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#1 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
Posts: 1,301
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Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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i was wondering if someone can help me out here. my civic is not starting and i have had some people tell me that it sounds like the main relay. i was wondering if someone could please inform me what exactly the relay does. if it is bad the car will not start right?
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#2 |
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Super Moderator
Join Date: Sep 2002
Location: Wallingford, CT
Age: 32
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Ride: 91 CRX
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A realy is a switch in a way. There is a low voltage coil that is connected in series with a switch(your ignition switch in this case) when the switch is closed it energizes the coil and the coil acts like magnet which closes a second set of contacts (that act like a switch) that can handle a much high load and current.
On a relay a few things can fail, the coil can fry and cause a short and the cooil does work anymore which won't let the secondard contacts function, The second set of contacts can tack weld together and and cease to function. there could also be a cold solder joint and an intermittent connection to the coil is observed. How Stuff works (About Relays) And to confirm your thoughts if hte main relay fails the car won't start. Turn your radio off, put the key in the ignition, turn it to the on position, if you listen carefully you can hear the feul pump prime the fuel rail, if you don't hear this noise most likely the main relay has failed. __________________
Dennis Buy my stuff plz... Mondaswap For Sale - MPFI, 88-91 CRX, 92-95 Civic Parts Please don't PM/Email/IM me for technical support. Make a Post!!! 91 CRX DX, 03 Civic EX "There are 10 kinds of people in the world: those who get binary and those who don't." "Of all my imaginary friends I don't think there was one I didn't end up having to kill" |
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#3 |
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Senior Member
Join Date: Aug 2004
Location: Western New York
Age: 26
Posts: 542
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Ride: 2003 Honda Civic Si
Rep Power: 16
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EDIT: Ahh you beat me too it!
Yes if your main relay is bad you car will not start.. but usually they start to go bad.. as in your car stall randomly (actually when the main relay heats up the solder connection are broken) when that happens the fuel pump looses power.. to tell if yours is bad put the key in your car and turn it to run... I don't remember what it is called 2nd click so everything powers up.. you should here the fuel pump whirr for a moment.. if not = bad main relay.. or bad fuel pump or shorted wire.. you should really start by checking if you have the 3 essentials, fuel spark and air.. __________________
1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#4 |
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Senior Member
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Location: Poconos pa
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well to top that i will tell you what i did i took the fuel line off the rail and i turned the key and fuel was spilling out.
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#5 |
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Senior Member
Join Date: Dec 2004
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yeah you said it starts to go bad well the car one day started acting like it was running on three cylinders and then it went back to normal. then it started acting like it was running out of gas. once the car got home it died it didn't want to start now it seems like it is only running on two cylinders when i spray starter fluid in the IM but it turns on the 2 and the 3 spark plugs come out with the fluid on it and the 1 and 4 don't what could that be?
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#6 |
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Senior Member
Join Date: Aug 2004
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dizzy.. gotta spare cap?
Edit: second thought it runs fine with the starter fluid being ssprayed in? __________________
1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#7 |
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Senior Member
Join Date: Dec 2004
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Ride: RX5.7 Civic LS and Teg Ls
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well it runs but doesn't run fine i have tried two different dizzys with two different cap and rotors
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#8 |
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Senior Member
Join Date: Aug 2004
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plugs and wires?
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1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#9 |
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Senior Member
Join Date: Dec 2004
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Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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brand new two different sets
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#10 |
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Senior Member
Join Date: Aug 2004
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clogged fuel injectors maybe.. also has the ignition timing changed at all that you know of?
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1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#11 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
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Ride: RX5.7 Civic LS and Teg Ls
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well before i took off the old dizzy i put a mark on it and on the place where it bolts on to and i put the new dizzy right on that mark so the dizzy timing should be fine but i can't check it with out the engine being on. i took the injectors out one day matter of fact the next day after it died on me and placed them on the head and turned the key and all four of them are spraying
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#12 |
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Senior Member
Join Date: Aug 2004
Location: Western New York
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Ride: 2003 Honda Civic Si
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when does it run like poo?
yes.. poo __________________
1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#13 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
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Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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no it runs like ish
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#14 |
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Senior Member
Join Date: Aug 2004
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does it turn over? if so, does it almost start or sputter?
if it doesn't might be a short somewhere else.. ignition switch maybe __________________
1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#15 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
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Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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when i turn the key it sputters and runs for a half second but when it has starter fluid it runs but not great what and where can i have a short at?
