Exhaust ground wire? [Merged 3-7] strap copper braid

[LwlrMk]

Ok, I just installed my new S20G with a Full exhaust. A/F guage worked before the install but once I did the install the A/F guage doesn't work. The ground wires going to the exhaust were not reconnected and lost. Could this cause the reason that it's not working, the guage lights up but just sits in the last light in the lean. (it's what I think is the problem)

Also, anyone install a new TFAL in place of the main fan? I did and only used the ground and white wire (the thermostat switch wire) and capped off the other 2. Poped code po225

 

[Mike1992]

Just make a grounding strap from 4g audio wire and match one end on the downpipe and one end to the body, do this on some bolts on the exhaust closer to where the rear motor mount is at. That should make the gauge start working again

 

[LwlrMk]

thnx, i'll try that

 

[LwlrMk]

Oh the code was wrong, it's P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control

 

[broox]

I've got my 3" RnR on and it's touching under the rear wheels. Here is a picture: http://derek.broox.com/?page=pictures&dir=pictures/cars/dsm/exhaust&file=exhaust-rub.jpg

How long can I drive like this? And what should be done to fix it?? Also, how important is the ground that hooks to the catalytic converter?

 

[crankbender]

I've got my 3" RnR on and it's touching under the rear wheels. Here is a picture: http://derek.broox.com/?page=pictures&dir=pictures/cars/dsm/exhaust&file=exhaust-rub.jpg

How long can I drive like this? And what should be done to fix it?? Also, how important is the ground that hooks to the catalytic converter?

How long you can drive like that is really dependent on how hard it is rubbing.

To fix this you can try simply adjusting the rubber mounts under the car....there might just be one bound up some. Also see if you can move any over to the other side of the exhaust.

The ground strap is very important. Without this strap it is likely that your O2 sensor will read wrong and cause your car to run rich.

 

[Mike1992]

I'd take your car to the local exhaust shop and have them slightly bend it a very tiny amount. The exhaust ground is somehwat important, ive heard yey and ney on effects it has with the o2 sensor. hook it up

 

[crankbender]

I'd take your car to the local exhaust shop and have them slightly bend it a very tiny amount. The exhaust ground is somehwat important, ive heard yey and ney on effects it has with the o2 sensor. hook it up

Don't have them bend it. Just bend the posts used to mount it so that it sits over some.

The O2 sensor works on a voltage creation between the sensor body and the wire to the ECU. If the sensor body is not properly grounded, through the strap, it is possible it will not be at the same potential as the ECU and therefore make it not operate correctly. Remember we are talking tenths and hundreths of a volt....not hard to get something that isn't grounded up that little bit in potential from the static produced through the flowing exhaust.

 

[MR2-GTS]

Guys I need some help I recently replaced my downpipe and cat and forgot to reattach the ground. So I need to know how many ground are there for the exhaust, I only remeber there was one for the cat. If I missed anything please let me know thanks.

 

[x camaro owner]

91 eclipse's have one ground i believe it was to the downpipe, not having this ground can cause radio reception to become poor depending on the car.

 

[Royalty]

i have a 3" turbo back so i needed to reground my exhaust. I was being a lil lazy when i thought this up but i can only assume that it would work.

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[AWDTSiTalon]

I can't tell what you have going on by the picture. I assume that is a piece of metal wraped around the hanger so it should work fine. Rust might be a factor down the road.

 

[Sic95gst]

"ground"??? I didn't know your exhaust ran off a electric current. You need to get a new exhaust hanger because that weak terminal end isn't gonna lst long at all. Go to the junkyard or to the dealer.

 

[hewhoisknot]

go to an exhaust shop... they did one for me for 5 bucks... hanger and welding

 

[Royalty]

nono the hangers are fine. this is just the ground wire.

 

[Defiant]

Anything holding that ring terminal in contact with the hangar? I'd be concerned it might not be getting very substantial contact. The small amount of current running through it will tend to make that problem worse.

The exhaust is grounded for the rear O2 sensor, and -oddly enough- radio noise suppression (I don't get that part either, so let's not).

 

[Syndicate13]

Anything holding that ring terminal in contact with the hangar? I'd be concerned it might not be getting very substantial contact. The small amount of current running through it will tend to make that problem worse.

The exhaust is grounded for the rear O2 sensor, and -oddly enough- radio noise suppression (I don't get that part either, so let's not).

Yeah, we wouldn't want our 3 inch catless exhaust disturbing our music.

 

[Royalty]

Anything holding that ring terminal in contact with the hangar? I'd be concerned it might not be getting very substantial contact. The small amount of current running through it will tend to make that problem worse.

I'll get some pliers and pinch it tighter, add a drop of jb wled to secure the deal

Yeah, we wouldn't want our 3 inch catless exhaust disturbing our music.

exactly.

 

[rowlex]

Hey guys, I have the large core Streetimports intercooler 24x12x3 I am looking into installing it..today I centered it infront of my car and looked at the lower mount points. It seems that they are in the wrong spots. The radiator braces or something on the front underside piece of my car "bump" downward to house the bolts? there are two of them, about 2" long and 1/2 inch down. RIGHT in the spots where my intercooler's welded-on mounts are. Anyone with this core run into this problem? Any suggestions on how to fix it?

Second question, It seems my exhaust ground strap has been ripped in half and is no longer grounding my exhaust. Are there any serious or negative effects from this until I can get it fixed?

Thanks everyone!

 

[dave99gst]

i duno about the core ive never seen or installed one.
as for the ground strap
its not MAJOR to not have it but it sure dont hurt. Its to ground the rear o2 sensor.

 

[Ferhat007]

the samething just happened to me..i left the wire unhooked and it did not give me any codes or anything but the car was idling little funny...when i got on it the brake light and battery light came on..it went away in a little bit.....i dunno if it cuse of that ground wire

 

[95 'clipse RS]

hello, i searched the site and couldnt find anything on this, so here is my question.

the car that this is on is my 92 GS

i bought an obx header and downpipe, and when i took the old downpipe off i noticed a braided copper strap, like a ground. it was connected to the dowmpipe and to the chassis of the car, and there is no spot on the new downpipe for this, and what i am wondering is of this is and important ground spot, for the oxygen sensor or somethin, or if i should just leave it off? so if anyone could help me out here that would be great.

thanks in advance guys

 

[eboy0]

Some people who get bad mileage blame this as being the culprit. Its supposed to be an O2 sensor ground.

 

[scottsee]

"Sometimes" you can get a rear-o2 heater malfunction because of a missing/loose o2 ground stap. I wouldn't worry about it.. You could get a 3.5in t-clamp and stick it on the downpipe if you must..

 

[95 'clipse RS]

ok thats probably what ill do. because it not really the mileage im worried about. its when the car warms up and im driving at a constant speed usally in third or fourth, that the engine sputters and since its a manual it jerks pretty roughly. thats when the accelerator is like at the exact point to where it would keep the car going at the same exact speed that it does this type of thing. could this be why it is doing this?

also i have a bad ISC motor, with three bad coils on it. could that be related in this in any way?

thanks