is the pressure switch wire. that connects to one end on the pressure switch. the other connects to the ground.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ef-hatchcrap &raquo;</TD></TR><TR><TD CLASS="quote">Ok the ecu is a pr4 I have to ac relays that I got at the junkyard.

I am going to run the wire from the ecu (ac output) to the relay and them from the relay to the vtec soleniod.

What do I do for the pressure switch? ground it out?

thanks for your help. </TD></TR></TABLE>


Hold on,,Is this one of these chipped ecu's for a 1-wire vtec setup? If so theres no need for the pressure switch at all....You just run the wire from the ecu to a relay then from the relay to the vtec solenoid.......But its meant to use the a/c relay that way you dont have to run all sorts of wires except the 1 from the a/c relay to the solenoid..

To use a normal 4 way relay you would hook up 86 and 30 to a fused 12v+,85 goes to the ecu a/c clutch,and 87 would go to the vtec solenoid

 

wait isnt pr4 a LS ecu...why not use a p28

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ALL-MoToR559 &raquo;</TD></TR><TR><TD CLASS="quote">wait isnt pr4 a LS ecu...why not use a p28</TD></TR></TABLE>


His pr4 is chipped for vtec. Read his very 1st sentence

 

here this should help you
http://technet.ff-squad.com/

 

thanks for the help guys I am working on it right now.

Can I go to the auto parts store and get a 2 wire solenoid?

 

Well I went and got a 2 wire and a 4 wire relay and it still doenst work so I am just going to run a vafc unless some one has more ideas

 

ttp

 

you could just buy a vtec ecu so it works properly, I have 2 chipped and ZIF socketed pr3's for sale. check my sig

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ef-hatchcrap &raquo;</TD></TR><TR><TD CLASS="quote">Well I went and got a 2 wire and a 4 wire relay and it still doenst work so I am just going to run a vafc unless some one has more ideas</TD></TR></TABLE>

That isnt right..Who chipped the ecu? If you have their number call them,,I ran the 1-wire vtec setup for years,it works perfect

 

Well I got it working but the relay keeps buzzing

I am oging to try to run a wire straight from the ac clutch pin on the ecu to the vtec solenoid

 

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

That isnt right..Who chipped the ecu? If you have their number call them,,I ran the 1-wire vtec setup for years,it works perfect</TD></TR></TABLE>

i chipped the ecu!the bin i put in there has worked on many other sohc vtec motors.if u serach on pgmfi.org ull see many people has used this program with no problems at all this is just small bugs that need to be worked out.but he failed to mention that it bin runs his car much better now them what the stock pm6 did,and vafc are junk *** **** thats good for nuttin.

 

^^ you chipped it, and your in the same town as the OP but you don't have any better advice than "all this is just small bugs that need to be worked out" help him out, tell him what to do..

 

lmao im am helping out out.goddamn i give him the chiped ecu out of my car so he could have vtec. fyi im waiting on a light with a magnifying glass in it. so i told him ill give u the ecu out of MY car and add vtec and thats what we did.he got tired of waiting so i went without so he could have vtec.

NEXT TIME KNOW THE WHOLE STORY BEFORE U OPEN YOUR MOUTH!