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1999 1.6 Avensis Problem...


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#1 johnny c

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Posted 12 March 2012 - 04:25 PM

hello all.

ive recently bought myself a 1999 1.6 4afe avensis as a run around.

1st porblem ive found with it(other than someone used the interior as an ashtray!) is that when the engine warms up,it wont rev past 4500rpm.
the car can rev quite lumpy through the rev range also.

so i took it upon myself to do a diagnostic check,which gave me a following faults.

14
31
33
41.


can anyone shed any light on this for me?
thanks very much.

johnny

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#2 Gooli

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Posted 12 March 2012 - 06:02 PM

You may get some leads on this page:
http://www.extreme-c...BD1 Decoder.htm

#3 Alan Morgan

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Posted 14 March 2012 - 10:58 AM

Did you re-set the diagnostics after reading them? Old codes will be stored until it is re-set and that is quite a range of codes. Personally I would disconnect the battery for around 5 mins, run the car for a day or so and then re-read. You could be chasing old codes and fixing problems that are no longer there. If I don't know the history of a car I always read and record any fault codes and then re-set, run the car again and re-read the codes just to make sure I'm not looking into faults that have already been repaired.

#4 johnny c

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Posted 15 March 2012 - 04:59 PM

ive reset the battery,all faults are now clear,someone was dicking around with a plug and disconnected it,thats why those faults had shown.
but the car still 'misfires',it rev'd to 5800 rpm yesterday,then later would not go past 4000 rpm.

ive googled it and read someone who had a very similer problem, replace the crankshaft sensor,which cured the fault.

#5 johnny c

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Posted 15 March 2012 - 04:59 PM

ive reset the battery,all faults are now clear,someone was dicking around with a plug and disconnected it,thats why those faults had shown.
but the car still 'misfires',it rev'd to 5800 rpm yesterday,then later would not go past 4000 rpm.

ive googled it and read someone who had a very similer problem, replace the crankshaft sensor,which cured the fault.

#6 johnny c

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Posted 20 March 2012 - 12:41 PM

anyone shed any light on this?
also noticed it takes a few turns before it starts,it can be a little lazy.

#7 Alan Morgan

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Posted 24 March 2012 - 10:02 AM

I've had to replace a couple of pencil coils too. If you don't have access to a code reader, run the engine and disconnect the injector connectors one at a time. if the engine note doesn't change with one unplugged then that's the cylinder with the fault! You can't disconnect the coils one at a time because they work in pairs. ;) Once fixed, don't forget disconnect the battery again to re-set the codes!
I recently picked up a coil on ebay for £8 + £1.99 p&p, but be sure to check the serial numbers on your old one. ;)

#8 johnny c

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Posted 03 April 2012 - 11:48 AM

I've had to replace a couple of pencil coils too. If you don't have access to a code reader, run the engine and disconnect the injector connectors one at a time. if the engine note doesn't change with one unplugged then that's the cylinder with the fault! You can't disconnect the coils one at a time because they work in pairs. ;) Once fixed, don't forget disconnect the battery again to re-set the codes!
I recently picked up a coil on ebay for £8 + £1.99 p&p, but be sure to check the serial numbers on your old one. ;)


why would the engine note change when its idleing fine?
are you talking about a vvti engine or the 4afe?

#9 Alan Morgan

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Posted 04 April 2012 - 05:37 PM

Sorry my mistake, vvti engine. I'm getting mixed up with another thread!

#10 Avensis luna 03

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Posted 10 April 2012 - 09:39 AM

ive reset the battery,all faults are now clear,someone was dicking around with a plug and disconnected it,thats why those faults had shown.
but the car still 'misfires',it rev'd to 5800 rpm yesterday,then later would not go past 4000 rpm.

ive googled it and read someone who had a very similer problem, replace the crankshaft sensor,which cured the fault.


I think that might have been me.

I would suggest that you have the crank sensor problem too. Symptoms you describe are exactly like mine except for the slow starting bit. Mine was fine this way but I did find that most affected by a faulty Crank Sensor, either were slow in starting or in some cases, did not start at all.

The part is dealer only, or at least I couldn't find it elsewhere. You might get lucky in a breakers but you could be getting the same as what you have too.

Changing is simple, the only challenge is the access!

Let us know how you get on.

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