need help car will not run

387hardcore · 03-20-2004, 05:28 PM

i just put a new hearder uppipe and down pipe on my car today went to start it and it fire for a seconde and shut off now it will not start up agin it cranks over fine but will not fire i have the o2 sensor unhook from the back cat becues i got a cat elmeintor pipe does any one no why it will not fire up

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N'CTRL · 03-20-2004, 05:36 PM

Is the battery dead?

Also, what eliminator pipe did you get? I'm not sure but that could be where the problem is, but most of them come with a place to screw in the O2 sensor.

387hardcore · 03-20-2004, 05:52 PM

nope batterys good it is a tsa down pipe and cat elmatore it has no were to screw it in to

DAVE98RS · 03-20-2004, 08:29 PM

the car doesn't use the O2 sensor on cold start...battery prob is likely. it should start even w/ the sensor unpluged, you'll just get a CEL. if you don't wanna replace the battery yet, do ya got a volt meter to check it?

MikeWRX-NJ · 03-20-2004, 08:58 PM

could be the battery but did you check.

A) your front o2 sensor is pluged in and actually in the header?
B) if you did the resistor mod you made sure you put it in the propery plug?

munkis · 03-21-2004, 01:25 AM

Did you run out of gas?

The car will still run with the o2 sensor disconnected, and from what I gather this is the rear o2 sensor you left out? That will have no affect. The ECU doesnt look at the rear o2 sensor for anything but monitoring catalytic converter effeciency.

it has to be related to something you did. What did you disconnect? Check all your connections and your intercooler hoses.

Jay

2MANYCARS · 03-21-2004, 02:15 AM

Sounds like the battery is drained. Subaru OEM batteries are not that good, get an Optima.

Zephyr · 03-21-2004, 04:02 AM

Quote:

Originally posted by 2MANYCARS
Sounds like the battery is drained. Subaru OEM batteries are not that good, get an Optima.

Screw Optima. Just got to Pep Boys and get the $60 battery with a 5 year waranty on it. Who cares if it craps out on you after two years it's still good for 3 more according to them. You can just take it back and get a new one provided you have the receipt.

Z

22BKEEPER · 03-21-2004, 10:23 AM

It sounds like one of the metered air (intake) lines got loose or pulled off when you changed your pipes. (turbo hanging on the intake hoses) its somthing simple look it over again. dont worry.

22bkeeper.

387hardcore · 03-21-2004, 10:33 AM

ok just cheched all the wires and did skin a few of the wires on the front o2 sensor but tapped them back up now and it truns over fine plues i got a chager hooked up to the battery so it does not drain the batttery and when i frist tryed starting it it did fire up a sec or two then it shut off

387hardcore · 03-21-2004, 11:46 AM

ok i try that someone else told me that if my o2 senscor got messed up that it could have fryed my ecu how would a check it

Mulder · 03-21-2004, 11:52 AM

A couple of things-
If the car starts, runs and dies it's not likely to be the battery, especially if it was fine before the work was done. Probably either a huge vacuum/intake leak someplace or not getting fuel for some reason.
The battery may have become a factor later on from all the cranking while trying to restart the car.
As for battery choices, everyone will have their own opinion on this. I went with an Optima even though the stock battery was still working, because I was unhappy with the cranking performance in winter and didn't think it would last that long. The CCA rating of the OE battery is low to begin with and will only drop as it ages. The cost of the Optima was not all that much greater than a "premium" 60- or 72- month conventional battery, $109 OTC for a 35 Red-Top at the local Pep Boys + another $5 for a longer starter cable. They can now be had in a terminal configuration that just drops in and uses the existing cables, although only online retailers seem to have those. Price is cheaper though.
It's true you can buy a cheaper battery and if it fails within the warranty period get a new one for either free or a pro-rated cost, but if it fails at an inconvenient time, as they usually do, it still sucks. I didn't want to need another battery for a long time. The Optima is also zero-maintenance, contains no liquid electrolyte, holds up to temperature extremes better, and even the Red-Top will tolerate a limited number of deep discharges without permanent damage.
Anyway, just my opinion, YMMV and all that

Mulder · 03-21-2004, 11:54 AM

To check the ECU the best thing to do would be to find someone with a scanner and see if you can connect to the ECU and get data from it. If you can't that's a strong sign it may be bad. If you can the data should help you find the problem.
Also check all your fuses.

