Loss of power once engine is warmed up

Tiny
W4RN3R
  • MEMBER
  • 2003 RENAULT MEGANE
  • 1.4L
  • 4 CYL
  • FWD
  • MANUAL
  • 68,000 MILES
Car starts and run ok until engine has warmed up, then I get major loss of power engine still runs but no revs when gas pedal is pressed down, I have to turn engine off, wait about 30 seconds then restart engine and car runs ok again for about 1 to 2 mins.

I have removed and cleaned the camshaft sensor and I have replaced the pre cat lambda(o2) sensor, should I also replace the post cat lambda sensor as well? Or the coil packs, its such a tricky problem to pin down and repair
Friday, June 13th, 2014 AT 10:21 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
To be honest, I'm not too familiar with this vehicle. We don't have them in N. America. However, some basic principals apply to all cars.

Have you had the computer scanned to determine if there are any trouble codes? Have you checked fuel pump pressure to make sure it is within the manufacturer's specs? Have you confirmed that the catalytic converter isn't plugging? As far as the O2 sensors, are you using a lot of fuel or seeing any black or white smoke from the exhaust?
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Friday, June 13th, 2014 AT 8:21 PM

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