Can I disconnect my EGR valve?
No, unplugging it will not stop the EGR cooler from failing…the hot gases will still be there to melt the solder and cause a leak.
What happens when EGR solenoid goes bad?
If the EGR solenoid fails it can disable the EGR system from recirculating exhaust gases. For certain engines this can cause a large increase in cylinder and exhaust gas temperatures. Excessively high cylinder temperatures can cause engine ping and knock, which can lead to serious engine damage if left unattended.
Is it OK to drive with a bad EGR valve?
Best Answer: Yes. An EGR valve reintroduces exhaust gas to cool the combustion chamber, making it run cooler, due to less oxygen. So if you have a faulty egr valve, emissions will go up, and you run the risk of overheating and damaging the engine.
What happens if an EGR valve is stuck closed?
If the EGR system is clogged up, or the valve is stuck closed, the combustion temperature increases. This may cause pinging (detonation), as well as surging on light acceleration. In a diesel engine, a bad EGR valve is one of the causes of a black smoke. The Check Engine light might also come on in either case.
Can you fix a stuck EGR valve?
Luckily, fixing the EGR valve is easy enough. EGR valves either become stuck in the open position or stuck in the closed position, so once you’ve figured out which problem plagues your own truck, you can get on with the rest.
Should EGR be open at idle?
The EGR valve is closed when the engine is starting up. During idle and at low speeds, only a small amount of power is required, and therefore only a small amount of oxygen, so the valve gradually opens – it can be up to 90% open at idle.
Can bad EGR cause hard starting?
If your EGR system becomes inoperative or just leaky, it could create problems with drivability, such as a rough idle, detonation, hard starting, stalling, and increased NOx or hydrocarbon emissions in your exhaust.
At what temperature does an EGR valve open?
EXHAUST GAS RECIRCULATION CIRCUIT: BASIC PRINCIPLES
| Diesel | Gasoline (direct-injection engine) | |
|---|---|---|
| Exhaust gas temperature when the EGR system is active | 450°C | 450°C to 650°C |
| Why is an EGR system used? | To reduce nitrogen oxide, soot particles, and noise | To reduce nitrogen oxide and fuel consumption |
Is removing EGR valve illegal?
Technically speaking it is “illegal” to tamper either any emission control systems on a vehicle. For EGR valves this is a grey area as you car won’t fail its MOT with the device removed unless it causes the vehicle to emit more than the allowable emissions limit. …
Can car run without EGR?
As per my research and going through the threads on EGR valves its OK to run without EGR. Yes it might affect the environment but no harm to engine as such. there are people who are running without EGR for more than 50k km. Also in all remapping they disable the EGR.
Will removing EGR fail MOT?
Why EGR valve removal is worth it A clogged EGR valve will become stuck in an open or closed position and this can lead to irreversible turbo and engine damage. Due to this, many motorists choose to have EGR valve removal. This is perfectly legal. A car will not fail its MOT because it has had an EGR valve removal.
Is it worth replacing EGR valve?
On older cars operated by engine vacuum, the EGR valve diaphragm can deteriorate and leak, causing a rough idle and a check engine light. In that case, the valve should be replaced. If your car is running fine at idle and you don’t have a check engine light, there’s no need to replace or clean an EGR valve.
What is the lifespan of an EGR valve?
approximately 10 years
Is EGR delete worth it?
Deleting your EGR will ultimately help ensure the longevity of your diesel engine, improve fuel economy, and you may even notice some performance improvements. And a gas engine would work just fine for them.
Should I block my EGR?
When you open the intake manifold where the EGR attaches, you will see why it is recommended to block it off. It will be half blocked with black gunk! That is the EGR valve.
Will removing EGR valve fail MOT?