Hyundai coupe 2000, poor acceleration when AC on?

Question

Hello Guys! I need a professional mechanic’s help! I own a Hyundai coupe 2000 model! Sometimes when driving the car acts up & shows poor acceleration, struggling for power when trying to accelerate! RPM speedometer is stuck at a slightly higher level & returns slowly to normal level only when the car is at full stop & at idle position; the above problem gets really worse when AC is turned on! The car is completely irresponsive & severely struggles for power. PLEASE HELP!

Answer 1

2 tell u tha truth alot of hyundai coupes have no balls(have no power, acceleration)... but its ok coz it has good air con... :D

Answer 2

I would suggest you have an air leak in the vacuum system.



a clogged AIV (air induction valve) will cause this leak internally and so will a stuck open PCVV(positive crankcase ventilation valve)



First thing go over all your rubber hoses and make sure they are tight and no cracks or breaks.



The AIV is usually near the throttle chamber (it will have an electrical connector) . Take it off and you will see it is a motor driven valve. the valve gets clogged open often and wont operate correctly. clean it out with starting fluid and an old tooth brush.



The PCVV is cheap .........just replace it



Another Possibility is a clogged open EGR (exhaust gas recirculation ) valve.

It can be cleaned usually the same way



a $20 book will help you greatly to identify these components,their location, and how they work.



I've even seen a clogged air filter cause the same symptoms you describe



What I'm saying basically, is you have an air leak in the engines vacuum somewhere

Answer 3

Its a common problem in cars with small engines. AC runs off the engine which leaves less power for driving. Your mileage will also drop with the AC on for the same reason.

Answer 4

Hyundai are generally crap. I got one and the designs are unoriginal and every time i replace a light another one fails. and the interior is tacky adn stuff fall out and you gotta hit it hard to get it working. And its a 98 Lantra!