Weird Honda City 2013 RPM Drop Issue

pwuser164818480359 (Mohsin Ali) 2023-09-19 11:51:20 +0500 #1

Hi, I have Honda city 2013 which is showing weird RPM drop issue with AC

Without AC the car works fine, but when I turn on the AC and try to change gear, as soon as I press clutch and let go the accelerator the RPM drops very quickly to 500RPM and then jumps back up to 800RPM which is default (Without AC it drops very smoothly). I reset the computer once by disconnecting the battery wires and the issue disappeared for few days but reappeared again.

I have car audio system installed so I upgraded to Big-3 with 2g ofc wire, this upgrade made things better for car (acceleration and light dimming) but didn't fix the RPM drop issue.

Ofc the mechanic is clueless.

Please help

pwuser164852071570 (Saqib) 2023-09-19 12:42:48 +0500 #2

i think it's normal... RPM down whenever you press the clutch. and go up on releasing the clutch. In my Honda City 2017 same happening.... There is no issue at all.

imran747 (imran747) 2023-09-19 19:46:52 +0500 #3

I was facing same issue so much so that car started vibrating due to low rpm when clutch was pressed. Did tuning including throttle body service now its fine and rpm is settling at 800-850 range with ac momentary jump then back to 800-850

uzair3337 (M Uzair Masood) 2023-09-19 20:29:57 +0500 #4

Same issue honda city 2014 1.3 manual.No solution till now

waleed96 (waleed96) 2023-09-19 20:47:43 +0500 #5

Facing the same issue. Tuning didn't help. Spent 15k on new spark plugs, that didn't help either.

askai37 (askai37) 2023-09-19 22:06:57 +0500 #6

did they clean intake manifold with petrol and water in tunning process.

pwuser164818480359 (Mohsin Ali) 2023-09-20 12:36:01 +0500 #7

I have searched for this issue and seems like lot of Honda owners (Civic & City) are facing the same issue, some solutions I find include

Cleaning Throttle Body
Cleaning/Replacing IACV
Cleaning/Replacing MAF Sensor
Faulty Oxygen Sensor
Chocked Catalytic Converter

I will try above solutions and report back if the issue is resolved.

pwuser165176643628 (Ali kiyani) 2023-09-21 13:20:35 +0500 #8

Facing same issue in Corolla 2010, but this happens when ac is off. Also I think it is the fuel pump as I have done everything to despair. You guys can try it as our models are almost same and the issue we are facing is exactly the same even though tuning has been done multiple time s

askai37 (askai37) 2023-09-21 18:46:19 +0500 #9

bro if yur problem resolved of toyota corolla 2010 after fuel pump. let me update. PM bhi kardena plz

pwuser165176643628 (Ali kiyani) 2023-09-21 20:46:00 +0500 #10

Bro I'm 90% sure as my car started this issue after kabli pump was used in it. Please use original denso pump from dealership if you plan on changing. But please do have it checked by an expert

askai37 (askai37) 2023-09-21 21:05:01 +0500 #11

when u change it will original.let us know price as well