High tickover after cat change

77rons · Feb 24, 2013

I replaced the cat and downpipe on my '99 1.8 petrol freelander. Started the engine and the revs sat over 2k. Thought it might just be the choke but it stayed high even after warming up. Gave the throttle a tickle and it coughed slightly and the revs stayed higher than 1500. Played with the throttle, reving up to 3500 and letting go and it coughs on the way up and stays high. Any ideas?
Thanks

The Mad Hat Man · Feb 24, 2013

old cat was blocked?

Soloby Rob · Feb 24, 2013

77rons said:
I replaced the cat and downpipe on my '99 1.8 petrol freelander. Started the engine and the revs sat over 2k. Thought it might just be the choke but it stayed high even after warming up. Gave the throttle a tickle and it coughed slightly and the revs stayed higher than 1500. Played with the throttle, reving up to 3500 and letting go and it coughs on the way up and stays high. Any ideas?
Thanks

A 1.8 petrol engine running is a bonus, rejoice in your good fortune.

77rons · Feb 24, 2013

Lol. Great engine! Think its just settling into breathing again and adjusting the ecu to suit?

timtheenchanteruk · Feb 24, 2013

did you disturb any sensor wiring when you were changing the cat, lambda sensors?? no idea specifically of the freelander, just other motors have at least one post cat, some pre and post

High tickover after cat change

77rons

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The Mad Hat Man

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Soloby Rob

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77rons

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timtheenchanteruk

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