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Thread: Toyota Corolla Gli not responding on petrol...

  1. #1
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    Default Toyota Corolla Gli not responding on petrol...

    I have a 2005 Corolla Gli. The car runs smoothly on CNG but when I convert the car to petrol the car suddenly starts to malfunction.. It does not take throttle as I press the full pedal but only responds to a lighter pedal and that too jerking... I have consulted a lot of mechanics and electricians and have the car scanned couple of times but they have not helped at all... Any body knows what the problem may be... Please guide me thoroughly...

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      bummmp

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      Bro will you explain your problem a little bit briefly that any Malfunction light appears or not in the instrument cluster.
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      ur cng advancer is out of order... the air intake sensor is sending the info to advancer but the advancer is not delivering it to the computer which makes ur EFI mad !!
      nomally airintake directly sends the air intake info directly to computer but for CNG,advancer in connected with the same cables betweens airintake n computer providing a bridge so that car runs fine on petrol but when u switch to CNG,it sends fake info to computer so that car works fine on CNG too jst like on petrol .... when this advancer becomes out of order due to some chuchla or any other reason it stops delivering the info to computer thus making it difficult for computer to decide how much fuel to inject for proper combustion !! same happened with me last year everything is perfect on cng coz computer is not used for fuel injection however on petrol airintake info to computer matters alot for proper combustion !!
      get ur car's advancer removed OR get a new one !! ur problem will b solved... n if im not wong the problem u r facing is that when u press ur gas paddle rpm goes till 3000 rpm only n start severe jerking above it ?? right ?

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      If the car has been runing continously on CNG since 2005 than i think your Fuel pump is not working get it checked,
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      my xli had this problem on petrol! valves were damaged due to constant running on cng

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      fuel pump
      emulator advancer problem
      blown valves
      can be any
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      Quote Originally Posted by bilal_masood91 View Post
      If the car has been runing continously on CNG since 2005 than i think your Fuel pump is not working get it checked,
      Yes bro the fuel pump was faulty... got it replaced and its working fine now...

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      Mine XLI has a bit diffrent prob, flawless on CNG, on petrol its not accelerating means if throttle is pressed fully car wil move and react like light foot on thrttle, runing in this situation on petrol for about 4-5 KMS the problm solved itself, once showed it to a CNG mechanic he advised me to clean all sensors,but i didn't. cuz mostly i use CNG. soo is it okay ?

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      corolla owners should drive their cars on petrol on short intervals inorder to kaap the things straight!

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      Doesn't it start every time on petrol which keeps all the parts involved in running condition?
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      Quote Originally Posted by autophile View Post
      Doesn't it start every time on petrol which keeps all the parts involved in running condition?
      Sir that is for a brief time. Running it daily for abt 3,4 km or allowing it idle on petrol for 5 minuted in the morning ll keep its petrol mech healthy n trouble free

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