despretly need a scan

[boostedguy05]

i installed headders last weekend. now car is running like shit. rpms are bouncing all over the place. it has new front o2 new plug wires fairly new rear o2. so i need help

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[AlmightyBirdman]

You throwing a CEL?

 

[G_T_O]

Do you have hp tuners?

 

[boostedguy05]

i am throwing codes for rear 02. i do not have a tuner

 

[Dasfinc]

i am throwing codes for rear 02. i do not have a tuner

Sooo... you removed the O2 sensors from the stockers... installed the new headers.... reinstalled the O2 sensors, and now get an O2 code... and your car isn't running correctly...... and yet you need someone to scan your car....? Seriously?

I'm not even a GP guy, but if I had to guess you have a problem with the rear O2 sensor.... Inspect the wiring, or replace it... doesn't seem like rocket science.

 

[blakbearddelite]

Sooo... you removed the O2 sensors from the stockers... installed the new headers.... reinstalled the O2 sensors, and now get an O2 code... and your car isn't running correctly...... and yet you need someone to scan your car....? Seriously?

I'm not even a GP guy, but if I had to guess you have a problem with the rear O2 sensor.... Inspect the wiring, or replace it... doesn't seem like rocket science.

Yikes, might as well pick on the guy for his spelling of 'desperately'.

 

[boostedguy05]

at idol the car seems fine. give it a little gas and rpms bounce. everything has been inspected.

 

[boostedguy05]

and right now spelling correctly is the least of my problems. sorry

 

[Dasfinc]

at idol the car seems fine. give it a little gas and rpms bounce. everything has been inspected.

If the wiring checks out, I'd start with replacing the O2 sensor since your car is throwing a code for it. O2's go bad all the time.

Try unplugging it and see if the behavior is any different.

 

[10sec]

Rear o2 effects nothing, the RPMs bouncing are due to another problem. Check the EGR, you might have missed that, causing a huge vac leak.

 

[DanJ]

If you're going to call someone out for being a dumbass, you should really know wtf you are talking about.

What kind of headers? I had a pretty nasty leak at the EGR which made my car run like ass for a long time.

 

[Bob Kazamakis]

If you're going to call someone out for being a dumbass, you should really know wtf you are talking about.

What kind of headers? I had a pretty nasty leak at the EGR which made my car run like ass for a long time.

All of this. I had the same issue with my egr and pacesetters because of that stupid tube. I just removed my egr

You just need the rear O2 sensor codes disabled but it won't effect anything with them thrown other then passing emissions.

 

[boostedguy05]

ssac headders

 

[Dasfinc]

Rear o2 effects nothing, the RPMs bouncing are due to another problem. Check the EGR, you might have missed that, causing a huge vac leak.

If you're going to call someone out for being a dumbass, you should really know wtf you are talking about.

When he says 'rear' O2, I assumed he meant the rear bank, but upstream. I know the downstream ones don't do anything. My bad

 

[10sec]

When he says 'rear' O2, I assumed he mean the rear bank, but upstream. I know the downstream ones don't do anything. My bad

Well you ASSumed something and were mean about it. You're the idiot, not him. This is a 3800 thread anyhow, GTFO.

 

[Bob Kazamakis]

When he says 'rear' O2, I assumed he mean the rear bank, but upstream. I know the downstream ones don't do anything. My bad

That doesn't even make sense.

 

[DanJ]

They are a copy of the SLP headers right? The EGR is before the primary O2 so it messes up your O2 readings/fuel trims/etc. I just disabled my EGR as well.

 

[Dasfinc]

Well you ASSumed something and were mean about it. You're the idiot, not him. This is a 3800 thread anyhow, GTFO.

Its been a long day and I'm having a wisdom tooth torn out in the morning, I apologize, but I am far from an idiot...

That doesn't even make sense.

the rear bank of cylinders... FWD cars with cylinders in a V arrangement typically have a "Front" bank, and a "Rear" Bank of cylinders...... how does that not make sense?

 

[Mike K]

If it's running poorly immediately after the header install chances are you burnt a MAF wire, burnt a plug wire or didn't properly seat the EGR. As others have alluded to, it sounds like there's an EGR leak.

 

[Bob Kazamakis]

Its been a long day and I'm having a wisdom tooth torn out in the morning, I apologize, but I am far from an idiot...



the rear bank of cylinders... FWD cars with cylinders in a V arrangement typically have a "Front" bank, and a "Rear" Bank of cylinders...... how does that not make sense?

Clearly you've never seen a 3800 exhaust configuration. Just go away.

 

[boostedguy05]

ive heard of people putting pennies in the egr tube to block it off. those of you that did block it off please chime in on how you did it.

 

[Bob Kazamakis]

I just took some 1" wide and 3/8" thick aluminum strip and cut it to size and drilled a hole; put some copper rtv and bolted it over the egr holes on the LIM and header.

Basically made the zzp blockoff plates for like a dollar.

 

[Bob Kazamakis]

http://zzperformance.com/grand_prix/products1.php?id=229

 

[DanJ]

I bought that thing ^

 

[Mike K]

the rear bank of cylinders... FWD cars with cylinders in a V arrangement typically have a "Front" bank, and a "Rear" Bank of cylinders...... how does that not make sense?

Front o2 is the heated sensor (and the only main sensor) which reads both banks of cylinders. The rear o2 is just the cat efficiency sensor. You're confusing front o2 with front bank o2. The 3800 does not read each bank separately.

If his rear o2 is bad it will have no affect on performance.