387hardcore · 03-21-2004, 01:51 PM

thanks for the help everyone just tryed puting new battery in didn't help and check fues trying to find some one with a hand held scanner right now

DonA · 03-21-2004, 03:36 PM

First off spray a shot of starting fluid into the intake when cranking. If it fires its a fuel problem if it don't its a spark problem.

Once you figure that out you can start eliminating possibilites one at time rather than stabbing in the dark or replacing a seemingly fine battery.

Can you hear the fuel pump prime when you turn on the ignition?

turboICE · 03-21-2004, 05:37 PM

Quote:

Originally posted by 387hardcore
i just put a new hearder uppipe and down pipe on my car today went to start it and it fire for a seconde and shut off now it will not start up agin it cranks over fine but will not fire i have the o2 sensor unhook from the back cat becues i got a cat elmeintor pipe does any one no why it will not fire up

Pull any CELs codes you have. Diagnosing is much easier if we know what problems the ECU thinks there are.

Also did you raise the engine or remove the turbo to install the up pipe?

Do you have a ram air or cold air intake or using the stock box? (A backwards MAF causes huge problems - make sure the plug on the MAF is facing forward.)

The abscence of the rear O2 will throw a CEL for missing the heater but will not affect the running of the car. I don't know if it will even check for cat efficiency if the ECU can't find the heater load.

387hardcore · 03-22-2004, 10:26 AM

i got it running thanks for all the help it was just a blow fuse but now it to loud i mad it 4 miles from my houes and got pulled over for it got 5 days to fix

Mulder · 03-22-2004, 10:32 AM

Well we can't help you with that one

Good to hear you got it running though.

DonA · 03-22-2004, 10:40 AM

Just curious what circut was the fuse on ? Fuel Pump?

387hardcore · 03-22-2004, 12:09 PM

it was the spf no2 fuse in the fues box under the hood not sure what it for i think it is the fuel pump

RS22b · 03-22-2004, 01:29 PM

you should listen to 22B Keeper.

BIllyqua
rally driven...................

03-20-2004, 05:28 PM	#1
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	need help car will not run i just put a new hearder uppipe and down pipe on my car today went to start it and it fire for a seconde and shut off now it will not start up agin it cranks over fine but will not fire i have the o2 sensor unhook from the back cat becues i got a cat elmeintor pipe does any one no why it will not fire up * Registered users of the site do not see these ads.

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03-20-2004, 05:36 PM	#2
N'CTRL Scooby Specialist Member#: 29871 Join Date: Nov 2002 Chapter/Region: Tri-State Location: Long Island Vehicle: 2OO2 ~WRX~ Macadamia Metallic	Is the battery dead? Also, what eliminator pipe did you get? I'm not sure but that could be where the problem is, but most of them come with a place to screw in the O2 sensor.

03-20-2004, 05:52 PM	#3
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	nope batterys good it is a tsa down pipe and cat elmatore it has no were to screw it in to

03-20-2004, 08:29 PM	#4
DAVE98RS Scooby Newbie Member#: 525 Join Date: Nov 1999 Chapter/Region: Tri-State Location: I drive a Crown Vic Vehicle: <<98 2.5RS(RIP)>> 02, Cobb stg 2.5, FMIC	the car doesn't use the O2 sensor on cold start...battery prob is likely. it should start even w/ the sensor unpluged, you'll just get a CEL. if you don't wanna replace the battery yet, do ya got a volt meter to check it?

03-20-2004, 08:58 PM	#5
MikeWRX-NJ Scooby Specialist Member#: 33410 Join Date: Feb 2003 Chapter/Region: Tri-State Location: wishing i was somewhere else Vehicle: 08 wrx dgm	could be the battery but did you check. A) your front o2 sensor is pluged in and actually in the header? B) if you did the resistor mod you made sure you put it in the propery plug?

03-21-2004, 01:25 AM	#6
munkis Scooby Guru Member#: 1847 Join Date: Jul 2000 Chapter/Region: Tri-State Location: brokenmotorsports.com Vehicle: Team Broken: V6 GF rallyarmor.com	Did you run out of gas? The car will still run with the o2 sensor disconnected, and from what I gather this is the rear o2 sensor you left out? That will have no affect. The ECU doesnt look at the rear o2 sensor for anything but monitoring catalytic converter effeciency. it has to be related to something you did. What did you disconnect? Check all your connections and your intercooler hoses. Jay

03-21-2004, 02:15 AM	#7
2MANYCARS Scooby Specialist Member#: 24046 Join Date: Sep 2002 Chapter/Region: Tri-State Location: Hong Kong & US Vehicle: 2007 STi, EVO, M6 E55, ML63, & Old 02 WRX.	Sounds like the battery is drained. Subaru OEM batteries are not that good, get an Optima.

