Engine oil change - what can go wrong

[Beregond]

On 5/1/2024 at 5:28 PM, Mkl22 said:

I change my compressor recently and was due to the clutch being worn out. There was not separate part locally for just the clutch so no choice. But I kept the compressor and will source for the clutch overseas.  Aircon workshop L&Kim gladly let me take it back. 

Last time old car the  compressor alway can repair. 

Now i think those car maker smart. They dun design their compressor to be able to repair anymore.

Once spoil mean change whole pcs

[Comage]

On 5/1/2024 at 5:30 PM, Mkl22 said:

I will tell the mechanic off. And won’t go back. Such workshops to be avoided. All I ask is to be upfront. What for lie. 

I guess you're right... on the "won't go back" part. You're not the first guy to give me this advice as well.

On 5/1/2024 at 6:37 PM, Beregond said:

Last time old car the  compressor alway can repair. 

Now i think those car maker smart. They dun design their compressor to be able to repair anymore.

Once spoil mean change whole pcs

I believe there is a market for repairs of aircon compressors - but the quality of the refurbished part is very hit-and-miss due to the complexity of the aircon compressor itself.

For compressors, I will always get a brand new unit.

Other things like alternator and starter - one can go for refurbished units for such spare parts.

[Kklee]

On 5/2/2024 at 10:44 PM, Comage said:

I guess you're right... on the "won't go back" part. You're not the first guy to give me this advice as well.

I believe there is a market for repairs of aircon compressors - but the quality of the refurbished part is very hit-and-miss due to the complexity of the aircon compressor itself.

For compressors, I will always get a brand new unit.

Other things like alternator and starter - one can go for refurbished units for such spare parts.

IMHO.
Some AC compressors have repair parts. Also,  in the AC system, there are other parts that needs to be replaced on regular basis as well as when service e.g. receiver-drier.
So far,  not many if not none do that. 

[Kklee]

On 5/12/2024 at 7:16 PM, metalstream said:

The workshop returned me the old part when I changed to a recond alternator. By right, workshop should return you the old part. 

IMHO.
I asked for a battery and spark plugs to be returned to me.  Now I am stuck with the battery. 🤣

[Kklee]

On 5/12/2024 at 8:22 PM, metalstream said:

@Kklee, the used battery can be sold at recycling shops for about $10 each, depending on the weight 

IMHO.
Got any contacts?

[Kklee]

On 5/12/2024 at 8:23 PM, metalstream said:

Air con compressor oil needs to be replaced at regular intervals too, although many seem to ignore this 

IMHO.
AC a lot of factors. Just that some workshops still using traditional methods for service. 

[Mkl22]

On 5/12/2024 at 7:23 PM, Kklee said:

IMHO.
Some AC compressors have repair parts. Also,  in the AC system, there are other parts that needs to be replaced on regular basis as well as when service e.g. receiver-drier.
So far,  not many if not none do that. 

I will not reuse any ac part. Nothing worth servicing. To be honest if not cold means leak or compressor clutch. 
simple stuff like relays and switches are separate. Aircon nothing to service other than diy filter. 
I don’t buy into the nonsense of changing aircon gas and oil. Does nothing. 
compressor. If it leaks it’s a massive rebuild and non of the alibaba shops in sg is competent. Rather buy new with warranty.

condensor or evaporator leak. How to repair. Solder weld sure. If cannot must take out put back… forget it.

receiver drier. Most are now together with the condenser so changed as a unit.  can change desiccant.  

[Mkl22]

On 5/12/2024 at 8:23 PM, metalstream said:

Air con compressor oil needs to be replaced at regular intervals too, although many seem to ignore this 

No need to replace oil. Which alibaba mechanic tell you. Those with the machines just wanna con you into doing it. 

[Gnahp]

On 5/12/2024 at 9:13 PM, Mkl22 said:

No need to replace oil. Which alibaba mechanic tell you. Those with the machines just wanna con you into doing it. 

I belong to the "no need to replace compressor oil" camp

W204 - 280k km, aircon no problem

Hyundai Getz - 270k km, aircon no problem

other cars not owned long enough, not worth mentioning

[Comage]

On 5/12/2024 at 9:12 PM, Mkl22 said:

I will not reuse any ac part. Nothing worth servicing. To be honest if not cold means leak or compressor clutch. 
simple stuff like relays and switches are separate. Aircon nothing to service other than diy filter. 
I don’t buy into the nonsense of changing aircon gas and oil. Does nothing. 
compressor. If it leaks it’s a massive rebuild and non of the alibaba shops in sg is competent. Rather buy new with warranty.

condensor or evaporator leak. How to repair. Solder weld sure. If cannot must take out put back… forget it.

receiver drier. Most are now together with the condenser so changed as a unit.  can change desiccant.  

This I agree. There seems to be a lack of competent workshops here in Singapore that can rebuild ac compressors. 

My workshop said they used to sell customers these since they were cheaper - but the return rate was so high that they give up. 

So they only sell brand-new ones since years ago. 

[Kklee]

On 5/14/2024 at 10:43 AM, Comage said:

This I agree. There seems to be a lack of competent workshops here in Singapore that can rebuild ac compressors. 

My workshop said they used to sell customers these since they were cheaper - but the return rate was so high that they give up. 

So they only sell brand-new ones since years ago. 

IMHO.
I think maybe also could be due to unavailability of certain parts too. 