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Check Out My Car Club www.HighRevCustoms.com and join the forums this is what happens when you are bored out your mind!!:| [[-]] (()) ||\|| ||)) //-\\ (( || \\// || (( my current baby http://i114.photobucket.com/albums/n.../myspacefc.jpg |
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#16 |
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Senior Member
Join Date: Aug 2004
Location: Western New York
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Ride: 2003 Honda Civic Si
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well if it sputters and run for a bit and with starter fluid it runs but not great - it is probably fuel related.. bad gas? last fuel filter change?
easy to change too. the short was if it didn't turn overand just clicked __________________
1988 Honda CRX DX (Sold) 1993 Honda Civic EX (Sold) 1993 Nissan Sentra XE (Sold) 1996 Saab 900SE Turbo (For Sale) 2003 Honda Civic Si (For Sale) 2005 Honda Civic EX Special Edition (Sold) 2007 Mazdaspeed 3 |
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#17 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
Posts: 1,301
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Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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when the swap went it i put a new fuel filter in as well also the gas has to be good because i just filled it up well half way up with fresh 93
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Check Out My Car Club www.HighRevCustoms.com and join the forums this is what happens when you are bored out your mind!!:| [[-]] (()) ||\|| ||)) //-\\ (( || \\// || (( my current baby http://i114.photobucket.com/albums/n.../myspacefc.jpg |
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#18 |
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Senior Member
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im thinking the place you got gas from sucks and you have water in your ish. drain it off purge the whole system. Refill with reliable gas and make sure all injectors are spraying.
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*New Ride* 1998 Black DX Hatch build it....break it....build it....break it...it's a vicious cycle SOLD: 1988 Honda CR-X Hf Performance: 1998 D16Y8, 1988 Si Tranny, D16a6 injectors,PM6, 88 accord clutch disc, 91 and up Flywheel and Pressure Plate, Comp Cams 260 Street and Strip CAM, RPM Switch for VTEC(saving up for Hondata ECU) DC Sports 4-1 header, 2.25 Exhaust, High flow Cat, Cold Air intake, b18c5 throttle body Floss: JDM Power Window Conversion, Arm rest, EDM door pockets, 91 si gauges, 91 Si taillights, full Si interior swap,and 96 gsr wheels w/kumho ecsta 711's, and projectors. Suspension: Koni Sports, Eibach Pro's, Rear Sway Brakes: 1" Master cylinder, ITR calipers and brackets, 90-91 ex knuckles, redrilled Prelude VTEC rotors up front and 98gsr disc in the rear Future mods include: WW RS KIT, S2000 Suzuka blue metallic paint, Power folding mirrors, obd1 hondata, BOOST!!! |
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#19 |
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Senior Member
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have you tried replacing the main relay yet?> i dont remember from the old post..if not they are easily fixable.....just open them up and resolder the joints and there good for another 100,000. Main relay located on drivers side kickpanel under dash
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*New Ride* 1998 Black DX Hatch build it....break it....build it....break it...it's a vicious cycle SOLD: 1988 Honda CR-X Hf Performance: 1998 D16Y8, 1988 Si Tranny, D16a6 injectors,PM6, 88 accord clutch disc, 91 and up Flywheel and Pressure Plate, Comp Cams 260 Street and Strip CAM, RPM Switch for VTEC(saving up for Hondata ECU) DC Sports 4-1 header, 2.25 Exhaust, High flow Cat, Cold Air intake, b18c5 throttle body Floss: JDM Power Window Conversion, Arm rest, EDM door pockets, 91 si gauges, 91 Si taillights, full Si interior swap,and 96 gsr wheels w/kumho ecsta 711's, and projectors. Suspension: Koni Sports, Eibach Pro's, Rear Sway Brakes: 1" Master cylinder, ITR calipers and brackets, 90-91 ex knuckles, redrilled Prelude VTEC rotors up front and 98gsr disc in the rear Future mods include: WW RS KIT, S2000 Suzuka blue metallic paint, Power folding mirrors, obd1 hondata, BOOST!!! |
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#20 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
Posts: 1,301
iTrader: 0 / 0%
Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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well the place where i get my gas from is the same place i get my prelude from and it is running just fine so i don't think it is bad gas, my dad gets gas there for his q45 and for his 4runner so the place is good in my eyes. what else could i look at i am going to change out the injectors and see what happens with that!
