Originally Posted by taterkins02
my 93 wrangler 4.0, it idles fine, you can rev the guts out of it while its sitting there, but when you go down the road and the engine gets warmer it gets a hesitation then it loses power. what could be the problem? could it be the cps? and if so is there a way you can test them?
How old is the cat converter? When they start to go bad they will begin to hurt high end peformance and then it just keeps getting worrse until it starts to literally choke an engine off when it gets hot. It gets progressively worse over time.
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