No VTEC (searched) - Honda Prelude Forum

aM1t · 08-05-2009, 12:11 AM

Ok guys i need help the VTEC on my h22 doesn't kick in.
Oil level is good, VTEC solenoid clicks when i jump it with a 12v source, cars fully warmed up, and its completely stock/original motor.

I'm sure its in my head but i thought id mention it anyway, in 1st gear theres no VTEC pull nor the sound of the secondaries in the IM opening(motor doesn't sound any louder). In 2nd i feel like I'm feeling a pull but there's no audible difference.

I noticed my VTEC stopped kicking in when i tired a P28 chipped with a H22 basemap in my lude, but even though I'm now back to stock P13 VTEC still doesn't kick in.

Could it be that my secondaries aren't opening? I'm really tired of not having VTEC guys so any and all help is more than appreciated.

-Thanks.

yohan420 · 08-05-2009, 06:29 PM

Why did you originally change to P28 chipped ECU ?

Did you change anything else?

Was your car always wired for vtec?

aM1t · 08-05-2009, 08:19 PM

Quote:

Originally Posted by yohan420

Why did you originally change to P28 chipped ECU ?

Did you change anything else?

Was your car always wired for vtec?

just for ****s and giggles, it had a stock h22 basemap on it.

nope nothing else changed.

yes came factory with the h22.

Sonik_Fury · 08-06-2009, 01:28 AM

I'd try and figure out why your solenoid isn't getting a signal in the first place....all connections are tight between the ECU and solenoid?.........ECU sending signal?

yohan420 · 08-06-2009, 07:12 PM

x2. hard to take a multimeter to test it though with the car not in drive :|

Check continuity through the wires ...

aM1t · 08-06-2009, 09:50 PM

you guys think that maybe the pins on ecu arent making contact with the harness plug?

Sonik_Fury · 08-07-2009, 01:57 AM

Quote:

Originally Posted by aM1t

you guys think that maybe the pins on ecu arent making contact with the harness plug?

Yes possibly......

jsmooney · 08-07-2009, 06:35 AM

gosh guys, I know the answer. VTEC fluid. I added it to my Si non VTEC and it turned it into a VTEC monster

aM1t · 08-07-2009, 01:25 PM

^^Seriously?^^

The only thing about the pins not making contact that concerns me is then why is everything else running fine.

jsmooney · 08-07-2009, 01:30 PM

it's possible a pin could have come loose or the connection could be dirty. the wire could have a short or something in it.

Sonik_Fury · 08-07-2009, 02:38 PM

Have you tried switching for a known good ECU, got any friends with ludes?

yohan420 · 08-11-2009, 05:21 PM

When I had first completed my vtec swap, I noticed that when I put the new plug on the vtec solenoid one of the pins slide down in the harness and didn't connect properly.

How I fixed it is that I took a pair of needle nose pliers and pulled the pin up nice and high, I never had the problem again - mind you I did get a code 22 or 23 prior to this happening..

Try this out ?

aM1t · 08-11-2009, 05:35 PM

hmmm are you talking about the grey plug ontop of the vtec solniod?

I've tried a p28 with a h22 basemap, and i know it works fine because the lude i pulled it out from ran great, and the VTEC popped everytime.

yohan420 · 08-12-2009, 01:38 PM

With your last post, you said you tried a p28 with an h22 basemap from another car, I'm assuming you meant the vtec worked in that OTHER car ?

Check the plug I mentioned, ensure the wires are making good connect, pull a plug off another sensor to compare where the wires are set.