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Q: car runs great. clicking noise that gets louder when I excelerate on 1998 Ford Explorer

clicking noise gets louder when I excelerate barely hear it when foot on brake. seems like the noise gets lower at times.
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In addition to Ron's good suggestions, -- If you have the 4.0L SOHC V6 in this Explorer, it was around the time period where they had issues with the cam chain tensioners. These tensioners would cause a ton of racket from the cam chains. Also, the cam chain guides behind the timing cover also wore and broke apart in some cases, causing really extenuating problems.

I would have an experienced Ford technician near you have a look so that you can solve a potentially large issue. Good luck!
Might also be a cracked EGR tube. One shop claimed they couldn't even find a problem. Another correctly diagnosed it over the phone by my description. This causes exhaust gases to leak out, making it sound like a loud ticking noise. Sounds like it is coming from right below the center concole, at least in my V-8 5.0. Louder during acceleration, and gets quieter as the pipe (engine) heats up and presumably closes down the crack a little from metal expansion. Cheap part from Not so easy to get to though for replacement.
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