LQ4 280Z overheating
#1
ok so today i got a full exhuast sytem built and as i was driving home the car starting to act up (no guages hooked up yet) stalling, dying, running funny. I park it, let it cool down and fire it back up. i get it on the freeway and get it home. when i get home i changed the thermostat, water pump and do a coolant full flush. The car is throwing these codes.
p0480
p0481
p1258
they have something to do with the cooling fan but the fan runs as soon as i cycle the key and stays on the entire time. It is a single 14" in front of a large radiator. Im a bit lost at this point and know nothign abou these engines or gassers in general. Im hoping i didnt blow a head gasket or crack the heads. the temperature did reach 284 at some point according to my data log.
Btw i just bought this car and swap was already done.
going to check the oil and do a compession test in the morning to see if this motor is even worth a ****
Well I figured out it was just air trapped in the block. I burped it out and it seems to be running at 200 degrees. Is this normal for these motors? Do they generally run this hot?
p0480
p0481
p1258
they have something to do with the cooling fan but the fan runs as soon as i cycle the key and stays on the entire time. It is a single 14" in front of a large radiator. Im a bit lost at this point and know nothign abou these engines or gassers in general. Im hoping i didnt blow a head gasket or crack the heads. the temperature did reach 284 at some point according to my data log.
Btw i just bought this car and swap was already done.
going to check the oil and do a compession test in the morning to see if this motor is even worth a ****
Well I figured out it was just air trapped in the block. I burped it out and it seems to be running at 200 degrees. Is this normal for these motors? Do they generally run this hot?
#4
TECH Senior Member
iTrader: (12)
Yeah.. I've got a 180 T-Stat and adjusted my fans.. moving is like 180 but in slow and hot traffic.. 190-215..
if you are using the OEM Fan setting. they don't come on till like in the 227/low and 235/high or something like that.. so these engine were designe do be running hot for Emission reason.
BC
if you are using the OEM Fan setting. they don't come on till like in the 227/low and 235/high or something like that.. so these engine were designe do be running hot for Emission reason.
BC