spark plugs and wires

This was originally posted as a reply to phil.o's "BAD ERRATIC MISFIRE/NOT PLUGS" My 2000 4.0 sohc has the same issues. Well, I should say symptoms, I don't know the issues It started with a slight hesitation, but only at speed, going up or down hill. Yes, I immediately blamed the EGR valve...

So I have a 2001 Trac and its been acting weird... Whenever I go up a hill or speed up fast it jumps.. Its almost like its struggling to go.. I replaced the spark plugs and spark plug wires cause that's what I was told to do... But it hasn't done any good... Any ideas on what it could be or why...

Hello, Im new to forum post, but I end up here a lot when Googling problems with my 1991 Explorer. Anyway, I was getting below average fuel economy and decided it was time for a tune up, I purchased new plugs ( Bosch Iridium #9655 ) and wires. When installing the new ones I crossed numbers 4...

1999 Explorer Sport OHV....the engine hesitates. Symptoms are: - Hesitation while accelerating, especially under load (uphill) - Hesitation is very sudden and jerky, and appears only when engine is hot and has been running for at least 30-45mins on a warm day, longer (2-3 hours) at night or...

Currently driving a 2000 Eddie Bauer 4L, 308,600K and looking at a newer model. What about a 2003 EB 4L, 154,00k for $4500? Seller says that it needs new plugs and wires. Sellers father says it has engine issues. What would you check out first at a pre-ourchase exam?