Engine hits a wall between 4000-5000rpm

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04-08-2014, 09:39 PM

hubbard88

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Engine hits a wall between 4000-5000rpm

My '05 XJR Acts like it is running up against the rev limiter between 4000 and 5000 rpm under hard acceleration. what could be the cause of this?

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04-08-2014, 10:32 PM

Cambo

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Hard to say without more info....

Have you read the codes? Does it stumble anywhere else in the rev range?

It's either fuel, air or spark related, if that helps...

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04-14-2014, 07:21 PM

hubbard88

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I found out today that cylinders 2,4,6,and 8 are cutting out. This is a whole bank. don't know what causes this.

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04-14-2014, 07:28 PM

Cambo

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You had the codes read?

A complete bank, this sounds familiar to another thread here a while back, turns out that catalytic converter on that side had collapsed and was choking it.

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