2G Don"t disable the EGR valve

[InterceptorF]

I have been fighting my GST for a while now with drivability issues. I decided to put the EGR circiut back on the car and VOLA! it fixed all my idle issues, drivabilty came back and now I am confident in the car making it home. I don't know why I ever took it off but I am glad I decided to put it back on!!

 

[1997 eclipse gs-t]

thanks well my coolant does go down sometimes but i have no smoke and i got coolant system pressure tested and there where no leaks so wtf. does the leaking bov have anything to do with it.it leaks bad got new one comming tommorow.

 

[DSM1G90]

Sounds like a cooling system that needs drastic and desparate attention....

Only time I heard of a melted piston is due to excessive knock or ping. Old car motors before the EGR was even heard of, had melted piston problems due to situations listed above.

Same here: went out to a yard and found a good bunch of 1.8's with blockoff plates. Snagged a few plates, put on on my vehicle .. and it still runs great.

 

[lauj2gdsm]

for the guys arguing how much of a problem a egr delete can cause. can one of you please explain to me how my jdm 2g 7bolt 4g63 with no egr has been running perfectly fine for the past 3yrs with no issues???

 

[Bishikid]

for everyone aruing against it because they've had problems.... did you guys rerout your vacume lines? I went taboo delete when I went EGR block off plate.

 

[99gst_racer]

I'm wondering if the OP removed the EGR and run a block-off plate or just left it installed and simply disconnected the lines?

Idle and driveability issues sounds more like a vacuum leak to me. And that cannot be blamed on an EGR valve (or lack thereof). Pretty silliy to make bold statements and jump to conclusions when you don't understand how the system works.

 

[WES_393]

I'm wondering if the OP removed the EGR and run a block-off plate or just left it installed and simply disconnected the lines?

I was literally just about to post the same thing. If he simply unplugged the vacuum lines and left the whole system swinging in the breeze, then it's no wonder it had idle problems.

 

[Bishikid]

I'm wondering if the OP removed the EGR and run a block-off plate or just left it installed and simply disconnected the lines?

Idle and driveability issues sounds more like a vacuum leak to me. And that cannot be blamed on an EGR valve (or lack thereof). Pretty silliy to make bold statements and jump to conclusions when you don't understand how the system works.

+1 agree

also a more likely possibility

 

[TSI_93]

I've blocked my EGR on multiple vehicles, including DSMs, I do it nearly anytime I have access to the egr since we don't have emissions testing in Alabama. I just don't want that crap in my intake.

Blocked egr and oil catch on my last car and after I cleaned/rebuilt the throttle body I had no buildup of carbon/gunk in the intake tract for over 10k miles... EGR delete will not make your car run poorly unless you do it wrong.

 

[ishnish]

Well I just got a CEL today for the first time and it's a code 0400 which states "exhaust gas recirculation malfunction" or something along those lines. Anyone know how to fix this? I know it's related to the EGR. I do want to remove my EGR valve and all that but I don't want to leave a problem or cover it up by disabling the CEL.

 

[bryanwheat]

Well I just got a CEL today for the first time and it's a code 0400 which states "exhaust gas recirculation malfunction" or something along those lines. Anyone know how to fix this? I know it's related to the EGR. I do want to remove my EGR valve and all that but I don't want to leave a problem or cover it up by disabling the CEL.

If you don't remove the solenoid than you won't get a check engine light. It just check's for resistance in the circuit of the solenoid.

 

[ishnish]

I haven't removed anything. I'm not sure what you mean. How does this tie into malfunction with exhaust gas recirculation? I've read that it can cause my intake manifold to get really dirty and I'd have to clean that and my throttle body with some carb cleaner or something but I'm not sure how far this is true. I really hope it hasn't negatively affected performance but honestly the last few days I've felt as if my car has been feeling like it's got less power. Then today I got this CEL so it makes me wonder.

 

[eligst21]

He was stating that by blocking off the egr, you wont get a cel unless you unplug the solenoid that has the vacuum lines running to it. The ecu just checks to see if that solenoid is giving resistance and assumes it is working.

A question on my part, so a bad pcv will cause air to come out of the gas tank? Because i have air coming out of mine, i thought it was a bad breather or release valve on the tank. I have my egr shut off in link, but it is still hooked up and runs the vacuum lines and no block off plate.

