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At-Least-It's-An-Evo
08-11-2005, 01:03 PM
So after doing my headgasket a couple weeks ago, my car doesn't overheat anymore. I did beat on it a little bit before this all started happening... I'm not too sure if it got hot like this immediately after the HG was replaced. Here's the issue though and what I've done so far.

The car did sputter and stuff while I was beating on it most likely due to the MSD not being hooked up correctly so it'd cut out at 5k rpm. The settngs on the afc at the time were super rich and conservative for not having a real "tune" on the car (afc was in the ++++ in the upper rpms with 650s). I was also on 110 octane only running 14 psi. So little boost, little timing, lotsa octane. The base timing was at 5 degrees and I assume the stock ecu woulda prevented anything from blowing... maybe?

I've changed the thermostat to a 180 degree one, pretty much flushed the coolant system, got a new radiator for it, put a 12" fan on it that is always on whenever the car is, and yadda yadda.

The problem isn't while crusing or driving, it's while idling. The car will cruise at about 180 degrees, but when I come to a stop and/or let it idle for... 2 minutes? The temp gauge starts to move. It moves pretty quickly. Like let's say it's at the "E" in TEMP, it'll start moving to the "M". I've logged it with the AEM EMS and it shows that when it's at the M, it's at about 194-196 degrees. When it gets to the P, it's a little under 200. I let the car idle for about 15 minutes and it got to the P. This is with the fan blowing at ALL times. The hottest I've seen/let it get to was about 205 and on the faulty temp gauge, it is nearing the "hot" part of the gauge which makes me subconsciously paranoid as it would with anyone else. I know the AEM says it's only at about... 205 degrees, but shit, Um..... what I'm really wondering is... if my headgasket is blown again, or if I'm kinda screwed and the block could be warped. I don't feel like doing the HG again, but I guess I will if I have to. I'm more or less wondering if anyone has ever had this issue and has resolved it successfully. ANY input would be greatly appreciated from anyone.

-CP Lee
EclipseGST
08-11-2005, 01:12 PM
I'm thinking your fine and the stock gauge is screwed up. I would go off of what AEM is telling you over your stock gauge. Do you have or know of a aftermarket temp gauge you could throw in quick just to test it? If I remember correctly idle temp on a 1g is normally 210ish on a hot day. My motor runs 210-215 on average at idle in warm weather. I'd rather have it around there so I know the moisture is all boiled out of the oil. Up around 230+ in this weather is when you have to start worrying. My $.02~


Edit: Having the AFC in the +++ range in the upper RPM's would mean your flowing more than stock air flow at that RPM so your probably hitting a mild fuel cut. Think of 0 being stock. 650cc injectors are quite a bit larger so there for you have to subtract the air coming in to lean out the car. Your numbers should be in the -35% range to get ya started. Good Luck
91nbtsi
08-11-2005, 01:55 PM
double
91nbtsi
08-11-2005, 01:57 PM
Get a bigger fan Cher! Or another. And listen to the AEM temp from the sensor, not the stock gauge. I remember mine would do the same thing, the DSM temp gauge could be burried and it is still only at like 220 or something, not hot enough to screw it up big time. Remember that with a 180 thermostat, that is the temp that the stat starts to open, so it will run hotter than 180 usually.
JET
08-11-2005, 02:29 PM
Is it possible that your are putting so much fuel into it that it is starting to run hot? I would seriously doubt that the block is warped. Cast iron really doesn't like to warp. The head will warp way before the block. Did you happen to check the flatness of the head when you had it off? That could be a definate possibility.
Pushit2.0
08-11-2005, 04:04 PM
My 90 last year ran 185deg just about all the time. I think it got up to 190 some times but never over 200.

~John
At-Least-It's-An-Evo
08-11-2005, 04:05 PM
Is it possible that your are putting so much fuel into it that it is starting to run hot? I would seriously doubt that the block is warped. Cast iron really doesn't like to warp. The head will warp way before the block. Did you happen to check the flatness of the head when you had it off? That could be a definate possibility.


Yep, had the head decked. It was warped concave down between cyl #2 and #3 but it was decked and it was all good. I was thinking of a buncha different possibilities but maybe i'm just paranoid. :(

My other car never got over 195 and always stayed around 190.
91nbtsi
08-11-2005, 04:17 PM
You need another fan girl. If it is overheating when you slow down, it means you aren't getting enough airflow past the radiator to transfer the heat away. If it was happening when you were hammering on it, then I would say head gasket or something else. Quit being so paranoid and put a bigger turbo on there and make big power:)
At-Least-It's-An-Evo
08-11-2005, 04:22 PM
Man, my other car never did anything close to this, but I s'pose I'll try another fan one of these days girl Burgess.
91nbtsi
08-11-2005, 04:31 PM
Man, my other car never did anything close to this, but I s'pose I'll try another fan one of these days girl Burgess.

Good. Glad we have that taken care of.