Ok, I have a 88 CRX SI that has a 1st gen B16. I converted everything to OBD-1 to pass California BAR, which I passed. I have the S1 Cable transmission, with realy short gearing.(4200rpm 5th gear at 70mph) I have no CEL's, Runs strong.
Mods are AEM CAI, S2 IM, DC header, S2 Catback, and stock cat.

Well I went WOT on an open road for a 4th gear pull(2k rpm to 6k rpm) and vtec didn't kick in? It kicks in 1st-3rd, but didn't in 4th. Its a stock computer, USDM P30-A00, vtec at 5200. I have never tried 5th gear because I like my license.

I also have a P05 chipped with a Type-R basemap with bolt-on's, but heard its not good to run it on a engine its not made for.(To see if vtec kicks in at 4th gear)

Anyone with a DelSol vtec have this problem? I searched the archive and didn't find much. I don't understand why it works 1st-3rd but not 4th?

 

anyone??? I have a track day coming up and want to figure this out...

 

electronic VSS in the trans, or feeding the ECU off the signal from the cluster?

 

VSS Signal is in the cluster, I didn't convert to VSS in transmission...

 

Anyone?

 

oil pressure with RPM load?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STREETWERKZ &raquo;</TD></TR><TR><TD CLASS="quote">oil pressure with RPM load? </TD></TR></TABLE>

What do you mean by that? Im sure the oil pressure is good because the light has never come on except before start-up. It doesn't burn, or leak oil at all, and its full.


Im thinking it has somthing to do with the TPS maybe? When the car is fully warmed up, the rpms bounce from 750 to 1250 for 10 seconds then idles at 700rpm. Also, when it does this, I can push on the pully for the butterfly on the TB and it stops bouncing.

 

Well I swapped out my ECU with the chipped P05 I have.(Disconected the battery, Removed the main fuse, Plugged it in, installed main fuse, connected the battery, let it idle for 20 minutes, then went for a drive.) Same thing, 1st-3rd Vtec at 5000, 4th nothing... Im confused, what else could it be?

 

I'm far from an EF guy, but I seem to recall something about the pulser unit in the cluster causing something like this. (signal gets muddy over a certain speed and the ECU sees the wrong signal)
It was fixable, fairly easy, but my lack of searching skills isn't turning up anything.
A post in the EF forum may help you get your problem solved. (if that's the problem)
https://honda-tech.com/zeroforum/3

 

Thanks, I made a post in the EF forum. Will a obd-2 VSS from a AUTO transmission work in a cable S1??? I have 2 laying around, along with a 95 GSR guage cluster and wiring harness I could swap over if need be... Thanks for your response Alex

 

Still haven't found a solution....