Gli 1.3L auto loosing power once reaching operating temperature

[engnr.mubashir]

I have 2015 gli automatic car runs fine until operating temperature after that starts to loosing power car get worse I stuck in to traffic for long than 10 minutes. This thing is also causing bad fuel average to it’s not even giving me more than 7km/L hardly gets 8 km/L with AC as I have installed clutch based compressor of old 2005 model Corolla.
What could be possible cause of this thing as engine is not overheating have check temp with OBD device and radiator runs fine.
Fuel pump is not bad as I have replaced 4 times results were same even change electronic accelerator peddle no success so far.
No good mechanics in my vicinity all crack head mechanic are saying same things throttle body saaf karwa lo plug change karwa lo which I have already done my self.
Anyone know who can diagnose this issue here in karachi I don’t want to visit those mechanic saying Yeh change karlo woh change karlo etc.
would love to take suggestions from experienced and those had issue in the past.

And If you are just here to comment itna hi auto 1.3 ka average then bro you do not suppose to comment on this thread because you have zero Idea.

[hash4u]

Anyone know who can diagnose this issue here in karachi

@capsat

[aziz.rehan]

Does rpm drop when u turn ac on

[engnr.mubashir]

No.

[Xulfiqar]

Are you also hearing spark knock?

[haseeb.basharat]

How much driven?
When did you clean it's catalytic converter?
Clutch compressor doesn't drop fuel average more then 0.5km/l I have also installed it in my 2016 1.8cvti.

[Xulfiqar]

Why did you downgrade the ac compressor?

And cat converter never needs cleaning, a few loaded redline pulls will clean it. A blocked/melted cat cannot be saved.

[dms664]

clean

Exactly sir
Its been years that I am following your this advice and never needed to clean cat or throttle.
Adrenaline induced redliners in city and long trips on motorway compliant with Italian tuneup.

[engnr.mubashir]

No Sir there is no knock as I have checked it with concentration by rolling up all windows and AC was turned off to hear the knock but there wasn’t any.
I bought the car used and was at 85000kms old owner told me compressor got seized for unknown reason then he swapped with clutch compressor.
I simply couldn’t afford the whole system replacement which provisionally for PKR 96000 at that time.
Cat was cleaned by old owner with the acid thing.
There is a new twist to this issue:
Last night one thing I notice when took my car for ride the when I was pressing accelerator pedal 25 to 30% I noticed power drops and then I closely looked on RPM that pressing accelerator pedal making RPM to drop to little bit and when I slightly release the pedal and RPM started to climb again that was happening continuously for a time with pedal pressing to some extent and some time this things wasn’t happening at all.

[arslan.v8]

My last car was a pristine manual Corolla, with lesser miles than yours. It behaved exactly like this, turned out it was the downgraded ac compressor that was acting up. I later ended up having to change almost everything powertrain related to bring the car to factory spec. Owners here just don't care when it comes to parts replacement, their first choice is to repair the failed part, if not they would go with the cheapest second hand alternate part as long as it works.

Try running your car without the ac and see if the problem persists. If it does, it's either your trans, or bad plugs/clogged injectors.

PS. You don't need to change fuel pumps that often, buy a brand new OEM.

[dms664]

Try running your car without the ac and see if the problem persists.

I was about to suggest the same. To rule out AC, try running car without AC and report back.

[engnr.mubashir]

I will try to drive it without AC will let you know here.
Secondly never got anything repaired always replaced things on priority.
Injectors are good not leaking or chocked hot the flow tested at Launch injectors bench.
Fuel pump were changes because of starting issue and pressure was dropping after while.
BTW no one sells OEM brand new everyone in the market is selling china copy or best Chinese copy ones in the market as original is expensive.

[haseeb.basharat]

Why did you downgrade the ac compressor?

And cat converter never needs cleaning, a few loaded redline pulls will clean it. A blocked/melted cat cannot be saved.

Old one ceased and never worked again, and I was unable to get a new sensor type in one day. Had to wait for a month for its import. Fitted clutch type for a while, but it works completely fine so I kept using a way more robust thing.

Yes, catcon doesn't clogs if the fuel is fine, the fuel quality at company operated sites is fine, but it goes real bad at some fuel stations. I have faced clogged catcon once (not melted), my car was unable to go above 100km/h and 0-100 was like a decade. Cleaned it myself with liqui moly catalytic system cleaner dripped from throttle. Everything is fine after that.

[haseeb.basharat]

BTW no one sells OEM brand new everyone in the market is selling china copy or best Chinese copy ones in the market as original is expensive

You are wrong.

I get everything oem from this guy, if its not available he can import for you.

https://www.facebook.com/PartsCentralPK/

[Xulfiqar]

To confirm the converter actually is plugged, you need to test the pressure in the exhaust before the converter, if you are getting more than 1 psi there, you have a blockage.

If its less than 1 psi even on sudden revving then your exhaust isnt blocked, your problem lies elsewhere.

Its a proper controlled test that shows actual real data rather than andaaza and “ghutti ghutti chalrahi hai”

Btw you dont need to import a corolla compressor, thal engineering have it in stock almost all the time for a very reasonable amount.

Using an old clutched style compressor on a system that is monitored with a pressure transducer and an evap temp sensor is not a good idea. The old style systems used an analog dual pressure switch and an evap thermistor cutoff.

[engnr.mubashir]

@Xulfiqar Sir your thoughts on this issue ?

[haseeb.basharat]

monitored with a pressure transducer and an evap temp sensor is not a good idea. The old style systems used an analog dual pressure switch and an evap thermistor cutoff.

Both are working even the temperature can be controlled . The compressor I fitted was bolt on but clutch type of terios 1.5L.

[haseeb.basharat]

Btw you dont need to import a corolla compressor, thal engineering have it in stock almost all the time for a very reasonable amount

I'll contact them. Oem is oem

[haseeb.basharat]

To confirm the converter actually is plugged, you need to test the pressure in the exhaust before the converter, if you are getting more than 1 psi there, you have a blockage.

If its less than 1 psi even on sudden revving then your exhaust isnt blocked, your problem lies elsewhere.

Sudden revving at idle was giving mangnese orange smoke. When I poured LM cat cleaner there was huge amount of gunk. Drove car at high revs for next 30kms and Alhamdullilah it worked for me.

[Xulfiqar]

I dont think you actually understood what I wrote..

For you, thandi masheen chalrahee hai!!