1994 Honda Accord V-Tec

Tiny
JEFFWB
  • MEMBER
  • 1994 HONDA ACCORD
  • 4 CYL
  • 2WD
  • MANUAL
  • 35,000 MILES
Hello, I have a 94 accord LX And have Swapped motor to EX Motor (Non Vtec To Vtec). I have a diagram and the ecm for a Ex. I followed the diagram and ran wires to Hook up Vtec Selenoid and Vtec Pressure switch. But still No Vtec. Can someone Please HELP! Thank You.
Do you
have the same problem?
Yes
No
Sunday, March 29th, 2009 AT 10:03 PM

10 Replies

Tiny
KHLOW2008
  • EXPERT
Hi JeffWB,

Is the ECM showing and DTC?
How do you know the VTEC is not functioning?
Was this
answer
helpful?
Yes
No
Monday, March 30th, 2009 AT 8:48 AM
Tiny
JEFFWB
  • MEMBER
I have it wired according to diagrams (4 diagrams all say same thing). I am driving 2nd gear up throttle about 3/4 or half way and no pull or increase of power at 4400 RPM. Up till redline. My old motor was not vtec however felt a lot stronger then this one. Old Motor could hit my top speed limiter (115mph) with potential to go further this one barely can get up to 100mph. I am thinking of replacing V-tec selenoid and pressure switch as I am not sure how to check if they are working. To check the selenoid they say just to look inside it and see if its clean which all looks good. And for pressure switch to make sure the diaphram in it moves easy which passed that also. So I am kinda a a loss of what to do next. Also sorry not sure what you are meaning by DTC. Is that a trouble code cause I have a Check engine light.
Was this
answer
helpful?
Yes
No
Tuesday, March 31st, 2009 AT 10:22 PM
Tiny
KHLOW2008
  • EXPERT
DTC = Diagnostic Trouble Code.

Bridge the SCS connector and read the blinking of the CEL to get the DTC. Let me know what you find.


http://www.2carpros.com/forum/automotive_pictures/192750_SCS95Accord_7.jpg

Was this
answer
helpful?
Yes
No
Wednesday, April 1st, 2009 AT 8:15 AM
Tiny
JEFFWB
  • MEMBER
K I will give that a shot and let you know. I the mean time maybe you could confirm for me I have looked on a website, a chilton's book and a haynes book and all say V-tec selenoid is pinout A4 while pressure switch is D6. But on my existing harness D6 pinout has a wire in it and not quite sure were it goes all diagrams tell me if its not vtec there is no wire there. So little confused wire is RD/BLK looked up the wire according to color and I says it runs to tranny control unit but my car and existing harness is for a Manual Not Automatic. I have a mechanic friend who uses allDATA at his shop his diagram says same thing he said best bet would be to tap into the wire and see if vtec kicks if not take it back off. Little confusing
Was this
answer
helpful?
Yes
No
Thursday, April 2nd, 2009 AT 11:28 AM
Tiny
JEFFWB
  • MEMBER
Ok I got the trouble codes I think I have 2
I have 7 Quick flashes Then I have 2 Long 1 med and 1 short. Tried to go to my local autozone or auto supply to plug in diagnostic tool but nobody has one.
Hope this helps Thank you very much for feedback
Jeff
Was this
answer
helpful?
Yes
No
Thursday, April 2nd, 2009 AT 9:06 PM
Tiny
JEFFWB
  • MEMBER
Hello again I have found the first trouble code sensor came unplugged fixed it. The other code I have figured out is a code 22 which according to a site I found online is faulty or bad Oil Pressure Switch a.K.A. Vtec pressure switch. So I am looking in at replacing have to special order on saturday should be here monday or tuesday will inform you if problem is solved or persists. Thank you so much for your help I love this site already. Thank you again.
Jeff
Was this
answer
helpful?
Yes
No
Friday, April 3rd, 2009 AT 2:31 AM
Tiny
KHLOW2008
  • EXPERT
You are welcomed and thank you for the compliments. Enjoy your stay here.

You mentioned D6 as having Red/Black wire, guess you have read the terminal wrongly. That should be D11, wire for the TPS. See diagram for terminal identification.


http://www.2carpros.com/forum/automotive_pictures/192750_ECMConnector94Accord_1.jpg



Code 22 is the VTEC switch circuit, did you test the switch terminals for continuity? It could be a wiring fault instead of the switch fault.
Was this
answer
helpful?
Yes
No
Friday, April 3rd, 2009 AT 1:10 PM
Tiny
JEFFWB
  • MEMBER
K I will give that a shot my diagram is way different it goes from 1 left to 11 right and 12 left to 22 which doesn't make sense to me but I will definetly check that out
Was this
answer
helpful?
Yes
No
Saturday, April 4th, 2009 AT 2:49 AM
Tiny
JEFFWB
  • MEMBER
WOW you were right wired wrong my god it feels so nice. Thank you so much that pinout pic really helped me I would have never figured that out. Thank you.
Was this
answer
helpful?
Yes
No
Saturday, April 4th, 2009 AT 4:26 AM
Tiny
KHLOW2008
  • EXPERT
So you have solved your problem :)

Cheers.
Was this
answer
helpful?
Yes
No
Saturday, April 4th, 2009 AT 7:40 AM

Please login or register to post a reply.

Recommended Guides