Hi All,

I bought a secondhard '06 Satria Neo. It has a very strange overheating problem.

A few days ago I left it idling with AC running. I noticed engine heat was very high (near the 120C) mark. I turned off the AC and it returned to normal.
My wife then took the car out and the the engine overheated and shut down. Luckily she got it home quick. I check it and the main radiator hose had burst! I changed the hose, refilled radiator, etc.

Now have this strange problem. If the car is idling with AC on, engine temp starts going higher and higher till it reaches 120C. If I turn AC off, engine temp goes down. If I start driving, temp goes down.

I took it to proton shop for full maintenance; changed timing belt, flushed radiator, check everything. Told them about overheat. They checked the car and said couldn't find any overheating problem. I thought, great! Radiator flush much have fixed it. Nope. Same problem. Only with AC on, and idling, tenp goes up. Very very strange.
Oh yeah, also when the temp is high, I'm sure I can smell a whiff of engine coolant smell coming into the cabin....

Weird...i have 06 neo also but never encounter overheat problem. But the fan often continue to spin for 5 minutes after engine off if drive in hot sunny day

Have you check the fan behaviour when air cond on and air cond off when idling?

try to check the fan and temp switch see

AC on, temperature keep rising. few culprit. 1st, your radiator fan aint working on 'HIGH' mode, sometimes it run on 'LOW' mode or if u have 2 fan.. meaning the 2nd fan not working. or the fan is dying by running slow..
and another most shyt case is your ALTERNATOR is dying. when aircond on, it couldnt support enough current, hence radiator slow. THIS is the most shyt thing to happen... so.. i suggest.. first check the health of your alternator.. dangerous to leave it that way.. who knows when will it die and kill your electronics.

Satria Neo only have 1 fan, i think the fan spin in normal speed even when air cond is on. One question, if you drive at normal speed with air cond on the temp stay high or normal

This post has been edited by neo1point3: Mar 22 2013, 05:47 PM

i think TS need to check his radiator and see if the radiator itself have leak

waterpump? fan spinning normal? temp sensor?

My car also has the same problem.
Checked culprit is radiator fan spoil

maybe electrical problem causing fan to slow down when a.c.is running

read somewhere before when exora came out with campro..yep campro a bit hot during hot day or aggressive driving.

last time i had neo overheating problem too. But cant remember the exact symptom (whether when AC on only or doesnt matter). Found out radiator fan didnt turn on when hot. Just replaced the fan motor. Cost hundred plus for the motor and DIY install with my fren's help

most probably radiator fan..
while at it, u might want to changed thermostat as well..
unchanged thermostat will get jammed n cause overheat also..

An update. Took it to Proton shop. Mechanic removed thermostat completely, said wasn't needed and was getting jammed. Replaced the water pump.

Issue is better, but on hot day if I turn AC on, it still overheats.
Checked the fan, seems to work ok. I've had some weird electrical problem before, so will check alternator. Aside from that I'm getting some new fan relays. The fan doesn't seem to always turn on. Is there anything I can do about that? Will I need to replace the radiator as well?

When I'm driving normal speed with AC on all ok. When stuck in traffic on a hot day with AC on starts to overheat. I turn off AC and temp climb will stop. When I'm moving temp will go back down. Seems to be airflow but fan seems to be working.
Also, once overheat has started and recovered, turning AC back on will cause heat to climb again, unless I'm moving very fast.

removing the thermostat is not the cure. u will have slow warm-up time and the water will just flow freely, limiting its time to absorb heat from engine.
if u notice, the thermostat will have small opening when open-up, this will create some pressure before the thermostat. so the water have some time to collect heat from engine.

if want to remove thermostat, remove the center spring and disc leaving the outer disc only.
so u will have the outer disc and install back.

if have done this on my previous ride (turbo engine), result are better.

hope u understand. doesnt have my thermostat pic anymore.

if OFF AC, the fan should spin when temperature rises above normal temp, and stop after temp back to normal. the process goes on and on.

with AC ON, fan start spinning right away until AC achieve its temp set point, and stop, then back ON again when temp rises (its ON together with compressor).

looks like ur fan motor is getting weak.
the fan should produce very loud sound when spinning.
try compare ur fan sound with other proton car (preferably with same model or with single fan)

other thing to check if ur head gasket blown or not.

remove the radiator cap, start engine, let it idle until fully warm up.

if u noticed teh tarik bubble at radiator filling point, most probably head gasket blown.

or check dipstick if got water+oil contamination. usually creamy/choc colour.

maybe the head has been skimmed before..my friend got the same problem. change the head or use a thicker gasket head.

