The car is a 1995 GSR with 76k original miles. No major upgrades whatsoever.
Here is the problem -
when I accelerate in neutral and I try to make it smooth, my rpms go up to about 2500-3000 and then drops down to 500, or less than that. Then it catches up and does the same thing all the time. I hold the pedal and it goes 3000-500 3000-500. If I push harder, it accelerates great and VTEC kicks on with no problems.

Same thing happens when I drive in gear (any gear now). I start smoothly, accelerate slowly and at one point it stops accelerating and works like crap until I push more. Then it will jump and go fast.

Also the car runs rich and makes bad gas mileage. See white exhaust and it gets black when VTEC turns on.

I checked IACV and it looks like new from inside. Everything is very clean in the engine bay. Remember, the car has only 76k on it.

I changed spark plugs, wires, and rotor cap. Made an engine flush. Put some injector cleaner in it.

Also checked my compression today and it shows 230 in all 4 cylinders.

Now, let me open my cards. I bought the car ripped off with cut wires, no interior, no exhaust. Put everything back together myself having another teg to look at. Did wiring connections to the ECU and every sensor with connectors from Home Depot. I am very accurate to details. Everything works properly in the car. It doesn't show any CEL, but if I unplug any sensor - it shows up. So I believe that my wires are ok.

I don't know where to start to look for the problem, so any help would be appreciated.

 

Is the ecu correct for your gsr? if it is your ecu maybe bad. If you see white smoke from your exhaust, could be sign of bad head gasket.

 

ECU is original. It was in place, just cut wires.

 

I'm thinkin you might have a ground somewhere, or something maybe plugged up. Could be Map sensor, Tps, or how about 02 sensor which could be causing poor gas mileage.

 

Check your throttle body plate for leaks, i had a similar problem, i just used some high temperature sealant and it idled perfect after that.

 

Thank you, guys, for all input. I think, I'll check my O2 sensor first, since I have an extra one laying around.
I've checked the throttle body many times. It sits tight and all its sensors were not cut and all good. If I unplug any of those, the CEL comes on and it idles either constant high or low depending on the sensor.
I'll buy something to check my TB for leaks tomorrow.
BTW, is it OK for GSRs to make 3000 RPM at 60 mph in 5th gear, 3500 at 70 mph, and 4000+ at 80? It seems too high to me. This is my second car after a VW, so I don't know much about tegs yet.
Thanks again.

 

Oh yeah, and I don't remember where I got my O2 sensor from! I think it came off of a Civic. Should it be a special GSR sensor or they all the same for integra\civic???

 

Regarding your gearing, it depends on your final drive.

My Type Si B18C does about 3300rpm (give or take) at 100km/h, which is 62 mph.

My gearbox has a 4.4 final drive which is stock, yours should be too.

 

there's no special o2 sensor, but if it doesn't get changed it get clogged, and since your running rich, you'll be clogging it even more. Your Gsr trans is in order, nothing wrong with it, my b16 transmission is 4500-4800 at 80 mph.

 

1. Is your check engine light on?
2. If your check engine light is on, what codes are you throwing?
3. Did you perform any type of upgrades or unplug any wires around the time the problem started?
4. Is your TPS and MAP connections correct?

 

haha that ****ing pic!!! haha i did an ls/v build with a buddie of mine and we did that stupid s*** and it did exactly what yours did lol *slaps self in head*

 

I wish it was that easy. In my case you cannot switch the two. There's not enough wire to reach a MAP sensor with a TPS connector.
I know I didn't mess with those sensors cuz they were not cut.
Anyways, tomorrow is gonna be a great day for my little champ. I love the car!

 

I mistakenly thought the same thing too but there is enough slack. If part of the harness was twisted (even a little) it'll make it appear as though they can't be switched.

What color tip to you have connected to your MAP sensor? Blue or Grey?

 

They are both gray. I'll make a picture and post it here later.

 

try adjusting your valves

 

Since it only takes a few seconds..temporarily switch them and see if the problem is fixed.

I don't think any of his valves are stuck open or closed since he's getting good compression.

I have a feeling it's a problem with the wiring...

 

I know it sounds like its out of left field but check your fuel pressure regulator. Trace the hoses and make sure non are clogeed, cracked, broken, or kinked. My old civic DD did about the same thing and it turned out to be the FPR. It wont trip a check engine code either. Just a thought

 

Changed the O2 sensor - still the same.
Checked connectors to MAP\TPS sensors for like 5th time now and there is absolutely no way they can be switched. However, when I unplug the TPS sensor, the car idles normal! If the MAP sensor gets unplugged - the car dies right away, which I believe never happened before. Going to get some carb cleaner to spray my TB and test-drive the car without TPS connected.
I'm pretty positive it is something with these two sensors or wiring to them. How can I clean them? I have a can of Mass Airflow cleaner, but don't want to mess anything at this point.
Thanks so much for all replies!

 

You should try changing out your tps, since it being unplugged seems to work better. Or maybe the tps sensor is not positioned correctly.

 

Ok, so I just got in a heavy traffic and the GSR showed her best. Runs smooth and stable with a TPS unplugged.
Finally got home, turned it off and started again after about 15 minutes. Idles very low, like 100 RPM, even died one time.
Plugged the TPS back and it does the same as before. Surging from 500 to 1000 and not stable idling.
I was told it's really hard to change a TPS sensor.
Damn, I don't want to spend money on something and finally get to the point where I need to change the whole wiring harness.
Going to clean the TB now. Will see...

 

Heres a link on how to remove tps sensor:

http://hondaswap.com/general-tech-ma...sor-tps-58326/

Heres another link on how to adjust it:

http://www.clubintegra.com/board/showthread.php?t=21792

Hope this helps out a bit

 

wow im having problems with my car too i have a 91 DA and it bogs out i dunno why

 

Was too busy to work on my car last days. Driving with the TPS unplugged for now. A little bit higher rpms in neutral, but it's just temporary. I've located an interior wiring harness and want to change it first. I realized that if it is something with my connections, I may change everything in my engine bay with no luck. Next step would be the TB sensors.

 

I would check the O2 sensor, and TB/Intake manifold for leaks. These are the most common things that go wrong!

 

resolved? i am having a similar issue on a b17a1 obd1 p28 crx si