 

[ishnish]

What's weird is that my friend and I both installed link about a week ago on the same day. He got the same exact CEL today which he was telling me about earlier and I honestly didn't know why he had it. Then I ended up getting it later on a few hours later. What's funny is I installed link with his help a few hours later after we got his installed. It's as if it's on the exact same time frame.

Could this really be an issue with the EGR? Do you guys think that maybe it's cause we're on a 95 ECU as opposed to a 98 and 99? So maybe things are read a bit differently? I HATE seeing that light I really want to fix this issue..

 

[007jimmy]

What's weird is that my friend and I both installed link about a week ago on the same day. He got the same exact CEL today which he was telling me about earlier and I honestly didn't know why he had it. Then I ended up getting it later on a few hours later. What's funny is I installed link with his help a few hours later after we got his installed. It's as if it's on the exact same time frame.

Could this really be an issue with the EGR? Do you guys think that maybe it's cause we're on a 95 ECU as opposed to a 98 and 99? So maybe things are read a bit differently? I HATE seeing that light I really want to fix this issue..

I have a 95 ecu with link with zero emissions on my 97 and no CEL. Did you disable all the solenoids with link?

 

[synthetek]

I HATE seeing that light I really want to fix this issue..

Go into ecmlink software, go to DTCs and uncheck the box next to Evap/EGR/MDP

 

[ishnish]

I have a 95 ecu with link with zero emissions on my 97 and no CEL. Did you disable all the solenoids with link?

I did not, but won't disabling the solenoids only cover the problem?

Go into ecmlink software, go to DTCs and uncheck the box next to Evap/EGR/MDP

I could easily uncheck it but the thing is I want to fix the problem

 

[synthetek]

Test the EGR solenoid, check the vacuum lines, test the MDP. Have you tried to clear the code to see if it comes back? Have you considered just blocking it off? the only negative effect of blocking it off is the check engine light but thats why they have the option to disable it in ecmlink.

 

[eligst21]

If you disable it, i thought it stopped sending signal and didnt read the egr as even being there. So there is no signal being sent to the the solenoid which, if no vaccum couldnt open the egr valve. Maybe im wrong. Not sure. But i have mine unchecked and mine runs good with no issues.

 

[ishnish]

Test the EGR solenoid, check the vacuum lines, test the MDP. Have you tried to clear the code to see if it comes back? Have you considered just blocking it off? the only negative effect of blocking it off is the check engine light but thats why they have the option to disable it in ecmlink.

How do I test the EGR solonoid? And how do I test the MDP? What is it for that matter? I don't know all the abbreviations. Haven't cleared the code yet. I do plan to block it off but first want to figure out if I actually have a problem.

 

[bryanwheat]

How do I test the EGR solonoid? And how do I test the MDP? What is it for that matter? I don't know all the abbreviations. Haven't cleared the code yet. I do plan to block it off but first want to figure out if I actually have a problem.

Test to see if there is resistance between the 2 pins on the solenoid.

 

[ed1380]

The "problem" is that you're car is possibly outputting slightly more gasses out the tailpipe. Just block it off and disable the cel. You can also remove the mdp sensor now and wire in a map sensor

 

[rEclipserGST]

95 ecu here with dsm lite v3, zero issues with egr block off plate. Been around.. 45,000 miles?

Just recently I removed the evap canister. Still no idle or driving issues. This is an auto.

 

[Marceldsm]

for the guys arguing how much of a problem a egr delete can cause. can one of you please explain to me how my jdm 2g 7bolt 4g63 with no egr has been running perfectly fine for the past 3yrs with no issues???

I had a jdm 6 bolt vr-4 engine in my fwd talon no egr it was Running better then having an EGR and all that emission crap for that matter.
no canister, no evap solenoids, car was running better then ever, that same engine is right new in my awd.

 

[polarmoment]

I'd be more interested in a way to make EGR fuctional under WOT conditions, as it does help reduce knock and allows for leaning out the mixture without losing power.

Reference: SAE paper 2009-01-0121
Abstract- Researchers used cooled EGR to drastically improve mileage on E85, leaning out to stoich at WOT without loss in BMEP. Gains applied to gasoline too. 20% improvement in E85 fuel consumption at WOT.

 

[rEclipserGST]

If it was functional under WOT, I feel like it would be a boost leak as well as messing with AFR's.

It helps increase mpg's a bit. Your turbo is recycling enough gas's I feel. A lot fresher air too.