Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Cold snap issue

  • 30-12-2010 1:06am
    #1
    Registered Users, Registered Users 2 Posts: 5,706
    ✭✭✭


    Well good people of Motors looks like my faithful oul 2000 1.4 vvti corolla has come away from the cold spell with a bit of a problem. I will try to describe it as accurately as i can.

    - When i accelerate & the engine reaches 2000 rpm the car hesitates. A lumpy jerky affect occurs like the engine is temporarily starved of fuel or oxygen or something?

    - when the rev counter goes past 2100 rpm the hesitation disappears.

    - When the engine reaches normal operating temperature the problem is gone.

    - my battery died a few days ago. would this be connected with the problem?

    The car is still running but this hesitation has me concerned as i really don't have the money for a hefty repair job. Its also bloody annoying because 2000rpm is where you need good clean acceleration. The car has a modest 96k miles on it. Oil is fine, as is air filter. Any advice would be appreciated. Whats your diagnosis?

    Thanks.


Welcome!

It looks like you're new here. Sign in or register to get started.

Comments

  • Closed Accounts Posts: 2,412 andyseadog
    ✭✭✭


    what kind of mileage? when was it last serviced?


  • Registered Users, Registered Users 2 Posts: 5,706 fonecrusher1
    ✭✭✭


    andyseadog wrote: »
    what kind of mileage? when was it last serviced?

    96k miles. Oil & filter were changed about 10 months ago. Oil is at correct level & a decent colour.


  • Closed Accounts Posts: 2,412 andyseadog
    ✭✭✭


    96k miles. Oil & filter were changed about 10 months ago. Oil is at correct level & a decent colour.

    could simply be misfiring? when was the last time it had a fresh set of spark plugs? they would certainly do no harm.

    failing that you may have a dodgy coil pack.


  • Posts: 23,339 [Deleted User]
    ✭✭✭✭


    If this was only happening when cold and not exactly at the same revs all the time I'd reckon it was a blocked fuel filter.

    Edit, just saw it only happens when warming up, me thinks it would be worth changing the fuel filter. Worth doing anyway if it hasn't been done in a while.


  • Registered Users, Subscribers, Registered Users 2 Posts: 13,631 antodeco
    ✭✭✭✭


    Possible fuel timing issue. Definitely sounds fuel related, but no harm changing plugs anyway.


  • Advertisement
  • Registered Users, Registered Users 2 Posts: 5,706 fonecrusher1
    ✭✭✭


    RoverJames wrote: »
    If this was only happening when cold and not exactly at the same revs all the time I'd reckon it was a blocked fuel filter.

    Edit, just saw it only happens when warming up, me thinks it would be worth changing the fuel filter. Worth doing anyway if it hasn't been done in a while.
    antodeco wrote: »
    Possible fuel timing issue. Definitely sounds fuel related, but no harm changing plugs anyway.

    Just a bit more info. When i bought her 6 months ago i changed the sparkplugs. The exact same plugs with the same code & all. So it couldn't be that.

    Right so you think its fuel related. Ok the only thing i can DIY in that case is changing the fuel filter. If that doesn't solve it im off to my regular mechanic, he's a sound guy. hope to feck it isn't the fuel pump failing, that could be expensive.

    Thanks lads.


  • Registered Users, Registered Users 2 Posts: 5,706 fonecrusher1
    ✭✭✭


    Well lads following a look round the internet & a read through my corolla Haynes manual apparently the fuel filter in the 1.4 vvti should not need to be replaced...ever?! Its incorporated into the fuel tank.
    So i'l have to take it as a given that its not the fuel filter. So it could be the fuel pump.
    In the fuel pump-removal & refitting section of the Haynes manual it mentions a fuel pump screen & the possibility that it might need replacing. I take it this item is self explanatory? Its a little screen that filters an impurities that might pass through the pump into the injection system. Or is that not the fuel filters job?

    Im handy enough with servicing cars & light repairs but the idea of unbolting stuff from the fuel tank is a bit dodgy. Im NOT a mechanic. Should i investigate this myself or just bite the bullet & go to my mechanic?


  • Closed Accounts Posts: 246 colm1234
    ✭✭


    Well lads following a look round the internet & a read through my corolla Haynes manual apparently the fuel filter in the 1.4 vvti should not need to be replaced...ever?! Its incorporated into the fuel tank.
    So i'l have to take it as a given that its not the fuel filter. So it could be the fuel pump.
    In the fuel pump-removal & refitting section of the Haynes manual it mentions a fuel pump screen & the possibility that it might need replacing. I take it this item is self explanatory? Its a little screen that filters an impurities that might pass through the pump into the injection system. Or is that not the fuel filters job?

    Im handy enough with servicing cars & light repairs but the idea of unbolting stuff from the fuel tank is a bit dodgy. Im NOT a mechanic. Should i investigate this myself or just bite the bullet & go to my mechanic?
    sounds as if you have a dodgy lambda sensor buy a universal one for round 80 euro or could be dirty cat con sure get a diagnostics done only round 30 euro


  • Registered Users, Registered Users 2 Posts: 1,763 Muckie
    ✭✭✭


    If your unsure a friendly mechanic is in order. It could be possible

    the MAF sensor O2 sensor.

    Or even coil pack or crank sensor, the extreme cold seems

    to effect theses a lot. A diagnostic check should show up as sometimes

    some faults don't flash on the Check engine light. Good luck.


  • Registered Users, Registered Users 2 Posts: 5,706 fonecrusher1
    ✭✭✭


    colm1234 wrote: »
    sounds as if you have a dodgy lambda sensor buy a universal one for round 80 euro or could be dirty cat con sure get a diagnostics done only round 30 euro

    Yeah exactly if i could get just get a diagnostics report they'd be able to tell me exactly whats wrong. Surely its more that 30 euros for that?

    Remind me what a lambda sensor does??


  • Advertisement
  • Registered Users, Registered Users 2 Posts: 5,706 fonecrusher1
    ✭✭✭


    Muckie wrote: »
    If your unsure a friendly mechanic is in order. It could be possible

    the MAF sensor O2 sensor.

    Or even coil pack or crank sensor, the extreme cold seems

    to effect theses a lot. A diagnostic check should show up as sometimes

    some faults don't flash on the Check engine light. Good luck.

    Christ it could one of many things really.:confused:

    I think its time to get a diagnostics report. I could be guessing & replacing all sorts of things that have nothing to do with the problem.


  • Registered Users, Registered Users 2 Posts: 1,763 Muckie
    ✭✭✭


    :D Thats part of the "adventure" of modern motoring.

    Gone are the days of "Points and Plugs" given a clean and off she

    splutters into life.

    Ring an indy mechanic and describe the problem, plus get a price on a

    diagnostic and chances are he could have it all sorted in an hour.


  • Registered Users, Registered Users 2 Posts: 45 bumpynut


    2000 corolla is it defo vvti engine ? . If so check all the vacum pipes around throttle body and inlet manifold . Had 2002 avensis giving slight misfire . Very sim to your problem and it was vacum pipe broken coming from throttle body . If not could be one of the pencil coils breaking down

    Lets know how you get on


Welcome!

It looks like you're new here. Sign in or register to get started.
Advertisement