Does a 2004 LB7 Duramax have EGR?
My ’04 LB7 has no Cat or EGR.
How do I know if my EGR valve is bad?
What are the symptoms of a failing EGR valve?
- Your engine has a rough idle.
- Your car has poor performance.
- You have increased fuel consumption.
- Your car frequently stalls when idling.
- You can smell fuel.
- Your engine management light stays on.
- Your car produces more emissions.
- You hear knocking noises coming from the engine.
Does a 2001 Duramax have an EGR?
In 2001, the Duramax turbo diesel was introduced to the GM 3/4 ton, 1 ton trucks and commerical trucks. In 2004.5, the EPA required a catalytic converters (Cat) and exhaust gas recirculation (EGR) on the LLY engines. This transmission was discountinued in 2007 by GM.
What does an EGR valve do on a Duramax?
The EGR uses inert gas (exhaust has no oxygen in it) and recirculates that gas into the combustion cylinder. Since 2004.5 they have been used to reduce NoX emissions, act as buffer in the combustion cycle between air and fuel and reduce combustion temperatures.
What year Duramax has EGR?
Hitting Chevy and GMC trucks starting in 2004, the LLY Duramax is the 2nd version of the 6.6L V8 Duramax. In order to meet stricter emissions regulations, the LLY replaced the LB7 engine and was the first Duramax to use EGR emissions technology.
How do I get rid of LB7?
Longer way- Completely remove the EGR system.
- Shut off the codes w/ EFI live.
- Remove vacuum pump.
- Replace Cali serpentine belt with federal belt.
- Install federal passenger side up pipe, or cut off riser and weld shut.
- Remove EGR Cooler.
- Block intake where EGR cooler used to be attached.
Can I drive with a faulty EGR valve?
Can I drive with a bad EGR valve? Technically, you can drive your vehicle with a bad EGR valve, but your vehicle will run rough, shake at idle, and a check engine light will be illuminated. You might also hear popping sounds while driving down the road.
Does LB7 have emissions?
LB7 Emissions The 2001 LB7 Duramax was the first diesel engine in this class to utilize common rail technology. LB7 Duramax trucks also came before diesel emissions, so there is no DEF, DPF, or SCR here! You could just slap on a straight-pipe exhaust with no repercussions!
Does the LB7 have EGR?
If its a federal emissions truck with a LB7 it never had egr. Only california emission lb7 trucks had egr on them. Federal emission trucks with lb7s never did. Is it a California truck originally?
What is an EGR valve what does it do?
What the EGR Valve Does The EGR valve is a small component designed to allow the flow of exhaust gases into the intake manifold in controlled amounts. As such, it’s a simple valve that closes and opens as needed.
What are the advantages of EGR valves?
A properly operating EGR can theoretically increase the efficiency of gasoline engines via several mechanisms: Reduced throttling losses. The addition of inert exhaust gas into the intake system means that for a given power output, the throttle plate must be opened further, resulting in increased Reduced heat rejection. Reduced chemical dissociation.
What’s the difference between EGR and PCV?
EGR lowers Nox emissions by keeping combustion temps down — but PCV gets all the *unburned* volatile fumes that would otherwise be vented to atmosphere, and routes them to the intake under vacuum. Save Share