Notices
370Z Maintenance & Repair 370Z upkeep and diagnosing/fixing problems

350z Overheating.

Thread Tools
 
Search this Thread
 
Old 01-20-2015, 08:25 PM
  #1  
alvear1311
Registered User
Thread Starter
 
alvear1311's Avatar
 
Join Date: Jan 2015
Location: brownsville,tx
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 01-20-2015, 11:03 PM
  #2  
bealljk
350Z-holic
iTrader: (13)
 
bealljk's Avatar
 
Join Date: Apr 2010
Location: North Denver
Posts: 6,358
Received 1,282 Likes on 1,007 Posts
Default

what is your temp guage reading when coolant is bubbling out of the easy spill funnel?
Old 01-20-2015, 11:07 PM
  #3  
alvear1311
Registered User
Thread Starter
 
alvear1311's Avatar
 
Join Date: Jan 2015
Location: brownsville,tx
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

its normal temp. but heater is blowing ice cold
Old 01-20-2015, 11:12 PM
  #4  
alvear1311
Registered User
Thread Starter
 
alvear1311's Avatar
 
Join Date: Jan 2015
Location: brownsville,tx
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

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.
Old 01-21-2015, 05:28 AM
  #5  
bealljk
350Z-holic
iTrader: (13)
 
bealljk's Avatar
 
Join Date: Apr 2010
Location: North Denver
Posts: 6,358
Received 1,282 Likes on 1,007 Posts
Default

swollen hoses and 230d would scare me...I would continue to bleed/purge/refill
Old 01-21-2015, 02:25 PM
  #6  
alvear1311
Registered User
Thread Starter
 
alvear1311's Avatar
 
Join Date: Jan 2015
Location: brownsville,tx
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

No its normal temp but with swollen hoses. Is that normal?
Old 01-21-2015, 02:25 PM
  #7  
alvear1311
Registered User
Thread Starter
 
alvear1311's Avatar
 
Join Date: Jan 2015
Location: brownsville,tx
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

My engine is kinda hot too. But it says normal temp
Old 02-06-2015, 08:51 AM
  #8  
Z33Garage
New Member
iTrader: (3)
 
Z33Garage's Avatar
 
Join Date: Jun 2011
Location: Orlando
Posts: 2,754
Received 26 Likes on 18 Posts
Default

Wow this is weird...almost like theres a restriction somewhere...
Old 02-06-2015, 11:05 AM
  #9  
jhc
General & Tech Moderator
MY350Z.COM
 
jhc's Avatar
 
Join Date: Jan 2013
Location: ZdayZ
Posts: 10,400
Received 2,225 Likes on 1,594 Posts
Default

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
Old 03-27-2015, 12:14 PM
  #10  
RedBullRR
New Member
iTrader: (7)
 
RedBullRR's Avatar
 
Join Date: Mar 2007
Location: New York
Posts: 3,215
Received 9 Likes on 9 Posts
Default

I have same problem, but my car doesnt over heat. Just blows cold air when standing still. I've learned to deal with it.
Old 03-27-2015, 12:42 PM
  #11  
iideadeyeii
New Member
iTrader: (6)
 
iideadeyeii's Avatar
 
Join Date: Nov 2011
Location: Lawtown
Posts: 3,871
Received 442 Likes on 358 Posts
Default

Originally Posted by RedBullRR
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
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
liqalu04
Engine & Drivetrain
31
01-02-2022 12:58 PM
Dsowe
Exterior & Interior
15
02-17-2021 10:38 AM
issyz
2003-2009 Nissan 350Z
6
07-02-2017 03:04 PM
nanotech
Exhaust
6
10-02-2015 05:02 AM
samansharif
Brakes & Suspension
1
09-25-2015 12:31 PM



Quick Reply: 350z Overheating.



All times are GMT -8. The time now is 12:16 AM.