Need Some Help!

[TruThug]

So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

1999 Pontiac Firebird V6 (All Stock)

The Reason:
Definition
-EGR valve circuit range/performance
Probable cause
-Open or short circuit condition
-Poor Electrical Connection
-Faulty EGR value
-Blocked EGR Passages

Guessing the Code it has is P0404.

[hippiespace]

take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.

[Cutlass]

So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

1999 Pontiac Firebird V6 (All Stock)

The Reason:
Definition
-EGR valve circuit range/performance
Probable cause
-Open or short circuit condition
-Poor Electrical Connection
-Faulty EGR value
-Blocked EGR Passages

Guessing the Code it has is P0404.

Its most likely a bad EGR valve. If the wiring and connector look ok, then try replacing the valve.

take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.

Its a V6

[Smittro]

take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.

ALL 3800 series I-II-III have the EGR system...

[Smittro]

So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

1999 Pontiac Firebird V6 (All Stock)

The Reason:
Definition
-EGR valve circuit range/performance
Probable cause
-Open or short circuit condition
-Poor Electrical Connection
-Faulty EGR value
-Blocked EGR Passages

Guessing the Code it has is P0404.

All points the the wires being possibly melted by the EGR chimney pipe..

Or a dead EGR..

[hippiespace]

Its most likely a bad EGR valve. If the wiring and connector look ok, then try replacing the valve.



Its a V6

My bad I skipped right over that important piece of info.

[mangus2k1ws6]

take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.

I agree with this guy!

[Smittro]

I agree with this guy!

3800-II does'nt have an air (system) pump either..

Just an EGR with a 6-7 inch chimney pipe..

Removing it adds/does nothing for the 3800..

[mangus2k1ws6]

3800-II does'nt have an air (system) pump either..

Just an EGR with a 6-7 inch chimney pipe..

Removing it adds/does nothing for the 3800..

an egr recirculates the exhaust back into the motor... hence taking it out will help with air/ fuel but you will ppollute more

[Smittro]

an egr recirculates the exhaust back into the motor... hence taking it out will help with air/ fuel but you will ppollute more

I know what an EGR does and is. I also know about the 3800..

We already have a 85mm factory inlet TB..

Again Running with or without the EGR will do nothing on the 3800..

It will NOT pollute more..

Because in order to run without out it you WILL need to TUNE it just so it will run right..

Hence eliminating the code and the issues that arise from it's removel..

It will NOT help with air/fuel anything...

If you want help with air/fuel mixtures put a blower on it and have it tuned..

[KMdef9]

To the OP, if smittro says it about the 3800, I would take it as law, lol. I don't think there isn't anyone on this site who knows more about them.

[Smittro]

To the OP, if smittro says it about the 3800, I would take it as law, lol. I don't think there isn't anyone on this site who knows more about them.

Thanx can always use inproving..

However, sure the removel of the EGR will keep hot exhaust gases out of the combustion.. But the entire upper and lower intakes get heat satuated because of the hot pool of coolant that sits in the LM, and the hot coolant that flows through the TB itself.. You're going to get hot air no matter what.

So the gains from the removel of the EGR will be minimal @ best equaling pretty much nothing..

I have yet to see or read anywhere that EGR removel on the 3800 has produced "other than stock" results..

[Smittro]

It's also imho the reason you LS1 guys see gains from just a lid.. But the 3800?

Negligible....

You are'nt overcomming poor cylinder head design with removing things and/or anything bolt-on off the shelf N/A..

That's why the l67 was invented..

Same heads right down to the castings as the L36 with the exception that the l67 heads have bungs for the injectors to accomadate(sp) the Eaton 90's gurth..

Springs are a slight bit harder and that's it...

[jwalters]

That EGR will screw it up every time.

[Smittro]

That EGR will screw it up every time.

Sure can..

A faulty EGR can take the drivibility right out of it..