Partial Throttle Massive Leaning and Bogging, HELP

[CROM]

I would first off like to say that what has happened today should be dealt with as Pearl Harbor was. This is a horrible tragedy and those involved must pay. Please pray for those survivors and the missing, as well as their families...

Now to my problem,

I installed some BKRE-711(the 1 step colder NGK's) plugs the other day and the car ran awesome for about 36 hours, then I noticed the car was bogging really bad and running very lean at partial throttle and low onset of boost. When I push the throttle 1/2-3/4 the way the car goes lean for about 2-3 seconds and boggs really badly. It is when boost is coming on and I dont have the throttle floored(sometimes it even does it when I floor it) I pulled the plugs and the #1 and 4 plugs were ghost white(LEAN!!!)

This is not the first time that I have put something on the car(that was minor) and had something totally uninvolved cause the car to crap out.

So, I am figuring either the fuel pump or the JR FMU is crapping out. I called the wonderful Sean and he sent one right out(Thanks again Sean). I will replace the FMU and hopefully the problem will go away.

If not, then either the fuel pump or the JR relay is at fault.

Does anyone have any suggestions or input on this very irritating problem I have encountered?

My cars backround-50k miles, 25-30k with blower installed. Never replaced the FMU, had stock plugs and plug wires. the rest of the mods are in my sig.

Thank you and I hope everyone has a wonderful week!

P.S. My parents knew a man who was on the flight that hit the Pentagon. He was a classmate of my dads at the Naval Academy.

------------------
JRSC@6PSI, AEM Intake, Greddy Exhaust, DC 4-2-1 Header, JR BTC, Cartech 20005, B&M Edge shifter, A/F-Boost Gauges, H&R OE Sport Springs, KYB AGX Adustable Struts

[This message has been edited by CROM (edited September 11, 2001).]

[HyBridEX]

Clogged fuel filter or clogged JR FMU?

------------------
95 Hybrid w/SC'd JDM B16

[Holden]

Check the vacuum lines feeding the FPRs for blockage.

Every JR FPR that broke that I've heard of stuck at a high fuel pressure. Go figure.

Good luck.

------------------
Greg Holden
96 GSR, JSRC @10psi, All the Goodies!
Best 1/4 ==> 13.556 @ 105.29mph
My JRSC Install Site

[Hondata]

This sounds like the typical boost when in closed loop problem documented here : http://Hondata.com/jrscproblems.html


The ecu is in fact leaning the mixture to 14.7:1 when in boost under about 25% throttle - which is not what a boosted motor needs.

Doug

------------------
http"//www.hondata.com

[This message has been edited by Hondata (edited September 13, 2001).]

[Hondata]

This sounds like the typical boost when in on closed loop problem documented here : http://Hondata.com/jrscproblems.html

Doug

------------------
http://www.hondata.com

[CROM]

But why would this problem rise now? I have had the supercharger on my car for 30+ Thousand miles without a glitch???

------------------
JRSC@6PSI, AEM Intake, Greddy Exhaust, DC 4-2-1 Header, JR BTC, Cartech 20005, B&M Edge shifter, A/F-Boost Gauges, H&R OE Sport Springs, KYB AGX Adustable Struts

[Hondata]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by CROM:
But why would this problem rise now? I have had the supercharger on my car for 30+ Thousand miles without a glitch???

<HR></BLOCKQUOTE>

That I cannot answer, but several people have reported the same problems suddenly starting. Could be something to do with changes in voltages from the stock o2 sensor over time. The problem exists though. We have decoded the programming in the ECU dealing with this.

Doug

------------------
http://www.hondata.com