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1999 Mirage VRX - crappy cold start/idle/performance/fuel economy - Hardtuned.net

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1999 Mirage VRX - crappy cold start/idle/performance/fuel economy 

1 reply to this topic

#1 junkie

  • Joined:14-July 04
  • Location:Australia NSW
  • Car:S14a

Posted 16 January 2012 - 02:46 PM


Need some help, this thing is doing my head in

Its my wifes Mirage, been trying to fix the problem for a couple of months now

Basically, if I let it sit overnight and start it in the morning, it runs on two then three cylinders for a minute or so, with the odd stall, then clears up and starts idling fine. When its warm, no problems at all. Its also gutless during normal driving, like driving with the handbrake up and fuel economy is pretty crappy, about 300-350 kays per tank

So far I have done the following:

New plugs
New leads
Clean dizzy contacts and rotor button
Clean throttle body and intake manifold (twice) - this fixes the problem for a few days, but it comes back
New air filter
New fuel filter

Could it be a busted oxy sensor causing the plugs to foul up? I'll pull them out this weekend and see what they look like.

Engine itself is in good nick, serviced every 6 months with fresh oil and filter and the car has done 135,000km


#2 Your Strange

  • Joined:03-January 06
  • Location:Australia SA
  • Car:Evo 6.5

Posted 21 January 2012 - 04:54 PM

check the vacuum lines, there is a shitty one under the intake manifold which is hard to tell if its split. buy and length of it and just change them all, cost you $10 and may fix your problem

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