Minor hesitation

1. Railroader Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx

   #1 6th December 2010, 10:23

   When I put my foot down from about 1/2 way to full throttle, there is a single misfire, its not missing it just cuts out for a fraction of a second, then continues nicely. 1.4i Saxo
   
   It doesnt do it all the time, just when its coldish I think. Apart from that it runs great. Ive tried putting a spare coil pack on but it makes no difference
2. tomnelson Frequent Poster Joined: Dec 2010 coalville Posts: 711 project flat arch

   #2 6th December 2010, 11:59

   check spark plugs just incase and if one is loose sometimes can loose compression when engine is cold
3. tom_lloyd_4 Regular Poster Joined: Nov 2010 alton hampshire Posts: 348 97 mk1 vtr 85 LR 90

   #3 6th December 2010, 13:07

   had a mate with the same prob in his 1.4 306 and it was his battrey had a bad cell try a battrey out of a mates car and see if it makes a difference if not could be the throtle pos sensor
4. Railroader Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx

   #4 6th December 2010, 18:13

   It did it again earlier today on partial throttle at low revs. Battery is fine its quite new. Its not a spark plug because it cuts out completely not just on one cylinder.
   
   Throttle position sensor sounds interesting. First I will wd40 all the connectors to the throttle body, and waggle some wires while its running, see if that does owt
5. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

   #5 6th December 2010, 18:20

   Do you mean when the Engine is cold or the weather?
6. Railroader Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx

   #6 6th December 2010, 19:29

   I wondered that myself, its the weather
7. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #7 6th December 2010, 19:34

   Battery could still of been affected in these harsh conditions, check spark plugs also
8. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

   #8 6th December 2010, 19:48

   Quote:

   Originally Posted by Railroader I wondered that myself, its the weather

   Oh right I thought you meant when your Engine was cold lol I was like well if you're booting it when you have a cold Engine, what do you expect... Lol
   
   
   And yes, it could be the weather, Every Engine is different, the moisture in the air makes some cars run better and some a little sluggish. Mine started bogging and juddering a few days ago, so I WD40'd the connectors, You know Crank Sensor, Map Sensor, Etc... And it's fine now...
   
   I wouldn't worry about it too much unless it gets worse mate
9. Stevo123 Established Member Joined: Apr 2009 Redcar Posts: 1971 2000 Posi Blue vtr

   #9 7th December 2010, 21:11

   I had hesitation when revving from idle. I cleaned the TDC sensor and it cured it. (it was covered in bits of mullered clutch release bearing though lol).