I got a similar symptom, but only when I drive hard like 160, or something, the aircond felt hot

what car?
maybe ecu cut off AC when running hi-speed / high rpm, to protect compressor?

Civic FD 2.0

Hi all, my Satria Neo 2006 also have engine overheat problem. Sorry I don't have a screenshot of the temperature. I was at the Causeway, engine idling, when suddenly the engine failure. The engine temp shot up to around 120 deg cel. There was also the red oil and battery icons on the display. I switch off the engine and restart the engine. I could travel a very short distance before engine failure again. Then I switch off the engine and waited a few minutes. The engine temp drop and I could drive normally again.

Does anyone have this similar problem? What could be the cause of the problem and the solutions?

Please help thanks a lot.

Rainer

these are cases that i experienced/heard regarding temp rise.

1. gen2 s4ph campro vanilla.
temp shoot up.
culprit, radiator spoilt.
solution, change radiator.

2. myvi k3ve.
temp shoot up
a. culprit, dislodged radiator/water hose.
solution, tighten hose.
b. culprit, almost no-flow in radiator, milo/teh tarik emulsion in radiator & sparetank.
solution, re-skimmed head.

An update. I've done a top overhaul on the engine, replaced the thermostat, replaced the radiator hoses with silicon hoses, replaced the radiator+engine pipe (manifold?). The only thing not replaced is the actual radiator, nor the fan.

The issue still remains. On a hot day, if I drive fast, I can keep the AC running, but if I stop at a light, temp will go very high and I need to turn the AC off, then temp goes to normal. On a cold day, everything is fine. The fan works.

I'm thinking of getting an oil cooler installed. The Proton workshop people can't figure out why it happens. Doing a top overhaul btw, really improved my fuel economy!

the cheapest troubleshoot, try sending the radiator for service. might be clogged.
or if u can get other 2nd hand cheap radiator replaced.
other than that, might be the fan motor weak already. try compare side by side with another car.

Is your cylinder head skim before?

Bro,

Any updates on your problem? I'm having same problem, here..i've done radiator service as well, but the problem is still there..

Weirdo case..

Anyone manage to get this issue fixed?

Check or replace

1.Thermostat
2.Waterpump
3.Radiator
4.Radiator Fan

You have done a lot, but why not the fan? Of the thing you explained, all pointed to 1 issue -> cooling/fan. Not moving, temp goes up. When moving, temp ok. You should also change workshop, I would've Fire them for asking me to do all that without solving the problem. How much have you paid?

I've experienced the same you like guys. Temp increases yesterday while I was idling at roadside waiting for my client to arrive. Off the engine and the fan still spinning strong. After an hour, check the water level. Water enough. Ignite the engine and drive until today still OK. Not sure what's the problem though. Mechanic checked radiator, hose, thermostat, fan and connector also no problem. Don't really understand what went wrong. First time like this. Sigh...

bro, problem over heat sudah settled?

Neo got how many cooling fan ? 1 or 2 ?

2nd car.

my friend (who's tok guru of car) told me to drive this car till "red line" rpm, pandu/lap kaw kaw. Release the water, and refill again..

it's some tips when he was using proton's 2nd car, his car used to have over heat issue.

This post has been edited by heavensea: Jun 24 2015, 08:18 PM

Neo is a single fan shroud.

overheat may include

-Clogged radiator
-Fan sudah kong
-Radiator sudah kong, and cannot dissipate heat any longer.
-Fan relay switch not working
-Water pump not working
-SKIM HEAD! (HUGE NO NO)
-Thermostat kong



I think that should be it...

This post has been edited by Post-Je-Ape-Ape: Jun 25 2015, 01:25 AM