i have a 97 civic HX and my EGR went bad, so i have to replace it but i dont want to spend $150 for a new one because i'm going to do a motor swap hopefully over the summer. So what i wanted to ask is if i unplug the egr will that cause any damage to my motor??

 

anyone???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by freddysEF &raquo;</TD></TR><TR><TD CLASS="quote">i have a 97 civic HX and my EGR went bad, so i have to replace it but i dont want to spend $150 for a new one because i'm going to do a motor swap hopefully over the summer. So what i wanted to ask is if i unplug the egr will that cause any damage to my motor??</TD></TR></TABLE>


"The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases."

read more if you want - http://autorepair.about.com/od...e.htm

all in all, its very possible that it can make your car run like sh.it and give you pretty bad acceleration...so yea, it can cause some harm

 

i remember reading on how to bypass this by changing the ECU or something but i cant remember what ecu or things to use. does anyone know

 

You might be able to run a P2P from a Ex

 

Honestly EGR does very little to drivability to a vehicle.

The only things that cause noticable power differences or stumbling is if the EGR ports within the intake manifold/runners are stopped up then there can be a pronounced stumble at lower rpm under load/acceleration, but unplugging an EGR valve may not even be detectable when driving the car.

The HX is certainly the most **** of all emissions systems, but even still I can't think of any harm done (other than to our poor little environment ) by unplugging the egr valve.

By the way:

What is the exact p code number you're getting? Far too often people assume an EGR code is due to the egr valve, but it could be the portsbeing stopped up , a vacuum hose, etc.

 

codes P1491, P1300, P1399,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by freddysEF &raquo;</TD></TR><TR><TD CLASS="quote">codes P1491, P1300, P1399,</TD></TR></TABLE>

Nice. I literally just shut my main PC down that has my all data programs, so the only one of those codes I know off the top of my head is the P1491 - EGR valve lift insufficient. You're correct in saying you need an EGR valve.

Those other codes? I'll be happy to look up the flow charts tomorrow, but I suspecty them to be piggy back codes thrown because of the bad EGR valve as well.

 

the other ones are misfire because of the bad EGR so it makes my car kinda like stater but then it goes away and i stop for a few seconds and not it doesnt do it when i unplug it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by freddysEF &raquo;</TD></TR><TR><TD CLASS="quote">the other ones are misfire because of the bad EGR so it makes my car kinda like stater but then it goes away and i stop for a few seconds and not it doesnt do it when i unplug it </TD></TR></TABLE>

You are correct.

P1300 has a flow chart, but specifically states that a code P1491 must be repaired and cleared first and then only proceed if P1300 code returns alone.

P1399 has no flow chart, and again does specifcially list EGR and/or possible valve clearance issues as the root.