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1999 Frontier 2.4l 2wd

530 Views 8 Replies 3 Participants Last post by  GotToGo, 
L
Need a little help, #4 misfire code i have changed plugs ,wires, distributer cap and rotor still no change replaced air filter checked for vacuum leaks tried crimping vacuum line to egr valve and checked ohms on injectors which are 10.3 to 10.5 on all 4 truck misses at low rpm's while through town as well as under load at stoplights but seems to accelerate great once i get above 2000 rpm's any thoughts? 212000 miles

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Original distributor?
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If you do replace it, go with Nissan OEM part.
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Perhaps it can be bench tested? Try an autoparts store for more info.

Battery terminals clean & tight?
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You're doing a fine job of troubleshooting thus far. Pretty sure it was member smj999smj that mentioned using OEM for most electrical parts. He was a Nissan service tech for many years and really knows his chit.
Good luck! Keep us posted...gotta hit the hay here.
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