Here's my new problem people.



After about 5 mins. of driving the temp gauge tops out......I'm thinking I've blown a seal for sure........I pull over...........I pop the hood *shudder* Nothing's wrong! It's not boiling, the radiator's as cold as ice. The only thing that's hot on the fother mucker is the damn radiator hose (duh). Now I'm scared to drive it. I don't want to blow my engine, but I'm not even sure if the gauge is right.........https://www.nopistons.com/forums/pub...1047683664.gif

you might need to fill it more



let the steam vent out and keep filling it up

If the rad stays cold, and one of the hoses are hot, you need a thermostat. Use the mazda OEM *only*

But I just replaced the stat!!! DAMN BATMAN!!!

Mazda thermostat?

your fan clutch could of blew a big one! I just experienced the same thing just a few weeks ago, check to see if its pulling air when its idling. I had replaced everything on my coolant system to find out the fan clutch was the one to blame. After replacing the fan clutch my temps stayed low.

I really dont know why you all are so stuck on Mazda thermostats. The one I picked up at autozone has actually made my car run cooler and warm up faster. Its not a 160°F one either...

And how long have you had it?

Well here's the skinny on my situation. I just got a thermocrap, I mean Piece of crap, I mean thermostat at Autozone, and I think that one's the problem. I have an E-Fan that fits completely over the radiator and also fits under the fan shroud. We're talking BLIZZARD under there...so it's not the fan.... I'm thinking it's the damn stat again! I'm gonna go to mazda and get one, I'm sick of screwing around. I'll post with any updates.......

Im in the broke 7 club again too......



Toasted the 3rd starter in 6 months....



=) TB mod requires lots of cranking in utah's winters..

A few months now? I dont remember exactly when I bought it..

Sure enoughk it WAS the thermostat. I have another problem now. The piece of crap won't crank. It makes a high pitch whirring, with a little grinding. WTF is that now!?

possibly the gear that engages the starter to the flywheel is stripped

Or a tooth on the flywheel is broke. Had it happen to my Trans Am a few years ago...

Turns out the starter was hot, and got stuck. A nice wrap from a screwdriver got it back running.... Here's my problem AGAIN... It'll idle for about 30 mins with the temp gauge about 3/4 of the way up...then it'll just shoot up almost to the top of the normal bracket... Here's the catch, the faster I go, or the higher the RPMs are, the cooler it gets... Last night when I let it idle, it was overheating...When I held the RPMs at about 4000 rpms, it slowly went back down to the middle of the normal bracket. After idling again, it slowly crept up... Then back down @ 4000 RPMs.......Wasn't aware you could cool an engine by revving the crap out of it...I'm really confused. I was told it might be my exhaust, because it's old and it's a little rusty. After my friend got his exhaust fixed, his seven quit overheating. I'm getting really pissed off cause I need my car, and I can't figure out what the hell's going on with my car. If any of you could help in any way possible, I'd be very appreciative......https://www.nopistons.com/forums/pub...1047683358.gif

Now that is weird considering you have an Efan...



I don't know if you have changed your thermostat yet but it sounds like it failed in the closed position (or in between opened and closed) or there is an obstruction or debris somewhere. What is happening when you rev your engine? = water pump is turning faster thus moving the water/coolant through out the engine and the cooling system faster and with greater force. There fore you might be clearing this obstruction or partially closed thermostat by sheer force at higher RPM. Good luck man it sux to be 7-less.



You should really consider flushing your radiator before installing a new MAZDA thermostat just so you can get a clear slate and take one more variable out of the equation.

I am guessing one of 2 things.



1. Your electric fan isnt all you think it is.



2. Your water pump is going to go.

From what I have been reading on other threads, the second generation alternators aren't really cut out to push enough amps to keep a electric fan happy, if you got a s4 the alternator is putting out something like 60Amps where the S5's is not much more. I am thinking that whats going on is that not enough juice is being supplied to the e-fan at low rpm's to have any effect, only when you really get the alternator crankin' is it helping you. But that is just a guess. I had/having the same problems as you are with the over heating biz. For me I found that my fan clutch died so I replaced it and also bought a koyo alu. radiator which keeps the temps down at 1/5 the temp gauge, but the car still aggressively climbs to the 1/5 mark in a matter of minutes, where as before my whole pickle, it barely every moved off the temp gauge.

But now I am thinking that the problem is else where in the equation, I have a itchy feeling that I am running lean, and thats causing my car to get hot. I bought a autometer a/f shitometer for shits and giggles to see if my car was ruin stoichometric or what not, and found it's buring the gauge to the lean side of the meter at Idle. So now I got to find out if I am low on fuel pressure, or maybe something like a bad O2 meter futsing with the mixture.



So you might want to check to see if everything savvy else where in the engine bay, because the culprit might not just be a problem in your coolant system.

I completely understand what you're saying, and I guess I'm gonna take the s5 alt. I have and throw it on my s4 engine... That should have enough amps to power everything. I put the Efan on because my fan clutch died, and I don't wanna spend any more money on the stupid things if I already had an E-fan. Here's my other question:



I currently have the E-fan to turn on with the second turn on key (right before you turn to start). I think that's having a negative impact on the draw, making my engine really hard to start. You have to sit there and crank it forever even with my fuel cut-off switch on (no fuel). It takes forever to kick, and I've tried a million and a half things...



Do any of you know where I could connect the E-fan so it would only turn on when the thermostat told it to? I have no idea, I have the Hanes manual, but I figured my current setup would work... Now I'm willing to try anything. If any of you have any wiring diagrams or anything, please email me at kornmanxxx@yahoo.com. Thank you all so much for your help. Hope to hear from you guys soon,



Sincerely,



Joel Hager



a.k.a



rotary_revolution_0

also make sure the belt to your water pump isn't slipping. Also, when you took the clutch fan off did you put the bolts back in? Not to insult your intelligence, but i've seen someone do this before.

No, the belt's not slipping, and Yes, I put the bolts back in... Thanks for trying though https://www.nopistons.com/forums/pub...1047683894.gif