hello i am new to the forum but have been doing alot of reading and this seems to be a reliable place, anyway on to my problem... i have a 95 gsr in a 91 hatch pretty much stock other than s2 intake mani, intake and exhaust, and it drives fine has normal pretty normal power however it wont rev past 7 sometimes will go to 75 but not further on the street or out of gear all my plugs are good and oil levels are good, only mods leading up to this problem are a new stat, fresh coolent and a cd player. iv done my reading and found that it could be the dizzy, vtec sil., ecu and low oil but oil is good and vtec dose kick at 4400rpms like normal so im guessing ecu or dizz problems but before i start buying new parts any other suggestions??

gsr/gsr trans only has around 79000
thanks for the help

 

im guessing a gsr ecu ?

when you say it wont rev higher, its hitting a rev limiter ?

 

Yes Gsr ecu and no cel I will add no not a limiter it just seems to cut out

 

If you have access to another distributor, I would try that. Sounds to me like an ignition break up; coil,cap,rotor,or igniter.

 

thats what i was thinking i was looking for other possibilitys, one of my buddys is a tech for chevy and went to wyotech hes comming over to check it out sometime within the next day or 2

 

stock fuel pump?

 

yes stock fp

 

Ignition trouble shooting.

http://www.team-integra.net/forum/bl...eshooting.html

 

ill test all that later today but i have spark its just in the upper rpms (6-75) when i loose power but i will check it none the less because i must figure this out its driving me nuts

 

did some troubleshooting and noticed that my fuel pressure gauge drops to around 30-35 psi when revved up so now im thinking the reg. or pump

 

that what i was getting at, 20 year old pump. flow might be lower. is fuel pressure lower now than it was before? u can try to swap regulators with another one to see

 

i dont know if its lower than before because i never really watched it before when it was being revved but iv got a fp and im going to buy a reg, and i figure i might as well do the filter as long as im going that far

the pump i have is a wlabro 255 (b0osting in the future) will that be a problem with stock injectors and reg?

 

bump

 

As long as you have the gsr injectors and reg there shouldnt be a problem. If you were to put injectors you could turn it down with the reg.

 

idk why u specifically said gsr but any sohc and b series injector and reg will do. psi should be 42psi with an open vacuum reg

 

I think I have the same issue as you, but mine cuts out higher.

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/98-gsr-early-redline-2954029/

 

sounds like a fuel delivery problem. I have heard of the walbro fuel pumps having this problem before...

 

it has stock pump^^

and i would have changed the reg. by now but i read on the forums somewhere that their is a difference in regulators

 

you said this first
now you say this
which one?

 

it has stock one....but i have a walbro to put in it suppose i should have been more clear

 

so i put the walbro 255 in and now the problem has either worsened or its something els... the engine will rev to high 7500-8300 but only if i open the throttle a little bit...at wot it will rev to around 5000-5500 and losses all fuel pressure, when driving it feels like fuel cut. i swapped on my sohc fuel reg. before the fuel pump change out and the old problem continued so regulator is ruled out
maybe tps?

 

what the fuel pressure now? calibrate the tps correct .5v closed, 4.5v fully open throttle

 

I found out the issue with my car. It was the stock intake tube collapsing. You might want to look into that before spending more coin.

 

fuel pressure remains at 40 @ idle

 

Most Honda's run pretty good without a TPS, it will use MAP to calculate throttle angle as a backup.

GSR's cut out at 7800 right? I would use an digital timing light and check the actual engine RPM. Honda tachs are kinda funky, especially the older ones. My 91 hatch is off by 450rpm at redline, and every so often the tach will surge and give the correct reading, verified it with a timing light myself.

There is another issue that will cause a skewed tach reading, generally the ignitor output will be erratic at higher speed, hell the switching end of it for the coil could also be erratic, causing the cutoff. either case replace the ignitor and retest the coil.

OE injectors? If your injectors are over rated duty cycle it can die off so to speak. But you make it sound like its when you hit fuel cut at max speed, it just hits a brick wall. Or does it break up when you accelerate it standing still?

And lastly, does it have a cat on it?