CEL code 80 - Honda Prelude Forum

SlowSi · 03-26-2005, 12:33 AM

My 98 SH threw a Code 80 (8 long flashes) on the way back from school. I did a search and only one thread popped up about CEL code 80. Is it the EGR valve/line?

The damn link to toronto page isn't working.

EDIT: I hope it's not that cuz that valve is $100!!!

Prelude1897 · 03-26-2005, 03:54 AM

Looks like you have a problem with your EGR valve. Just clean that out and see what happens.

Here is another site you can find the codes
http://www.londonautoclub.org/html/t..._CEL_Codes.htm

bauer778 · 03-26-2005, 08:52 AM

i cleaned my valve a week ago, i was throwing a code too. i took it off, got a wire brush, some pipe cleaners, aond some carb cleaner. just take the EGR off and clean that, then i took the pipe cleaners and stuck them in the holes in the intake manifold, just do that a bunch of times and it will help clean it out. i twisted 4 pipe cleaners together so it would be thicker to clean out hte holes better. Use alot of carb cleaner when your doing it, it helps break down all that gunk.

SlowSi · 03-26-2005, 09:18 AM

What all did you have to take off to get inside the intake manifold?

bauer778 · 03-26-2005, 09:49 AM

just the EGR valve, its 2 nuts, a hose and a clip for the electronics, it takes about 5 min to take it off, DONT DROP THE NUTS, its a PITA to find them, it did it 2x, it sucks. when you take the EGR off you will see the holes that i am talking about.

bauer778 · 03-26-2005, 09:57 AM

here is a pic of the holes you have to clean

SlowSi · 03-26-2005, 10:52 AM

Did you dip the pipe cleaners in carb cleaner and then scrub?

bauer778 · 03-26-2005, 10:54 AM

i dipped it in then sprayed the cleaner in the holes and let it sit for a few min

SlowSi · 03-26-2005, 11:01 AM

So the carb cleaner doesn't hurt anything in the EGR process? It all needs to evaporate before reinstalling everything, right?

bauer778 · 03-26-2005, 11:04 AM

yea i waited about 20 min before i reinstalled everything

bauer778 · 03-26-2005, 11:06 AM

just dont get the carb cleaner in the sensor at the top of the EGR, actually i dropped mine in a bucket of old anti freeze and used carb cleaner, it was totally submerdged, it still works fine but i would not reccomend that

Kartelli · 03-26-2005, 11:24 AM

and dont strip the nuts when taking it off... I had same code coming up with mine.

had to pay 100 bux to get them chizled off + cleaning of the EGR.... result was no code though

SlowSi · 03-28-2005, 12:11 PM

will the code automatically reset or will I need to reset the ECU?

bauer778 · 03-28-2005, 12:14 PM

you need to reset the ecu

SlowSi · 03-28-2005, 01:07 PM

Ok, one last thing. How the hell did you get to those 2 nuts?? I can't fit a socket wrench in there and I don't have any room to torque it with a wrench. Did you take the VTEC solenoid off to get to it?

EDIT: What if some of that gunk in those holes gets into the combustion chamber?

Prelude1897 · 03-28-2005, 02:05 PM

I used a small socket wrench and was able to get to mine just fine

SlowSi · 03-28-2005, 02:49 PM

Geez, how small? There's only about an inch of clearance to work with between the nut and the EGR lip. My main problem is getting the nut off closest to the engine block.

bauer778 · 03-28-2005, 08:42 PM

i used the small ratchet set and had a really long extension, it was fairly easy for me

Kartelli · 03-28-2005, 11:14 PM

or use a swivel head on your ratchet to get some torque at an angle...

CIT_lude · 03-29-2005, 01:08 AM

SlowSi - I totally feel your pain. Last year I started getting the same code and after reading up, tried to do this. Unfortunately, I've only got a very basic set of tools, and I couldn't do it with sockets or regular wrenches, so ultimately no dice. While I was waiting for a more opportune moment to try again, the CEL went out on its own! This was after like one or two months of continuous CEL, so no mistake. About a year later it came on again for like a week, but it's gone again now. Maybe I just have a marginal case? Dunno, but I passed cali smog, so I'm not going to mess with it until I have to.