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Author Subject: Lumpy with fans running
anth

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Location: Colchester

Registered: 04 Apr 2006

Posts: 3,651

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Post #1
Bit of a strange one, when idling below 98C the car is fine, when the coolant fans kick in the car seems to hunt and get a bit lumpy.

I guess that when the fans kick in the engine has to work more to supply power to them. But the rev counter doesn't seem to move below 1000rpm

Apart from this there are no other problems very occasionally it will dip below 1000rpm the ICV sticks when putting the clutch in at some speed or coming to a roundabout but this isn't often.

Any suggestions appreciated.

Posted 16th Oct 2009 at 01:26
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justinaccurate

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Location: Cov

Registered: 29 Apr 2006

Posts: 14,425

Status: Offline
Post #2
Not sure if its exactly the same thing but there was a time when mine was awful when it got hot, wanted to stall all of a sudden. I was also suffering from occasional hesitancy. I replaced the CTS and lambda at this time and the problem went.
Posted 16th Oct 2009 at 13:19
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anth

Seasoned Pro

Location: Colchester

Registered: 04 Apr 2006

Posts: 3,651

Status: Offline
Post #3
I may have the same issue then, im only assuming the fans are associated- could just be a coninsidence.

Where is the CTS sensor? Is that the one in cylinder head?

MAP looks easy enough to replace.
Posted 16th Oct 2009 at 13:04
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justinaccurate

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Location: Cov

Registered: 29 Apr 2006

Posts: 14,425

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Post #4
Sorry mate - dunno what came over me - I meant CTS and lambda Crazy

CTS is the green sensor on the thermostat
Posted 16th Oct 2009 at 13:18
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anth

Seasoned Pro

Location: Colchester

Registered: 04 Apr 2006

Posts: 3,651

Status: Offline
Post #5
justinaccurate wrote:
Sorry mate - dunno what came over me - I meant CTS and lambda Crazy

CTS is the green sensor on the thermostat


lol nice- thanks mate will see how i get on.
Posted 16th Oct 2009 at 13:50
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