Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Heyo, right folks - engine is running a bit rich I think, and sometimes has a slight misfire under load...
I'm thinking a sensor? Which one - CTS?
Help me out 
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DAZ1985
Member
Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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CTS can cause over fuelling if its sending the wrong signals
But its not the only sensor that can effect the fueling
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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What else would you say could be at fault here?
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DAZ1985
Member
Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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Lambda
AFM
???
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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The CTS on mine was making mine misfire because it ran so rich.
A set of new plugs were black after 30 miles. Swapped the CTS and all is fine.
It's worth replacing it anyway as they're only cheap.
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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Does your EM light come on ellis? as it could be a number off things 
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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There's a high chance it could be on I guess, makes things difficult seeing if it is on when there isn't a bulb 
quote:
Originally posted by Terry12
The CTS on mine was making mine misfire because it ran so rich.
A set of new plugs were black after 30 miles. Swapped the CTS and all is fine.
It's worth replacing it anyway as they're only cheap.
Yeah I think I'll do that today - that is pretty much what is happening to me!
Thanks guys
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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Fit a bulb then  and do a paperclip test 
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Oh can you still do that with the XE in?
Ace, didn't know that
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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quote:
Originally posted by Ellis
Oh can you still do that with the XE in?
Ace, didn't know that
Aslong as your wiring was done right and the EM wired in then yea it will read the codes, easyer to do a check first rather than just starting to replace things
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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Mine never put the ECU light on but misfired like a dog and overfuelled.
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Just bought a new CTS just now, will fit it once it's cooled down a smidge
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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From Vauxhall? How much you pay fella?
Tip for you, Have the new CTS ready to fit as when you remove the old one your collant will run out. I try to do it as fast as possible.
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Think it was around £12 from Vaux...
Cheers for the tip, better wait for the water to cool down though
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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I'm stupid I do it hot, Did the same removing an exhaust manifold. Still got the burn mark on my wrist
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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quote:
Originally posted by Ellis
Think it was around £12 from Vaux...
Cheers for the tip, better wait for the water to cool down though
 mine was only a few quid from vaux
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Really? So I was ripped then
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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Or did you buy the 2 off them?
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Just the larger one, what does the smaller one do - any idea?
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B3KAN
Member
Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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quote:
Originally posted by Ellis
Just the larger one, what does the smaller one do - any idea?
The small ones for the temp guage
Awell looks like you did get ripped off then
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Checked the receipt, it was just over £8 - don't know where I got £12 from
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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Did you fit it then fella?
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Yeah, runs much better now 
Still a slight misfire under load, but that I think is due to the intake pipework being a bodge and the exhaust isn't sealed properly yet - fingers crossed that'll be it sorted after that
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Terry12
Member
Registered: 24th Sep 07
Location: Manchester
User status: Offline
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Any improvement is worth £8 imo
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Exactly, that was what I though - the smell of fuel has gone so I'm guessing the ECU was just running the car on a cold map cause the resistance of the CTS was high at all temperatures
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