2011年8月1日 · C4 General Discussion - EGR delete, pros and cons - My EGR valve has gone bad and before I start burying the area, I have to either buy a new one or do a delete. A new EGR valve is around $85 from NAPA but none of the local stores have them, I'd have to order it online or go to a stealership and buy one for probably...

2008年12月7日 · All you have to do is put a peice of stainless between the Intake and the EGR port on the cylinder head, remove the pump, disconnect all lines, replace the EGR valve with a plate, and get a new prom.

2011年4月11日 · Some potential problems that would cause a code on these systems are: Ruptured EGR diaphragm, broken vacuum lines, defective or plugged EGR Solenoid, poor connections to the solenoid or diagnostic switch, or a failed diagnostic switch

2013年9月27日 · I recently bought an 85 C4, due to a low speed miss I disconnected the EGR vacuum, this corrected the miss. Can I just delete the EGR's and what about the harness. This vehicle is no-longer required to have emissions, so I'm looking to clean up the engine bay.

2012年11月1日 · You can remove all EGR equipment (hoses,vacuum lines valves,pump,etc.)except the EGR solenoid at the manifold. You need to leave the solenoid plugged in electrically to trick the PCM or you will get a code.

2015年6月9日 · you might try wiring the primary side of a relay to the egr valve control solenoid and the secondary side of the relay have ground your temp switch. so it only goes ground when egr is commanded on.

2009年3月16日 · Some potential problems that would cause a code on these systems are: Ruptured EGR diaphragm, broken vacuum lines, defective or plugged EGR Solenoid, poor connections to the solenoid or diagnostic switch, or a failed diagnostic switch

2011年2月9日 · If you have that sort of problem it is due to a poorly tuned engine, or using the wrong type of fuel, not the EGR system. A malfunctioning EGR system can cause running problems and that is why people remove them instead of fixing them in the false belief that removing them does nothing.

2007年3月1日 · Removing the AIR or EGR will not yeild any hp. The AIR system delete will remove weight. My 86 has the EGR pipe deleted and the intake manifold and exhaust manifold have block off plates. The EGR and solenoid are still there, but not functional. No codes and the car runs as cool as the other side of the pillow. :laughing:

2019年10月14日 · C4 Tech/Performance - EGR Delete howto - So...I've started thinking of deleting my EGR system on my 1985 C4. Not for performance reasons (I don't think it will help with performance anyway), but rather I'd like to clean up my engine bay a bit and having fewer lines going everywhere will make it easier to work on the...