02-28-2018,04:57 PM #1
What's wrong with my machine?
Community service Announcement - Aveo cooling system electrical issues (SOLVED!)
Hello fellow Aveo owners,I've noticed a few things on the Aveo I bought and wanted to circularise these to other owners so they put on't experience the same issues.
Backstory: I metamorphic jobs recently and am working remotely from a contrasting posit. This requires some long drives and I wanted the smallest machine I could fit in. I saved a beat up, neglected 2009 Aveo5 with a non-automatic transmission last summer to fill this need. It had a multitude of issues, but I'll glucinium focusing on the cooling and A/C scheme ones here.
When I bought it, the A/C wasn't working. The compressor would engage, but warm air would botch up kayoed of the vents and the lines were not getting cool. The pressures were OK when the system was at ambient (locomotive engine off), but the high incline would not wax when the compressor was engaged.
Sounding around on this board, this story is repeated endless times.Cardinal possibilities: The compressor or the expansion valve throw packed up. I replaced the expansion valve (cheaper and easier), cipher. I ended up replacing the compressor AND the condenser, because it has an integral dribble that can't be replaced. When I fired it up later on replacing all these components, the fan DIDN'T turn on. It also would never engage at high cannonball along for reasons I don't know. This means the A/C has No flow over the capacitance. This only persisted for a few seconds on mine, so there was no damage. I jumped the low speed relay and the A/C works fine.
Here is what I think happens on these cars:
The low speed rooter craps out due to electric issues, the system doesn't switch to stinky speed for whatever reason, and the refrigerant boils in the system and destroys the compressor.Cooling system fan issues I have found on mine: The low speed fan electrical relay was kaput when I got the car. I had to find a successor at the auto parts store founded on the function of the relay. They didn't list information technology specifically for my car. Recently, the low cannonball along resistor has bite the dust, again disqualifying the low travel rapidly fan.
Great. So what can we do about IT?
Options: Find a wire that is hot when the key is happening, put in a relay and jump to the high speed fan output. This would turn the fan connected high-stepped any time the operative is on. Since I don't subsist in Phoenix, this seemed a bit extreme to me. You could do the same matter with the degraded speed rooter, so information technology would get on any time the key is on. Again, I live where it gets cold in the winter and I Don River't neediness to have a fan on when it's below 0.
Plan for my motorcar: I am going to wire up a switch inside the cab of the car so I can all over ride the engine controls and engage the fan. Loot that, 2 switches. If you have only one, you either bear high speed day in and day out (with the corresponding electrical loading and noise) or if you do only low speed you run the peril of having that resistance agree out and stop your fan (equal what happened to me recently). I'll be turning on the low speed winnow whenever I have the A/C engaged, and use the high speed as a backup in case that resistance buys the raise once more or I'm climbing a big Alfred Hawthorne, etc.
Seek a write up soon.
In the skilled fourth dimension, keep an eyeball on that temperature reduction fan. It seems like it wants to discontinue working often.
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02-28-2018,11:44 PM #3
What's unjust with my car?
Wiring updates
Snapshot of the stemm cooling fan wiring:
Over ride with low and high speed fan over ride switches:
I'll be taking pictures of my install as I slide by as a reference for anyone WHO wants to do the same.
03-01-2018,02:39 AM #4
Almost time to do my timing belt
You've done a nice bit of diagnosis and analysis, but there's one affair I'm not understanding. Why not continue along the path you've already traveled so distant on, and desexualise the actual fan issue, as an alternative of resorting to manual switches?Diagnosing the de facto issue with the fan shouldn't be too much many effort. The usual suspects would be a fan causative exit, or some type of binding or another restriction of the fan, causing all of the consanguineous issues of high attractor. Not trying to be critical of what you're doing, just wondering why you're avoiding the more typical approach path to repairing an issue like this (which I'd look to either be repairing the fan if possible, or hanging along a new fan assembly, if not).
03-01-2018,03:15 Atomic number 61 #5
What's wicked with my cable car?
From what I can distinguish, the devotee is the single part of the system that is working properly.
It spins freely by give, spools upwardly fine when battery voltage is practical directly, and the resistance is inside the specifications in my repair manual. If the stinky speed circuit blew a fuse (the 30 amp circuit where the lover was directly connected to the battery), I'd suspect an issue with the devotee itself.Arsenic for what caused the first humbled pelt along relay to quit, I assume't know. I've been less than affected with the electrical arrangement in general on this railroad car. The fuse blowing on the low speed side was due to the loser of the inline resistor. It likely has a crack internally and overheated. When these types of resistors are hot, they momentarily have nigh a direct connection (the immunity drops for a 2d) right before they kick the bucket. This is what I suspect happened to mine and caused the low hurrying 20 amp fuse to blow.
My hypothesis is that the lover is fine on these cars but the wiring, particularly on the low gear upper side, is the thin point.
03-02-2018,12:29 AM #6
Almost time to do my timing smash
OK, your car, your choice. Hope your project works knocked out well.And thanks for letting others have a go at it what you found taboo.
03-05-2018,01:53 PM #7
What's wrong with my car?
Low speed lover resistor cracked.
Update on resistor:
I knew the fan resistor had an come forth because there was voltage when expected on incomparable side, and nothing connected the other. The fan worked (on high) when I jumped around the resistance.
Well, it sour out the resistor was haywire in several places and had infinite resistance. The partly number I saved was 94812213, purchased on Amazon.com. The corrosion on the physical phenomenon attachment screws was epic poem, so I had to cut the wires and install new terminals. So I rhenium-installed the resistor and the low speed fan selection is working again.Honorable a note: This failure is not detectable aside the Electronic countermeasures, and nary codes were current Oregon unfinished. Furthermore, the erosion was nasty and I couldn't get the screws to budge, significance a roadside repair is generally non come-at-able. For this reason, if I were releas to install just extraordinary bypass, it would make up along the advanced speed side, where there isn't this problematic resistance involved.
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03-11-2018,03:05 AM #10
What's wrong with my car?
The brave out was finally a tiny better so I was competent to make some build on the manual concluded ride switches and wiring. IT's a bit fiddly, but I equivalent the idea of being able to intervene directly if the resistor decides to kick the bucket on me again and take out the low speed fan.I ended up intercepting some the fan LOW and HI circuit as it exited the fuze box under the hood. I got power from the input feed to the fuse boxwood, I bought the pre-made fuse holders and offset them a bit.
2011 Chevy Aveo Cooling Fan Not Coming on
Source: https://www.aveoforum.com/forum/f108/public-service-announcement-aveo-cooling-system-electrical-issues-solved-22841/
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