Question about 1998 Toyota 4Runner

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Have 1998 Toyota 4Runner Limited, 6 cylinder. Have had the starter replaced, tune up, oil change in the past several months. Now, the truck skips when going up a hill, almost like it is having trouble downshifting (it's an automatic). I'm concerned because of all of the funds we've put into this vehicle (and it needs new tires), so was hoping for some advice.

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Understanding the financial concerns,all the work done already, I will give you my opinion.
I prefer these questions to those that are technical.
You can forget the vehicles age in most cases and focus on the oil changes,spark plugs,filters,tires and on and on. What no one seems to accept ,is that all those are preventative maintainance items. They need over time to be done to all things. Lawn Mower,Snow Blower,etc.
Point being,is that in most cases they were NOT done to solve a problem, or drivability issues.
When you take a vehicle to a repair shop,my opinion only, they really don't know why your there. They sell you what you have neglected for years ( no harm intended) and release the vehicle,make enough money to stay in business another week.
That, along with lack of understanding ,of all the items that can fail to function properly, you most likely have NEW issues,and should not place fault or blame on a servicing shop or a dislike of a vehicle.

No one can diagnose over the phone or internet.

If you want to work on you own vehicle,education is the key. Todays vehicles are very complex and no one answer fits all problems.

You may have some type of ignition misfire and even egr valve going bad,as going up hills, puts a vacuum load as well as other stresses on components. Then the trans gets confused because the engine management systems, are already having issues and can't be worried about shift stratagy.

Write down the dates,symptoms,mph,rpm,gear your in,when things happen.
Don't leave a vehicle, that someone says, leave it, they will look at it.
Get involved,go for a road test,you driving and the mechanic riding.

Posted on Oct 01, 2010

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