03-21-2004, 10:23 AM	#9
22BKEEPER Scooby Newbie Member#: 15687 Join Date: Feb 2002 Chapter/Region: Tri-State Location: SOA engineering facility Vehicle: 08 Tribeca Bbronz	It sounds like one of the metered air (intake) lines got loose or pulled off when you changed your pipes. (turbo hanging on the intake hoses) its somthing simple look it over again. dont worry. 22bkeeper.

03-21-2004, 10:33 AM	#10
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	ok just cheched all the wires and did skin a few of the wires on the front o2 sensor but tapped them back up now and it truns over fine plues i got a chager hooked up to the battery so it does not drain the batttery and when i frist tryed starting it it did fire up a sec or two then it shut off

03-21-2004, 11:46 AM	#11
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	ok i try that someone else told me that if my o2 senscor got messed up that it could have fryed my ecu how would a check it

03-21-2004, 11:52 AM	#12
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	A couple of things- If the car starts, runs and dies it's not likely to be the battery, especially if it was fine before the work was done. Probably either a huge vacuum/intake leak someplace or not getting fuel for some reason. The battery may have become a factor later on from all the cranking while trying to restart the car. As for battery choices, everyone will have their own opinion on this. I went with an Optima even though the stock battery was still working, because I was unhappy with the cranking performance in winter and didn't think it would last that long. The CCA rating of the OE battery is low to begin with and will only drop as it ages. The cost of the Optima was not all that much greater than a "premium" 60- or 72- month conventional battery, $109 OTC for a 35 Red-Top at the local Pep Boys + another $5 for a longer starter cable. They can now be had in a terminal configuration that just drops in and uses the existing cables, although only online retailers seem to have those. Price is cheaper though. It's true you can buy a cheaper battery and if it fails within the warranty period get a new one for either free or a pro-rated cost, but if it fails at an inconvenient time, as they usually do, it still sucks. I didn't want to need another battery for a long time. The Optima is also zero-maintenance, contains no liquid electrolyte, holds up to temperature extremes better, and even the Red-Top will tolerate a limited number of deep discharges without permanent damage. Anyway, just my opinion, YMMV and all that

03-21-2004, 11:54 AM	#13
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	To check the ECU the best thing to do would be to find someone with a scanner and see if you can connect to the ECU and get data from it. If you can't that's a strong sign it may be bad. If you can the data should help you find the problem. Also check all your fuses.

03-21-2004, 01:51 PM	#14
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	thanks for the help everyone just tryed puting new battery in didn't help and check fues trying to find some one with a hand held scanner right now

03-21-2004, 03:36 PM	#15
DonA Scooby Specialist Member#: 355 Join Date: Oct 1999 Chapter/Region: Tri-State Location: Jersey Shore Vehicle: 08' VW Touareg II Alaska Grey	First off spray a shot of starting fluid into the intake when cranking. If it fires its a fuel problem if it don't its a spark problem. Once you figure that out you can start eliminating possibilites one at time rather than stabbing in the dark or replacing a seemingly fine battery. Can you hear the fuel pump prime when you turn on the ignition?

03-22-2004, 10:26 AM	#17
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	i got it running thanks for all the help it was just a blow fuse but now it to loud i mad it 4 miles from my houes and got pulled over for it got 5 days to fix

03-22-2004, 10:32 AM	#18
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	Well we can't help you with that one Good to hear you got it running though.

03-22-2004, 10:40 AM	#19
DonA Scooby Specialist Member#: 355 Join Date: Oct 1999 Chapter/Region: Tri-State Location: Jersey Shore Vehicle: 08' VW Touareg II Alaska Grey	Just curious what circut was the fuse on ? Fuel Pump?

03-22-2004, 12:09 PM	#20
387hardcore Scooby Specialist Member#: 41902 Join Date: Aug 2003 Location: punxsutawney PA Vehicle: 2003 wrx&97 legacygt yellow	it was the spf no2 fuse in the fues box under the hood not sure what it for i think it is the fuel pump

03-22-2004, 01:29 PM	#21
RS22b Scooby Guru Member#: 5413 Join Date: Apr 2001 Chapter/Region: Tri-State Location: The stages Vehicle: #15 2-Subaru Rally Cars !!! Fiesta!	you should listen to 22B Keeper. BIllyqua rally driven...................