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Join Date: Apr 2019
Location: Raleigh, NC
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96 3.4 odd starting problem
Very helpful forum, just signed up to get some help!
I checked through several threads here and elsewhere and can't pin down this issue.
My father in-law has a 1996 4Runner 4wd 3.4 Auto he purchased new.
Well maintained, he was always good about his service maintenance, but it is old. Vehicle has 324k, original drivetrain.
When it's cold, or hasn't been started in an hour or so, it fires up just fine. When it's been driven recently, it won't start.
It cranks all day long but won't fire, unless you jump start it or it hasn't been driven in an hour or so. If you jump it, it'll fire up. Seems like it has to be cold, or get extra juice, and the battery is above the recommended CCA (and brand new, it's cranking it over all day long, I replaced it yesterday because the old one wasn't holding a charge).
I replaced the fuel pump/strainer/filter a month ago and double checked it this weekend. I replaced the battery (it was old) and starter yesterday. Alt is testing good and putting out steady voltage. It will crank all day long with no lag or drop in power, but it won't fire unless those above conditions are met. No check engine light pops on, I've had a basic scanner on it and nothing shows up.
I'm not a mechanic but I've always done my own maintenance and am comfortable doing basic diagnostic work but I'm at a loss with this one. Any help at all is greatly appreciated.
I should note the key occasionally gets stuck, not often at all, and bumping it from Park to Neutral and back to Park lets it come out every time.