erratic idle and start

saxby · 12-06-2007, 23:01

Evening all,
I have a petrol 1.6 1999 Octavia and it idles between 1300 and 600 rpm but is prone to cutting out at idle. It can also be a pig to start and smells of petrol when it does. I have been told it could be a dirty fuel/air filter.
If so , how difficult is it to chane the fuel filter ? Any clues ?
Cheers
Saxby

richm · 13-06-2007, 20:26

I'd be looking at the coolant temperature sensor - common failure and just the sort of behaviour you'd expect if it was faulty. Is it more noticeably difficult to start when the engine is warm (ie not first thing stone cold)?
If it still has the black sensor rather than the later green one then it would be a very good candidate.

saxby · 13-06-2007, 21:53

ta for the info. Any idea where the sensor is located so I can change it ?

fordfan · 14-06-2007, 07:55

The sensor will be in a housing on the passenger side of the engine, it will be a square sensor (possibly blue) with a 4 wire connection. Whats the engine code? AEE, AKL, AVU?

Also clean the throttle body.

saxby · 14-06-2007, 12:28

Cheers,
The engine type is 1.6 petrol AKL . I'm assumeing that the engine trim covers need to be removed first to get at the sensor
Saxby

KenONeill · 14-06-2007, 12:57

The black plastic obsfurcation cover that the dipstick and oil filler stick through? I think you need to remove it to do pretty much anything except topping up the oil level!

12-06-2007, 23:01	#1
saxby Briskodian Join Date: Apr 2007 Posts: 5 Thanks: 2 Thanked 0 Times in 0 Posts	erratic idle and start Evening all, I have a petrol 1.6 1999 Octavia and it idles between 1300 and 600 rpm but is prone to cutting out at idle. It can also be a pig to start and smells of petrol when it does. I have been told it could be a dirty fuel/air filter. If so , how difficult is it to chane the fuel filter ? Any clues ? Cheers Saxby

13-06-2007, 20:26	#2
richm Briskodian Join Date: Jun 2006 Location: Melksham Posts: 504 Thanks: 3 Thanked 20 Times in 20 Posts	Re: erratic idle and start I'd be looking at the coolant temperature sensor - common failure and just the sort of behaviour you'd expect if it was faulty. Is it more noticeably difficult to start when the engine is warm (ie not first thing stone cold)? If it still has the black sensor rather than the later green one then it would be a very good candidate.

13-06-2007, 21:53	#3
saxby Briskodian Join Date: Apr 2007 Posts: 5 Thanks: 2 Thanked 0 Times in 0 Posts	Re: erratic idle and start ta for the info. Any idea where the sensor is located so I can change it ?

14-06-2007, 07:55	#4
fordfan ECUless Join Date: Mar 2005 Posts: 1,818 Thanks: 28 Thanked 202 Times in 176 Posts	Re: erratic idle and start The sensor will be in a housing on the passenger side of the engine, it will be a square sensor (possibly blue) with a 4 wire connection. Whats the engine code? AEE, AKL, AVU? Also clean the throttle body.

14-06-2007, 12:28	#5
saxby Briskodian Join Date: Apr 2007 Posts: 5 Thanks: 2 Thanked 0 Times in 0 Posts	Re: erratic idle and start Cheers, The engine type is 1.6 petrol AKL . I'm assumeing that the engine trim covers need to be removed first to get at the sensor Saxby

14-06-2007, 12:57	#6
KenONeill Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland! Posts: 9,322 Thanks: 43 Thanked 433 Times in 426 Posts	Re: erratic idle and start The black plastic obsfurcation cover that the dipstick and oil filler stick through? I think you need to remove it to do pretty much anything except topping up the oil level!

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