[Comage]

On 5/12/2024 at 9:12 PM, Mkl22 said:

I will not reuse any ac part. Nothing worth servicing. To be honest if not cold means leak or compressor clutch. 
simple stuff like relays and switches are separate. Aircon nothing to service other than diy filter. 
I don’t buy into the nonsense of changing aircon gas and oil. Does nothing. 
compressor. If it leaks it’s a massive rebuild and non of the alibaba shops in sg is competent. Rather buy new with warranty.

condensor or evaporator leak. How to repair. Solder weld sure. If cannot must take out put back… forget it.

receiver drier. Most are now together with the condenser so changed as a unit.  can change desiccant.  

Side track back again here... I have had the misfortune of a pulley/clutch (connected to the main engine?) on my vehicle go bad recently. 

Tried asking around the workshops, and sending them pictures of the bad pulley/clutch, but none of them were willing to take on the job.

Then I tried to reach out to clutch assembly companies, asking if they sold a spare part like that, but none of them sells parts to individual end-consumers, and told me to go fly kite. 

Really a bad suck thumb situation. 

[boonhat_91]

sorry hijack this thread also.. managed to capture the fault codes for my CEL - P0290 and P0014.

What are the chances that it is a timing chain issue, given current mileage 89k?

WOT story hidden:

Spoiler

The CEL first appeared on 13/5. Workshop A cleared the fault codes (I did not see what the codes were). Since then continued driving and no CEL, until 20/5 it came back. At workshop B, again I did not see what the codes were but the mechanic mentioned something about timing advanced. He suggested to replace the oil control valve (aka VVT solenoid). Did not clear the codes this time, and I drove home with the CEL still on. On 21/5 morning, I found my oil level a bit below min on the dipstick. The oil was just changed in early March, and after a few weeks of regularly checking and not seeing any noticeable drop in oil level I had become lax. I suddenly thought to check since oil level may or may not affect OCV. Funny enough, on this 21/5 morning when I started the car to drive to work, the CEL did not come on. For the rest of the day, still no CEL! In the evening I went to workshop C to top up engine oil. On 22/5, my wife used the car and according to her, only on her way home then the CEL came back. 23/5, I started the car in the morning and CEL remains. I brought it to workshop D where I took the attached photo of the codes.

[Mkl22]

On 5/24/2024 at 12:09 PM, Comage said:

Side track back again here... I have had the misfortune of a pulley/clutch (connected to the main engine?) on my vehicle go bad recently. 

Tried asking around the workshops, and sending them pictures of the bad pulley/clutch, but none of them were willing to take on the job.

Then I tried to reach out to clutch assembly companies, asking if they sold a spare part like that, but none of them sells parts to individual end-consumers, and told me to go fly kite. 

Really a bad suck thumb situation. 

Compressor clutch? Just go online and buy lor. Your vehicle make and model should have the break down of the exact part number. 
if it’s a engine pulley then go stockist. Never had an issue. 
not sure why you want to go to clutch assembly companies. 

[t0y0ta]

On 5/24/2024 at 1:42 PM, Mkl22 said:

Compressor clutch? Just go online and buy lor. Your vehicle make and model should have the break down of the exact part number. 
if it’s a engine pulley then go stockist. Never had an issue. 
not sure why you want to go to clutch assembly companies. 

Go stockist - give them your car VIN, then can indent the exact correct part for his car.

Sure can find some workshop to replace. These are common issues

Unless his is some weird car like SangYoong

[Comage]

On 5/24/2024 at 1:42 PM, Mkl22 said:

Compressor clutch? Just go online and buy lor. Your vehicle make and model should have the break down of the exact part number. 
if it’s a engine pulley then go stockist. Never had an issue. 
not sure why you want to go to clutch assembly companies. 

The ones online are all Chinese-made... It's the clutch that has gone bad and is wobbling upon engine starting up. 

On 5/24/2024 at 1:48 PM, t0y0ta said:

Go stockist - give them your car VIN, then can indent the exact correct part for his car.

Sure can find some workshop to replace. These are common issues

Unless his is some weird car like SangYoong

Stockist told me EOL - not in production anymore. 

[Gnahp]

On 5/24/2024 at 12:54 PM, boonhat_91 said:

sorry hijack this thread also.. managed to capture the fault codes for my CEL - P0290 and P0014.

What are the chances that it is a timing chain issue, given current mileage 89k?

WOT story hidden:

  Reveal hidden contents

The CEL first appeared on 13/5. Workshop A cleared the fault codes (I did not see what the codes were). Since then continued driving and no CEL, until 20/5 it came back. At workshop B, again I did not see what the codes were but the mechanic mentioned something about timing advanced. He suggested to replace the oil control valve (aka VVT solenoid). Did not clear the codes this time, and I drove home with the CEL still on. On 21/5 morning, I found my oil level a bit below min on the dipstick. The oil was just changed in early March, and after a few weeks of regularly checking and not seeing any noticeable drop in oil level I had become lax. I suddenly thought to check since oil level may or may not affect OCV. Funny enough, on this 21/5 morning when I started the car to drive to work, the CEL did not come on. For the rest of the day, still no CEL! In the evening I went to workshop C to top up engine oil. On 22/5, my wife used the car and according to her, only on her way home then the CEL came back. 23/5, I started the car in the morning and CEL remains. I brought it to workshop D where I took the attached photo of the codes.

shooting in the dark, can be anything that cause the camshaft out of timing

offhand I can think:-

camshaft position sensor(s) and wiring

camshaft timing actuators i.e. VVT sprockets, valves

stretched cam chain/timing chain

cam chain/ timing chain tensioner and those plastic sliders

oil pressure

 

[t0y0ta]

On 5/24/2024 at 2:28 PM, Comage said:

The ones online are all Chinese-made... It's the clutch that has gone bad and is wobbling upon engine starting up. 

Stockist told me EOL - not in production anymore. 

Means some obscure or double COE-renewed car. Noticed you don't wanna share your car make/model

Then LLST live with it or scrap