momodc221

I have tried everything my vtec on my 95 gsr just wont pop. i changed the oil, cleaned the filter, wire the vtec to the ecu, checked the solenoid, i just dnt knw. if i cnt figure it out im gonna take it to the shop. anyone knw anything else it could b let me knw.

HondaPartsHero

What ECU? Any codes? What RPM does the engine rev to?

momodc221

RPM is at 1and a half but when i drive it, it will stay at 2. i have a code but it have to do with the water switch or something i know thats not it. one of my buddies told me my center cam cap might be clogged. could that realy make the vtec not pop? i did the test on the solenoid its clicks when not running but i tested it while running no click or rpm change.

doood

iTrader: (1)

is the car getting up to operating temps? vtec will not engage otherwise.

momodc221

it dose but it takes awhile.

doood

iTrader: (1)

why dont you fix your cel issue then report back?

el crapitan

if you'd just swapped the motor, or haven't had this running before, just so you know, the gsr vtec switchover is very subtle. not like a b16 or h22.
which intake manifold are you running? which pcm? what are the exact codes? is this a swap? or original chassis?

HondaPartsHero

Pull the code it may have everything to do with why it isn't working. What do the RPMs rev to at the highest point? What ECU?

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/how-pull-cel-d4-srs-abs-codes-code-lists-1901557/

Seriously don't post again until you put up the code. There is no "water switch" code.

B serious

iTrader: (1)

There's a coolant temp switch issue? You know the VTEC solenoid and coolant temp sensor have the same style plug. You probably plugged them into each other when u swapped the motor. Check that.

Also, VTEC relies on coolant temp to operate. It wont operate till the ECU knows that the coolant is up to operating temp. VTEC engagement relies on quite a few things including coolant temp, oil press, speed sensor input, tps position....etc. Read the sticky thread about troubleshooting VTEC inoperation issues.

If you have a code for the "water switch", that could DEFINITELY be it.

Check what I suggested. Pull the code. Post the code here. Post which engine and which ecu you have. When did this problem start? more info helps. The info u gave us kinda sucks.

Whiterice-gsr

^^^^ x2

momodc221

yeah the code is it flashes 6 times fast. and i looked around the motor and i found something. were the thermostat is the connector is gone and the wires are cut off. so tht might b it. i need to get another connector.

HondaPartsHero

Which ones is it the fan switch or the TW sensor? The thermostat connector is the fan switch and wouldn't cause the code, the TW sensor missing would however and is code 6, which will prevent VTEC from engaging.

Gsr-teg23

hey couple things does your rpm gauge work becouse i know on mu buddies gsr his didnt work after his swap either and when he fixed the rpm gauge problem vtec worked great. and as far as b18 not cracking hard??!?!?!?! i have a 97 gsr just hit 204,000 and my **** its hella hard atg 6500 so you should def know when it kicks in!

momodc221

yeha its the fan switch. but i want to check out the tw switch never seen tht. i might just need a new tw switch.

B serious

iTrader: (1)

ORLY??? GSR VTEC with the stock P72 ECU is at 4400 RPM. U sure u know when it "cracks"? 6000 RPM is when the butterflies open and GSRs start movin. Nothing perceptable happens at the 4400 RPM VTEC mark. So..it's actually fairly difficult to tell when VTEC is active with a GSR.

01oemTeggy

In my case the cat was bad. Check that as well.

doood

iTrader: (1)

typical h-t'er

momodc221

i have two ecu i have a jdm pr3 and a p72 usdm. i thought it was the ecu but i was wrong. its suppose to pop vtec around 5500rpm. i looked up the cell 6 and wht parts are associated with fixing this part and ive only gotten the ect switch/tw switch like hondpartshero said. thanks for tht info i hope this work let you knw how it goes.

B serious

iTrader: (1)

If you have a JDM B16A ECU, then VTEC would turn on around 5500 RPM. The USDM P72 turns on VTEC at around 4400 RPM and it's not very noticeable at all.

momodc221

my pr3 is off the inetgra xsi those ran b16a also.

momodc221

got all my parts going to put them in today will let you knw how it goes.

Whiterice-gsr

heres a step by step vtec troubleshooting guide that hondapartshero posted on another thread.
https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

momodc221

thank you everyone. VTEC WORKS!!!!!!!

El Chiva

i have a f23a1 engine i dnt wanna put turbo in my engine but i wanna add a bit more power how can i do that or what parts can i use?? like example intake, headers, etc.....

Whiterice-gsr

so what was it?