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Check Out My Car Club www.HighRevCustoms.com and join the forums this is what happens when you are bored out your mind!!:| [[-]] (()) ||\|| ||)) //-\\ (( || \\// || (( my current baby http://i114.photobucket.com/albums/n.../myspacefc.jpg |
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#21 |
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Senior Member
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__________________
*New Ride* 1998 Black DX Hatch build it....break it....build it....break it...it's a vicious cycle SOLD: 1988 Honda CR-X Hf Performance: 1998 D16Y8, 1988 Si Tranny, D16a6 injectors,PM6, 88 accord clutch disc, 91 and up Flywheel and Pressure Plate, Comp Cams 260 Street and Strip CAM, RPM Switch for VTEC(saving up for Hondata ECU) DC Sports 4-1 header, 2.25 Exhaust, High flow Cat, Cold Air intake, b18c5 throttle body Floss: JDM Power Window Conversion, Arm rest, EDM door pockets, 91 si gauges, 91 Si taillights, full Si interior swap,and 96 gsr wheels w/kumho ecsta 711's, and projectors. Suspension: Koni Sports, Eibach Pro's, Rear Sway Brakes: 1" Master cylinder, ITR calipers and brackets, 90-91 ex knuckles, redrilled Prelude VTEC rotors up front and 98gsr disc in the rear Future mods include: WW RS KIT, S2000 Suzuka blue metallic paint, Power folding mirrors, obd1 hondata, BOOST!!! |
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#22 |
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Senior Member
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i just repaired a main relay out of a 88hf that was doing the same thing your car did....works great now....those dry joints are really hard to see on the board, but you can find them if you know what you are looking for. i didnt do all that desoldering and conformal coating crap and its working fine ...alll i did was resolder the dry joints
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*New Ride* 1998 Black DX Hatch build it....break it....build it....break it...it's a vicious cycle SOLD: 1988 Honda CR-X Hf Performance: 1998 D16Y8, 1988 Si Tranny, D16a6 injectors,PM6, 88 accord clutch disc, 91 and up Flywheel and Pressure Plate, Comp Cams 260 Street and Strip CAM, RPM Switch for VTEC(saving up for Hondata ECU) DC Sports 4-1 header, 2.25 Exhaust, High flow Cat, Cold Air intake, b18c5 throttle body Floss: JDM Power Window Conversion, Arm rest, EDM door pockets, 91 si gauges, 91 Si taillights, full Si interior swap,and 96 gsr wheels w/kumho ecsta 711's, and projectors. Suspension: Koni Sports, Eibach Pro's, Rear Sway Brakes: 1" Master cylinder, ITR calipers and brackets, 90-91 ex knuckles, redrilled Prelude VTEC rotors up front and 98gsr disc in the rear Future mods include: WW RS KIT, S2000 Suzuka blue metallic paint, Power folding mirrors, obd1 hondata, BOOST!!! |
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#23 |
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Senior Member
Join Date: Dec 2004
Location: Poconos pa
Posts: 1,301
iTrader: 0 / 0%
Ride: RX5.7 Civic LS and Teg Ls
Rep Power: 25
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lol the only thing i can soder is the solder is nothing i suck at it i would just get another one from a junk yard and try my luck with one of those before i mess with the one and only one in my car. thanks tho that is the only thing i have not tried yet is the relay lets see what happens with that
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Check Out My Car Club www.HighRevCustoms.com and join the forums this is what happens when you are bored out your mind!!:| [[-]] (()) ||\|| ||)) //-\\ (( || \\// || (( my current baby http://i114.photobucket.com/albums/n.../myspacefc.jpg |
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#24 |
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Senior Member
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not a prob...let us know how it works out...try to get one from a car with as few miles as possible
__________________
*New Ride* 1998 Black DX Hatch build it....break it....build it....break it...it's a vicious cycle SOLD: 1988 Honda CR-X Hf Performance: 1998 D16Y8, 1988 Si Tranny, D16a6 injectors,PM6, 88 accord clutch disc, 91 and up Flywheel and Pressure Plate, Comp Cams 260 Street and Strip CAM, RPM Switch for VTEC(saving up for Hondata ECU) DC Sports 4-1 header, 2.25 Exhaust, High flow Cat, Cold Air intake, b18c5 throttle body Floss: JDM Power Window Conversion, Arm rest, EDM door pockets, 91 si gauges, 91 Si taillights, full Si interior swap,and 96 gsr wheels w/kumho ecsta 711's, and projectors. Suspension: Koni Sports, Eibach Pro's, Rear Sway Brakes: 1" Master cylinder, ITR calipers and brackets, 90-91 ex knuckles, redrilled Prelude VTEC rotors up front and 98gsr disc in the rear Future mods include: WW RS KIT, S2000 Suzuka blue metallic paint, Power folding mirrors, obd1 hondata, BOOST!!! |
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#25 |
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learning in progress
Join Date: Feb 2003
Age: 27
Posts: 5,742
iTrader: 4 / 100%
Ride: 00' Montero sport, 99' lsv civic
Rep Power: 93
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have you checked the map sensor???
when i first installed my first lsv in my teg it would turn over and sometimes start but it would run like shit.....i would hit the gas and turn off.....it wouldnt turn on.......so try that...it might help....but if you say your fuel comes on then it might not be the relay.....did you check the FPR? __________________
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