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Author
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Topic: Runnin like shiat---fixed!
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z pyro
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Member # 3745
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posted
 
 
k I just swapped in the HO headers and H-pipe, and my car is running like total shit. at first I didn't have the O2 sensors hooked up, I just screwed em in cuz my uncle (it was at his shop) said it might catch something on fire if they weren't in there. so I drove it home (well my gfs house), sputtering and backfiring all the way. BTW, I didn't have the mufflers hooked up cuz the muffler shop was closed by the time I finished. when I got home, I spliced wires between the o2 sensors and the connectors, hooked them up, disconnected the batt. cable to clear the computer, and fired it up and drove it around the block. it still ran like shit, so I figured the 02 sensors were messed up driving home. so I bought new ones and installed them, and the car still runs like shit. it bogs down when i try to accelerate, backfires like crazy, and is basically undriveable. what's wrong??
[ July 11, 2004, 03:42 PM: Message edited by: zpyro35 ]
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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mtbaughs
Road Racer
Member # 4052
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posted
Are the new O2 sensor wires spliced in order to reach where they need to connect or is the wire un-touched? You can't extend the wiring on the O2 side, you must extend the wiring on the harness side. Not sure if you did that or not. Splicing in on the O2 side screws up the O2 signal. Lets start with that.
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R.I.P. Charlie Bruno Dec 2001
Posts: 2019 | From: Boise, Idaho | Registered: Jan 2004
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z pyro
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Member # 3745
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posted
well there we go ![[Razz]](tongue.gif) yeah, I ignorantly spliced it between the connector and the sensor. why does this mess it up? can I splice the wires back the way it was (normal length) and splice it from the other side of the connector?
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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mtbaughs
Road Racer
Member # 4052
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posted
Well most the time when I see that someone did this at the shop I just replace the O2's with new ones and instead of extending the other side I buy O2 harness extenders. You can try going back to the stock length but I'm not sure if it will work or not. For some reason when a person splices on the O2 side it messes up the signal. Some kind of a resistance thing or something along those lines. Easiest fix is just buying the O2 enxtenders and that makes it all a plug in rather that extending the other side
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R.I.P. Charlie Bruno Dec 2001
Posts: 2019 | From: Boise, Idaho | Registered: Jan 2004
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z pyro
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Member # 3745
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posted
well I just dropped $80 on 2 new sensors, and I don't want to buy another set or anything else for it that I can do myself. I have no problems splicing and/or soldering wires. I'll just solder the wires on the sensor side and extend the harness side, hopefully it'll work. the sensors shouldn't be messed up if it still ran rich if I only drove it about 100' after putting them in, right? (I hope)
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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mtbaughs
Road Racer
Member # 4052
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posted
You should be alright just clear the computer after your done. My only concern is that after you fix the O2 side whether or not it will return to the correct readings. Anytime you add solder or anything to a wire you change its characteristics hense the problem in the first place. I'd at least give it a shot before you buy another set of 02's.
[ July 10, 2004, 11:49 PM: Message edited by: mtbaughs ]
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R.I.P. Charlie Bruno Dec 2001
Posts: 2019 | From: Boise, Idaho | Registered: Jan 2004
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z pyro
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Member # 3745
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posted
quote:
Originally posted by mtbaughs:
I'd at least give it a shot before you buy another set of 02's.
my thoughts exactly. im crossin my fingers! thanks for the help!! ![[patriot]](graemlins/patriot.gif)
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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white1990stang
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Member # 2307
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posted
did you get the plug wires mixed up? crack a plug?
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You must be fast, cause I was haullin ass when I passed you.
Posts: 1308 | From: martinez | Registered: Jan 2003
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z pyro
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Member # 3745
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posted
possibly mixed up the wires, but I pulled the plugs to see if they were fouled, which they weren't. the cyl. are numbered 1-4 passenger side, 5-8 driver side, right?
[ July 11, 2004, 08:10 AM: Message edited by: zpyro35 ]
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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stoauto
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Member # 2803
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posted
Yes! 1-4 passenger, and 5-8 driver.
Posts: 1054 | Registered: May 2003
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z pyro
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Member # 3745
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posted
k, couldnt remember if it was ford or chevy that had that or the odd on one side even on the other
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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z pyro
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Member # 3745
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posted
well I had used some butt connectors to splice the wires, and I tested for continuity on either side of them...guess what! no continuity! so now I'm in the process of soldering the wires and testing for continuity wherever I can. hopefully it'll work now..
as for the spark plug wires, I reinstalled them and it still ran poorly, so that isnt the problem
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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posted
no continuity... hmmmm
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3954 | From: Thebay | Registered: Jul 2002
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z pyro
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Member # 3745
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posted
IT'S ALIVE!!!
I don't know what the problem was though
Ok, so I redid the wiring on the o2 sensors, fired it up and it still ra like crap. after awhile of cussing at it like a sailor, I started checking the plug wires. I'd disconnect each wire at the cap, and when I did so, the engine would run worse. that is, until I got to #s 7 and 8. I'd pull the plugs off the cap, and there would be no change. I also pulled them off of the plug, same thing, but there was still spark. so I thought maybe it was the plugs. I swapped 7 and 8 with 5 and 6, and did the wire pulling test again. same thing, no change when I pull wires 7 and 8. so I'm thinking it's those two wires. last thing I do before going to the store and buying new wires, I swap 7 and 8 wires with 3 and 4. lo and behold, it runs! and it's a stronger now that it has no mufflers and an h-pipe rather than mufflers, tailpipes, and crimped stock fake duals
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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kenlani
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Member # 4503
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posted
whoa--fellas, I just bought two universal fit sensors for my 86 gt, was just gonna go cut and splice em in,glad I looked at this posting!!!so---what do I do? splice in at the same length point of the wire? attach a connectorto sensor side with same length wire? you guys got me all confused. thanks for any help
Posts: 23 | From: Portola | Registered: May 2004
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z pyro
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Member # 3745
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posted
well I really don't think it was the place where I spliced em, rather the poor splicing and the two cylinders not firing. if you're worried, just get some wire and splice em in on the harness side of the connector. so it'll go sensor, wires, connector, spliced wires, harness.
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'95 Integra LS
'08 Buell XB12R Firebolt
'65 Mustang 289 - soon to be 306
Posts: 1732 | From: Fresno, CA | Registered: Nov 2003
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