2nd Gen 4Runner Stumbles and Dies

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Aug 26, 2009
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Annapolis, Maryland
Hey Guys,

I'm trying to help some friend with a '95 4Runner who live 700 miles from me. I know that this forum is for 3rd gens and later, but I don't see a forum for previous gens so I hope I don't raise any hackles.

Their truck stumbles and dies routinely. No CEL right now, but they had one fixed previously (I don't know what CEL it was) and the stumbling really started afterward. Their mechanic has suggested a problem with catalytic converter, but I cannot see how that would cause this kind of problem.

I suspect a problem in the fuel system, maybe clogged fuel pump pre-filter, or faulty fuel pump. I asked my friend for a description of conditions when this happens, and here is the reply:

"It hardly ever doesn't happen - weather does not matter, and the check engine light does not come on (anymore). The car will run fine, but then the engine will sound like it is starting to struggle (stumble?). And then very quickly, the car slows, loses power until it just stops. There are times when it stumbles and then regains, but it is only a matter of time. If you put it in neutral and pump the gas for a bit, it helps, but to me is seems temporary and still weak after that. The remedy that works every time I discovered (and this is probably very relevant), is to pull over, turn it off and back on again immediately. It ALWAYS starts fine then, even if it is only off for a split second. But it might only be 5 mins or 20 mins before the problem occurs again. For example, last night I drove a mile to, and a mile back from the theatre where Meghan's play is. I had to pull over once on the way there and once on the way back"

Any suggestions before they throw in the towel? They are in Portsmouth, NH if anyone knows a good Toyota mechanic up there.

Thanks as always.
 
I'd suggest a fuel filter as well.....
 
If the cat in completely clogged it will not run......he might want to take his mechanic's advise....

The scenario I'm imagining is a misfire cel that ended with dumping raw fuel into the cat......a short time later the cat dies and it becomes clogged....probably should find out what the cel that was fixed was for.
 

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