EG-SIXV-TEC

Hi i been driving my vx a while now with it redlining at 5,500 rpms. idk and how do i get it to rev oem stock at 6,000 rpms. it use to rev that redline b4
for a while now ive been driving it right after ive done a diffrent trans swap a y8 transmission manual. with a exedy light flywheel/clutch. it didn't come with a speed sensor so i bought one the vx trans sensor looks diffrent teeth number of it can this cause the prob. i didn;t know if i could use the vx ss so i bought a y8 one.

also ive run my vafc hack into my d15z1 for a while idk could that cause the rpm gauge to redline @5,500 rpms???


whats wrong with it how can i fix it. today i removed the vafc hack boomslang harness and it still redlines at 5,500 rpm???

what is wrong with it?????

grumblemarc

iTrader: (4)

Why? Get that crap off of there.

EG-SIXV-TEC

i took that thing off and sold it to my friend already. but it still redlines to 5,500????? why is it like that the redline is at 6k but it don't do it anymore????

whats causing it????

grumblemarc

iTrader: (4)

Why mention it then if it's not in the equation? If it's not installed it's not a factor. What else has been hacked up on this car?

VX's have tachs? If so most likely it's just not accurate.

Yesidriveacivic

vx's all come stock with tachs
Are you really trying to squeeze 500more Rome out of a d15z1accIdent drive a stock vx and I've never made it past 5500, only times I've been close are accelarating in 1st or 2nd gear. You put in a different tranny, but still.... the base isn't worth it...There's also a good chance you're at 6k but it's reading incorrectly

deschlong

iTrader: (8)

This, esp. since you put in a different transmission. VXs don't respond well to new transmissions; this was an idiotic idea. They're built for fuel economy, not goin' fast.

Also, if you want help, use correct spelling and grammar in your post. Lots of people won't take the time to try to decode that mess.

EG-SIXV-TEC

so the transmission causing the reading to be off??? i also did that bc my vx one is no good it would grind and sometimes pop out of gear came with my car like that. so i changed my transmission to the y8 one. and ever since it don't redline to 6k like it should anymore. could it be it messed up my oem rpm gauge tac???? also when i had my vafc on the rpm seems wrong like the vafc was 200 rpms off lower than the actual tac.??? idk



how can i fix it. whats wrong???

KevinVX

If you're going to molest a Civic, please don't molest a VX. They're hard enough to find as is.

Yesidriveacivic

I just drove home, and tried getting mine to redline. It maxed out at 6k. TBH, you really don't need to worry about revving it up to redline.... unless you're going head to head with geo-metros, you might as well just save the engine.

EG-SIXV-TEC

yeah but still i want to know why is it redlining at 5,500rpm instead of the 6,000rpm redline. if i sell the car i want everything to be in good condition. especially the tac. its annoying. before it use to rev redline at 6k.
why the hell is the thing reving redline to 5,500 rpm instead of the 6,000rpm.

what is broken i want to fix this.....

Marvin1985

iTrader: (5)

Your English/grammar is broken!!! But seriously why are you running the vx that high in revs? It's not a z6 at very least

Yesidriveacivic

anyone buying a vx is unlikely to want to race it, and odds are they wouldn't even notice it. It really isn't an issue. If you really, really want it to be accurate for the last 500rpms, then hopefully somebody on here will have a solution, but odds are not...

jbpnoman

You have the wrong transmission, and probably the wrong VSS in said transmission. You're also reading the factory tach, which is notoriously wrong. Get the correct VSS. If that doesn't fix it, get an aftermarket tach for testing purposes to see if your assumption is wrong.

EG-SIXV-TEC

i have the original vx trans vss, and i bought the y8 one for that trans. will the vx vss trans. fit on the y8 trans one i have now???

i will first try that.
and idk. but will the vx one fit inside the y8 one i remembered the gears on the vss was one had more than another i forgot wich one though.

i want to know if it will damage anything bc the gears vice versa IDK????

DCRB

the vss has nothing to do with the tachometer. it is only for the speedometer. for accurate mph use the y8 vss.

i'm surprised no one has asked this yet, are you throwing any codes?? cel on? what's the condition of your plugs, wires, cap and rotor?

EG-SIXV-TEC

Ok the spark plugs/wires are fairly like 6 months old. No engine lights on. A year ago i had a leaky dizzy icremoved cleaned it and changed the o ring. But now i checked last it wS hella leaking down to the bottom coolant hose. I was thinking it might b the cause.
can the sensors inside the dizzy mess that up? I hope not ecu or other.
I will change on the weekend.

JRCivic1

'92-95 Civic Tach's are notorious for failing... especially after nearly 20 years of operation. The common error is that they are no longer accurate. Their operation, to the casual observer appears to be just fine, but if you REALLY pay attention, you will find that as you rev thru the RPM band, they get slower and slower. Sometimes they work... sometimes they don't.
The dead giveaway that it is suffering from this issue is the VTEC crossover point: IF you hear VTEC earlier than it should, then your redline is most likely still 6K, but the tach reads less.

I suggest you swap your gauge cluster out with a properly functioning one from one of your friends cars...

Case in point:

My personal EG Coupe has a H22A4 in it... fully built N/A. It redlines at 8400 and VTEC crosses over at 5800. When my tach gets lazy, it appears that VTEC crosses over at 5000, and the redline is at 7100. Reading the datalogs however, shows that everything is fine between the engine and the ECU. The problem is the tach.

speedjunkie_g35

I spent at least a grand due to my tach being off by a 1000 rpms. After spend and spending trying to fix. I finally installed a autometer tach only to find out it was redlining at 8200 like it should all along.

Yesidriveacivic

It's a Vx, You won't hear V-tec at all

Soundbyte037

Have you done anything with the ecu in the past? Or did you purchase the car with this problem? Cause I once bought a hatch si that had a similar problem and it turned out the car had the wrong ecu

EG-SIXV-TEC

no before it was running very good oem d15z1 ecu. i just noticed this i guess right after i did the d15z1 vx trans out because it was acting up. popping out of gears etc. right after i installed the y8 trans and y8 vss. i ran a vafc also. but i took the dang thing out now still revs redline 5500 rpm. idk why?


the distributor outside and is hella leaking inside though didn't have a chance to check it out. it was leaking for a long time now but now seems worse?

could the wed dizzy oil affect the redline. also i heard the ground near the thermostat could that affect the redline off????