tagar89

1996 Integra SE
168k
Stock

Idle is a little off but not bad

The problem is when i put the throttle at 100% it has no power. 50% to 100% is no different besides hearing the throttle plate open.

FP: 36psi idle
45ish Full throttle and with vacuum unpluged from regulater

Switchout out fuel pumps because i have one and no change
Switched out regulaters because i had one and no change
Clamped return line and it drove like it should

Checked airways and its clear

Airfilter is brand new

Thoughts

Thomas

tony_2018

Stock automatic, or stock 5spd.

Kamrons

have you checked compression?

tagar89

5 spd

No I have not checked compression. Because it doesn't feel like the problem.

At cruising speed it's fine. When I get to a certain percentage of throttle it shutters.

Checked tps
1 wire was at 5
The other one was progressive to 5v depending on throttle with no dry spots.

tony_2018

Check ignition timing, you'll need a timing gun.

tagar89

Ill do that and update...

tagar89

15ish degrees at idle

tagar89

Switched out the MAP from another 96 integra and nothing changed.

tagar89

Anybody? I'm stumped

tamboo

4.5 volts at wot for tps not 5.

https://honda-tech.com/tech-misc-15/...e-tps-2947986/

tagar89

Close throttle .5v
Wot 4.445

Sorry I was writing this way after I did the test

tagar89

175 psi compression across the board

B_Swapped93

just keep the return line clapped then...175 is on the low side for a b-series tho.

tagar89

Well it wasnt a wet test and they all matched. Im not worried about the compression. 175 dry is good with me.

-_- you cant be serious about keeping it clamped... that puts a minimum of twice the pressure and makes the return line pop off with a hose clamp on it.

Anyways what ive done

New cap and rotor
Rebuilt fuel injectors.
New fuel filter
Swapped fuel pumps and regulator

Runs a bit better but it just acts like the cam is flat, no torque 2500-4500.

tagar89

Going to recalibate the tps for the hell of it

B_Swapped93

you may just be expecting too much, I didn't see that you checked mechanical timing.


you say it runs good on twice the fuel pressure??(line clapped will do that).

tagar89

Checked the timing today. Marks are exactly where they need to be.

Full tune up

Every time I do something small get its a bit better. I'm comparing this to my 93 fwd sr20 that had 140hp stock and so does the b18b1. The other mechanics says it's flat. Recalibrating and cleanino today.

tagar89

Yes it ran better with more pressure. I know it's not a rocket but there should be more power then my girlfriends 98 civic dx

tagar89

So a p017x lean bank 1. Sorry forgot the last digit.

Lean..... no ****. Anyways changed out the upstream o2 today. i dont think there was a change but ill update tomorrow. Does anything i said correlating to the code pop any clues for anyone.

So it seems to drive fine at 50% throttle or less. Powers what it should be. You can feel it bog after a certain point and serge when letting off. Even though i didnt see any bad spots in the tps i might change it anyways. I calibrated it and nothing changed.

Thomas

Oaken81

P0171.

Did you check for vacuum leaks with a smoke machine? Injector balance test?

tagar89

Nope, we dont have a smoke tester here unfortunately yet. The lean is also at full throttle, so a vacuum leak is unlikly. I did check for a vacuum leak with brake clean. Nothing. Ill try the balance test on the injectors. It better not be them, i had them rebuilt last week.

fcm

Still got the original cat?

If so pull it and install a test pipe and see what happens, cat may be "clogging up". 94

cdrive

Does car have a catalyst or test pipe if you have a converter disconnect it and try.