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Re: '03 GrandCherokee 4.7 blown ASD fuse?
Posted to Technical Discussion Forum on 7/7/2016

As others have said, check your cam/crank signals. Most likely the chain is off/stretched.

One question I have, what does the engine sound like on a cold start? Say like first time in the morning?

If it sounds noisy that will just be a strong clue of timin... Login to read more.