Nissan Primera P11 GT Overheating Issues |
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P93GBW
NPOC Guest Joined: 19 Aug 2012 Online Status: Points: 78 |
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Posted: 12 Jun 2021 at 10:47am |
Hi, having some odd issues with my GT Overheating. On a long run on the motorway, cruising at 70,when going uphill occasionally the temp will start climbing and probably overheat if I don't let off the accelerator and cruise up the hill. After that it will keep climbing for the rest of the journey, if I put the heaters on in the car though it keeps the needle horizontal.
Water pumps been changed, new thermostat, fresh coolant. Engine oils fresh. Bled it several times since issues started to make sure it wasn't an airlock. Top and bottom rad hoses are hot. If left on the drive running fans will kick on after about 30 mins run a few minutes and turn off and the temp stays stable. Even once up to temp taking it out afterwards and even when trying I couldn't get it to overheat! It's fine for a couple of weeks driving local even when driving fast country roads but then a motorway trip maybe 10 miles and it acts up. Any clues guys? Don't want to go down the road of replacing bits blindly but only thing I can think is new radiator or head gasket but neither fully add up as no other symptoms. Cheers |
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essNchill
Admin Group Nissyen Gaius Fluff Joined: 05 Feb 2003 Location: Hampshire Online Status: Points: 62606 |
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Has it actually overheated as yet? Meaning engine steaming and all of that..
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CarSpyTV
NPOC Member Joined: 07 Sep 2019 Online Status: Points: 191 |
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I appreciate there are no obvious head gasket symptoms, but might it be worth double checking with a combustion leak tester (if you haven't already)?
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CarSpyTV. Join the fun at YouTube. Buying, driving, maintaining, and selling cars - because it's interesting!
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Robc123
NPOC Guest Joined: 09 Sep 2017 Location: Essex Online Status: Points: 20 |
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Temp OK with the heater on full but overheating with it shut off can be a sign of a radiator problem.
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Janner
NPOC Guest Kerbalicious Joined: 15 Jul 2007 Location: Cornwall Online Status: Points: 8492 |
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I'd say the radiator is on its way out by the sounds of it but I'm no expert.
Good luck. |
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P93GBW
NPOC Guest Joined: 19 Aug 2012 Online Status: Points: 78 |
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Hey guys. Sorry for being terrible at replying. Decided to throw stuff at it and see what sticks. With doing the wrench work myself cost wasn't too bad.
So it's had head gasket, timing chain and a new rad fitted. All seemed well until tonight, it's been on several hour to 2 hour runs at high speed and sat in traffic too. Tonight a tootle down to the local asda had it overheating again, boiling coolant spewing out the rad cap and generally not happy. That's on a half hour steady drive! Feeling pretty down and really just not sure what to do next! |
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Dad's Taxi
NPOC Elite Member Joined: 04 Jul 2012 Location: Wakefield Online Status: Points: 1701 |
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My first thoughts would be Rad not flowing, or Pump not pumping. But if you replaced both and are sure pump was fitted right (Not doubting your spanner skills) i'm a bit at a loss.
Could belt driving the pump be slipping, thus not pumping? Thermostat in back to front? (Done that one myself)
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P11 GT DR2 My daily
P11 SLX Daughters *** (in sparkle Blue) Secret new toy..... 100NX 1.6 Auto in red |
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P93GBW
NPOC Guest Joined: 19 Aug 2012 Online Status: Points: 78 |
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I fitted the pump and stat first, took the pump out again when I did the timing belt to have a nosy and all looks fine, bearing on its still solid and belt was replaced too and is the right amount of tight.
Pokey bit of the thermostat goes into the engine side right |
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P93GBW
NPOC Guest Joined: 19 Aug 2012 Online Status: Points: 78 |
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Appreciate you weighing in though mate and I will be taking it apart again to check.
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Dad's Taxi
NPOC Elite Member Joined: 04 Jul 2012 Location: Wakefield Online Status: Points: 1701 |
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Had a bit of a heating issue with the wife's Almera last year, replaced Thermostat and must have been a dodgy one as it didn't solve it, Removed it and ran without one for a few weeks and solved if not reversed the problem. Ran too cool on Motorways then lol
And yeah, Longer bit Inwards towards housing/engine. Should be a bleed nipple right behind it on housing too. Did you check the Opening temp of the stat? Most have three or more temps in the range. (Like 72-79-86 degrees)
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P11 GT DR2 My daily
P11 SLX Daughters *** (in sparkle Blue) Secret new toy..... 100NX 1.6 Auto in red |
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