#2738122 - 06/17/08 12:19 PM
JRSC problems - pulling my hair out!!!!!!
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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Ok I have 2000 Civic SiR with JRSC 6psi wit JR map controller, MSD Boost timing retard, AEM wideband O2 with gauge, under hood fuel pressure gauge,and B&M rail fuel pressure reg/adjuster and Walbrow 195 fuel pump.
Please do not just tell me to use engine management due to having 2 people waiting to buy this car as is, as long as it works.
Symptom: When I hit boost it leans right out and I have loose of power. (I let off immediately)
What I have done:
- swapped out the fuel pump for the stock one (no change, had to adjust the fuel pressure on the rail to be right)
- Replaced the JR FMU (no fix and waited a *&%$in' month for the part)
- Checked all Map Controller connections (solid, including ground wire)
- Fuel pressure measured: 37psi with rail regulator vac tube on and 44psi with rail reg tube off.
- Fuel pressure measured at JR FMU: 37psi with the vac tube on and 40psi with tube off.
- When I pinch the fuel return line just after the rail fuel regulator the pressure rises alot depending on how much I pinch
Could this be a faulty Map Controller? ANY suggestions would be greatly appreciated!
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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#2740727 - 06/18/08 06:23 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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I unwired the Map Controller and wired up the enrichment relay that came with the SC kit originally and the car does the same thing.
Anyone??
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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#2741433 - 06/18/08 11:00 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: SiAdam]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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So you are saying instead of replacing one $100 bandaid I should throw $1200.00 worth of engine management at it, hope my problem isn't with any other part of my fuel system just to maybe find out that I still have the problem and then have to spend more money to fix the original problem? I have driven this car with the SC and bandaids for over 100,000km with no problems other then the belt.
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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Top
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#2741441 - 06/18/08 11:02 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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... sorry for being rude, I am just frustrated.
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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Top
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#2744863 - 06/19/08 10:31 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: SiAdam]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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I have been told that the 195lph fuel pump for 6psi is plenty and that the original fuel pump is also sifficiant. The 195lph has been working good and providing enough fuel for 100,000km. I don't have access to a 255lph pump but I did swap out the 195lph for the stock pump with the same effect... I do know this isn't conclusive due to the stock pump flowing less.
It has a brand new RRFPR and did not fix the problem.
I will see if I can find someone to "lend" me their fuel pump for a test.
Thanks for the replies.
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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Top
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#2745029 - 06/19/08 10:55 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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SamuraiSam
Post Master Sr
Registered: 07/29/02
Posts: 8828
Loc: Bellingham, WA
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If you already know all this shit, why come on a forum and ask for help?
I'd repeat that test with a known good pump.
How's your fuel filter.
What the fuck is a Map Controller.
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#2745071 - 06/19/08 11:01 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: SamuraiSam]
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jcoosi
Sr Member
Registered: 07/29/05
Posts: 1109
Loc: TN
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#2745976 - 06/19/08 01:51 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: jcoosi]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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I'm asking for help because it is still not working.
Fuel filter is about 1 year old... maybe I should just replace it anyway.
My last option is to remove the SC and all the crap with it and sell them seperate. FUck
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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|
Top
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#2745993 - 06/19/08 01:54 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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Thanks SiAdam,
How would I check the regulator? Is this the check PSI with vac tube on and then check PSI with vac tube off or is this checking something else?
I think I will replace my fuel filter anyway... 1 year old.
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
|
|
Top
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#2746044 - 06/19/08 02:09 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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With the engine running, I pinch the return line comming from the fuel pressure regulator on the fuel rail, the pressure rises and will hold steady as long as I am pinching steady. Does this indicate that the fuel filter is ok.. or is this not even a test to see if the filter is flowing?
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
|
|
Top
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#2746497 - 06/19/08 04:06 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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I replaced the fuel filter with a brand new one, no change. I have the stock exhaust and if the car ever pinged (detination)for any reason I could hear it and adjust my timing... the funny thing is that when I test it and get on the gas, the wideband goes completely lean but the car doesn't detinate. There is a lose of power but not crazy.
Could an upstream exhaust leak cause this?
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
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Top
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#2750416 - 06/20/08 05:57 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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SiR Steel
Post Master Sr
Registered: 06/18/01
Posts: 8384
Loc: West Vancouver, BC, Canada
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I'm using a stock fuel pump right now with zero problems and I've had the charger for at least 4 years. I do have RC440 injectors, though. Are you running with stock injectors?
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2018 BMW M2 6MT
1977 British Leyland MINI Modded 1380cc LHD
2005 Piaggio Vespa ET2 Modded 70cc
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#2750645 - 06/20/08 07:07 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: SiR Steel]
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SamuraiSam
Post Master Sr
Registered: 07/29/02
Posts: 8828
Loc: Bellingham, WA
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You very well might have an issue with the MAP sensor itself, or with the "MAP controller" aka giant piece of shit that fucks up the signal the ECU receives.
I would try switching both of those things out one at a time with known good replacements.
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#2753256 - 06/22/08 09:46 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: SamuraiSam]
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Jehu
Newbie
Registered: 02/15/05
Posts: 54
Loc: NS, Canada
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thanks
Well when I remove the SC belt the car is doing the same thing, as I get higher (like past 2000rpm) it leans right out and the car doesn't feel strong.
Plug wires maybe?
_________________________
2000 SiR w/CAI intake and short shifter
JRSC @ 6psi
MSD Boost Retard Master
AEM Wideband
Engine mount inserts
1step colder plugs
|
|
Top
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#2753638 - 06/22/08 03:17 PM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: Jehu]
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jcoosi
Sr Member
Registered: 07/29/05
Posts: 1109
Loc: TN
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Sounds like a fueling issue or a map sensor or possibly an 02 sensor sending the wrong signal to the ecu
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#9185068 - 11/13/17 05:15 AM
Re: JRSC problems - pulling my hair out!!!!!!
[Re: ]
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wor
Newbie
Registered: 11/13/17
Posts: 37
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