Hey, guys. First post on this forum, and I'm hoping you can help me diagnose a problem...
My roommate's 1987 EFI 4runner has been refusing to start recently, probably about twice a week. In between it runs fine, no roughness or funny idle. It cranks, but won't catch. If given a healthy shot of ether it will eventually fire, and then run great. I checked the spark from the coil last time this happened, and it seemed nice and blue/white. (I need to check the plugs/wires, but they wouldn't be intermittent, or keep it from coughing at all) I think this is a fuel or computer problem.
When it's misbehaving, all the lights, gauges, and accessories seem to work fine.
The alternator is about 1 year old.
The TPS ohms out at 300 closed, and 7K WOT, both within spec I think. Smooth progression between open and closed.
The cold start injector ohms out OK (3 ohms), as does the temp switch controlling it.
Being intermittent, I think it's got to be electrical...? I'll be throwing a fuel filter on soon, though.
Oh- no real strong smell of gas when it won't start, and the temperature outside is between 10-30F.

So, any ideas?

 

First off, its 4Runner heh. Its blasphemy to call it a Forerunner.

even tho the cold start itself is good...perhaps relay for the cold start? Or the Circuit open relay?

 

ARGH! I knew something looked wrong about "Fore".
That's what I get for being a VW nut- don't even know how to spell the rest!

I'll check the injector relay...what's a 'circuit open' relay?

 

Try this:
http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump

 

Wow, thanks guys! That looks like just the thing. I'll try the jumper next time it craps out.
Google's great, but after hanging out on thesamba.com for a few years I've found out that for specialized knowledge you can't beat talking to people.