Today was a bad day.

[Money$hit]

My car seems like it just continues to get worse everyday, no matter what I do to it.

Ive had an on going issue with overheating when sitting still at drivethru's, lights, etc. I believed it was my heatercore, because I was told that if my windows got foggy/cloudy even after being cleaned semi frequently, my heatercore was likely the cause. So I pulled the heatercore, put one in that had no leaks. Somehow the core is the same part number, but is too long, and sticks out about a half an inch. I decide that everything else fits, so why not just leave it sticking out a bit. I fire the car up, no leaks to be found, etc. I topped the coolant off too.

I start driving around, now the car wants to overheat when Im driving too. I really dont know where to turn next.

Secondly, Ive been having a missfire that I cannot locate. I have replaced plugs, valve cover gasket (was leaking oil into the spark plug holes), fuel filter, ran seafoam, etc. Its still missfiring, just like before.

These problems are also accompanied by the need for new brakes, and finding out why the front end "knocks" under braking/turns. Maybe im just venting, but im honestly ready to just sell the car. FYI, the car is m50 NV, if anyone wants to buy/help solve problems.

[BeirBrennerE30]

what you using for a fan??? did you bleed the coolant system after the swap and the core change?

for the missfire did you replace you coils?

[Money$hit]

I believe its an M20 fan, not sure how to bleed the system, or that it even needed to be done.

As for the missfire, I have not done the coils, that was next on my list.

[gazellebeigem3]

pm sent, nickel.

[madjurgen]

Have you checked the oil or coolant? Kinda sounds like the headgasket might be slowly blowing.

[e30polak]

Misfire issue probably is caused by a bad ignition coil. Could be a clogged injector, or the MAF as well.

As for the overheating, your thermostat could be stuck closed, or you may need a new radiator.

Buy an after market electric fan to help with the cooling, and mount it behind the kidneys where the condenser is.

Head gasket is also a possible culprit as said above.

[e30s52]

get a nice big 16in curved spal fan. 3200 cfm

[MR 325]

How about starting with bleeding the system! That's very important.

[e30s52]

yeah that would be a good place to start

[Money$hit]

As mentioned above, Ive got no idea how to do this.

[e30s52]

if you have a betly thier is a step by step page i beleave

[Farbin Kaiber]

if you have a betly thier is a step by step page i beleave

You call that help? I tried to decode for a time. Think I got it.

[DoriftuEvo]

To bleed the coolant system, you need to loosen the 8mm bleeder screw on top of the thermostat housing while the car is running. You do not need to completely remove the screw, but loosen it until you see coolant dribbling out of the side of the housing. It may take a second for the thermostat to open and allow coolant to flow. Be sure to turn the interior heat control to full hot - this will allow coolant to flow through your newly installed heater core. Add coolant to the expansion tank as needed to make sure the expansion tank does not empty. When there are no bubbles coming out of the thermostat housing, and just a small steady stream, you are done.

Do not do this while the car is hot because the drop in pressure from opening the expansion tank or bleeder screw will cause the coolant to boil and spray out. You should be able to finish bleeding before the car gets hot, but you can do it a few times after letting it cool if you're in doubt.

- others, feel free to add something I've missed.

[Money$hit]

To bleed the coolant system, you need to loosen the 8mm bleeder screw on top of the thermostat housing while the car is running. You do not need to completely remove the screw, but loosen it until you see coolant dribbling out of the side of the housing. It may take a second for the thermostat to open and allow coolant to flow. Be sure to turn the interior heat control to full hot - this will allow coolant to flow through your newly installed heater core. Add coolant to the expansion tank as needed to make sure the expansion tank does not empty. When there are no bubbles coming out of the thermostat housing, and just a small steady stream, you are done.

Do not do this while the car is hot because the drop in pressure from opening the expansion tank or bleeder screw will cause the coolant to boil and spray out. You should be able to finish bleeding before the car gets hot, but you can do it a few times after letting it cool if you're in doubt.

- others, feel free to add something I've missed.

Sounds straight forward. I appreciate the help.

[BigD]

get a nice big 16in curved spal fan. 3200 cfm

Careful, the 3000 cfm "extreme" performance fans are not weatherproofed. The 2300 CFM high performance fans are to be used.