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350z Overheating.

Old 01-20-2015, 09:25 PM
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alvear1311
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Default 350z Overheating.

Not sure where to post but hope this is the correct spot.

Okay, well its been a ****ing nightmare trying to figure out whats wrong.
Let me start by saying, Radiator blew on me, got that replaced, fans stopped working got that replaced, got new thermostat. Its still overheating.
Took it to my mechanic who bled out the car a few times, car worked for about 3 days. then started noticing heater is blowing icy cold air. so i changed my coolant from an autozone one to a Nissan dealership one. and car started heating. worked fine for about a few days, air went cold, took it to my mechanic again i left it there for 3 days. He gives it back to me working and tells me all he did was bleed it out and it worked for about a week. till i was driving back home and my temperature started going up. ive been bleeding it out all day for 2 days straight and nothing. Today i bought an easy spill funnel and burped the air out of the system. it burps fine till after 20-30 min of the car engine running. The funnel starts to overflow with coolant, and it starts to gush out really bad and throw alot of coolant out. so i shut the engine off. tried it again after a while and it still does the same.

Any ideas on what can be wrong.
Cars been on Tire ramps so the front end is jacked up.
Ive drained the coolant and bought a new bottle. Still does the same.
Ive bled it out using the bleeder valve as well. non stop air bubbles.
and just when no air bubbles come out. i drive works fine after a while cold air starts to come out of heater. and engine starts to overheat.
Does anyone know how to fix this its a nightmare.
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Old 01-21-2015, 12:03 AM
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what is your temp guage reading when coolant is bubbling out of the easy spill funnel?
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Old 01-21-2015, 12:07 AM
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its normal temp. but heater is blowing ice cold
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Old 01-21-2015, 12:12 AM
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after 8hrs of working on it. the heater finally blows heat. normal temp. but i am still concerned. After cruising a bit i got back home popped the hood and checked the hoses. Both are hot and swollen. Is that normal? Radiator Cap is hot too. Engine is cool tho. I opened the bleeder valve earlier and air bubbles stopped coming out. took another cruise and yet theres still air bubbles. Also the top of the radiator the black plastic is really hot too. But other than that temp is running normal. The mechanic put his cpu yesterday and changed my temp gauge from 170F to 230F.. so im guessing its overheating but since he changed it to a higher temp read it thinks its normal.
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Old 01-21-2015, 06:28 AM
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swollen hoses and 230d would scare me...I would continue to bleed/purge/refill
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Old 01-21-2015, 03:25 PM
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No its normal temp but with swollen hoses. Is that normal?
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Old 01-21-2015, 03:25 PM
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My engine is kinda hot too. But it says normal temp
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Old 02-06-2015, 09:51 AM
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Wow this is weird...almost like theres a restriction somewhere...
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Old 02-06-2015, 12:05 PM
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Mb place a thermometer stick into the rad cap hole, read it when car is up to temp. Prolly accurate to 5 degrees F, also
I don't bother with the bubble thing at purge, I just use it like a way to prime the heater core and let the overflow tank worry about extra. Works great.
Gl
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Old 03-27-2015, 01:14 PM
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I have same problem, but my car doesnt over heat. Just blows cold air when standing still. I've learned to deal with it.
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Old 03-27-2015, 01:42 PM
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Originally Posted by RedBullRR View Post
I have same problem, but my car doesnt over heat. Just blows cold air when standing still. I've learned to deal with it.
That usually means low coolant if it blows warm once rpm is increased
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