I just replaced my cracked OEM radiator with a Koyo from the group deal here on the forum. I'll run through what I did after taking the old rad out and inserting the new one:

1. Connected both top and bottom hoses
2. Connected the AT coolant lines
3. Connected the reservoir hose
4. Connected the fans power lines
5. Filled the radiator with Prestone 50/50 to the top
6. Left the radiator cap off, started the car, and watched the coolant level
7. Let the car run for about 10 minutes and let the fans go on and off
8. Checked the radiator hose to see if it was hot and it was
9. My engine temp was steady right below half

Decided to go for a drive on the highway and about 7 minutes in my SES light came on. I've double checked all hoses and made sure there are no leaks.

I did put a bit too much coolant in the reservoir, but not by more than a couple millimeters over the MAX line.

So I'm all out of ideas... ANYONE???

 

The car is trying to tell you what is wrong, why would you ignore that? You need to check the codes, it's the FIRST thing you should've done before even making this thread. Seriously, I just don't get the thought process there.

Let me point you to the stickies, which you should've consulted before even making a thread:

http://forums.maxima.org/5th-generat...bs-inside.html

 

Guessing at what it may or may not be is pointless when it could be, literally, anything. It only takes a few minutes to pull the codes yourself, which is much quicker and easier than waiting on a response to a thread.

I never said 'search', I merely posted a quote from the stickies (again, which should be consulted before ever making a thread).

 

Went here: http://forums.maxima.org/5th-generat...bs-inside.html

"2K2+ guys can get the SES light to flash the codes by following studmans' procedure off his website, click !!!HERE!!!."

This link is broke.

 

http://maxima.theowensfamily.com/ecu.asp

Up to step 5.

Or if you search:
http://forums.maxima.org/5th-generat...reviews-2.html -> http://forums.maxima.org/1874741-post50.html ->

 

P0455 = EVAP Control System Gross Leak
P1448 = EVAP Canister Vent Control Valve Open
P1800 = VIAS Control Solenoid Valve Circuit Open

Now... I'll do some searching but any help in the meantime would be greatly appreciated.

Thanks for your time.

 

.

 

After reading through a few older posts on the EVAP codes I learned that a new gas cap could possibly resolve the issue. I just went by Nissan and picked up a new one for $19 and installed it. Reflashed my ECU to rid the codes and drove around for about 20 minutes around town and on the highway. The SES has yet to return...

I know its way too early to say the problem is fixed, but thought I'd mention it.

Also... people have questioned whether the EVAP Canister and Valve control is covered under extended warranty. It is indeed... So I'll bring my car in if the light comes back on at no cost.

Another thing... There is a slight "hisssss" coming from this little part attached to the UIM. What is this:



I've checked every hose around it and they are all good and connected. Is a small hiss normal for this?

EDIT: Ok... really... ONE last thing. A while back when installing headers and putting the UIM back on I missed connecting one of the hoses and started the car. It idled real wild and sounded crazy for a minute before I figured out I missed a hose connection. Is it possible this VIAS code was stored and brought out with my latest EVAP codes? I dont know if thats possible but thought I'd ask the experts.

Thanks

 

That's the VIAS solenoid, what you got a code for earlier.

I've never known one to hiss.

 

Thanks... I guess that would make sense.

Any input on my "EDIT:" to my latest post?

 

Not very likely, no. If you're going to get a code, you'll get a CEL when the code is stored.

 

Dang, add a P0138 and you and me both have the same codes....

FWIW, my P1800 was a bad VIAS Solenoid Control Valve (exactly what you have pictured). Replaced that and it went away. Can't say that it made any difference in terms of performance though (with the code & without the code).

P0455, P1448 - I've been through the gas cap method (currently using OEM), have sanded down the [rusted] filler neck/hole and codes still come up. I think I just have to give in & grab a new canister & valve.

But bottom line, these codes have nothing to do with the radiator replacement.