i got a 91 4runner 4wd v6 auto....running strong...but idle is sputtering slightly.....after a drive around the block i come to a stop, still in drive with my foot on the brake....the sputtering begins and the the engine dies....i've changed the spark plugs and wires...i've changed the distributer cap and roter.....what do i do....whats going on

 

have you checked all your vacum lines, fuel filter etc?

 

sounds like a vacuum line to me

 

i have not changes the fuel filter...i have an extra one at home brand new....i will do that tonight....what are vacume lines....all my lines have been ok i guess....any detail on those lines?????

 

anyone?????? please help

 

Any white smoke out the tail pipe?

 

Check your firing order. You may have cross-wired a plug. But I'm leaning towards a vacuum line, either loose (easy to find) or leaking (harder to find) . Also, check to ensure that the seal at the throttle body to air intake is intact. Mine got a little 'crumbly' at the bottom and I only discovered this when I was cleaning the tb.

 

a bit of white smoke only when i just start it up after being cold for a while, a few dripps from the tail pipe....when i gas a bit of white smoke but again only when i just start it......after it is warn and i drove it a block i come back to the garage....no white smoke, not drips of water from moisture, but it sputters.....not slow putts, quick sputters.....when i come to a stop in gear with my foot on the brake it takes a few seconds and then turns off....on the inside, when i come to a stop in gear with foot on brake....rpm goes up down up down and down all the way and dies.....i only did this once and the truck only died once????????????????????? fuel filter is something every is saying, but again everyone said spark plugs and wires...i did that and cap and roter for the distributer....i know i pluged the wires in the dis right but i'm not sure if i pluged them in the right spark plug....i think i would have noticed that real quick though

 

Could be a fouled plug wire. Remove (and replace) one at a time, from the plug side. If you remove one and nothing changes, THAT'S the one.

 

i just bought them new from toyota on saterday when i started this project...i dont think i put them in the wrong spot or i would have noticed....also the wire were only just long enough to reach

 

The reason I asked about white smoke was I had spuddering at idle after warming up when my headgasket started to go. It didn't get bad enough to kill the engine in my case but I didn't let it get to the point that white smoke was visible either.

When you took out the old plugs did they all look the same?

 

no most were almost black and dirty one was less dirty but all very close....how hard is a head gasket to change????? and direction that i could print

 

I haven't done it, mine was done by the dealer under the recall (at 53,000 miles in 1997). You can call Toyota to find out if your's has been done under the recall. Toyota case line #(800) 331-4331. One little tip when reading the letters in your vin# over the phone say Victor instead of "V", David instead of "D" etc.

Here is the FSM for the 93 but they should be almost identical: http://personal.utulsa.edu/~nathan-b...fsm/index.html

I'm not saying your headgasket is definely bad, just a possiblity.

 

hmmm sounds like there may be a little bit of corrosion on the traceboard on the VAFM....check that out also check the TPS...

 

what and where is VAFM and TPS?????

 

The VAFM is the Vane Air Flow Meter which resides atop the air box. The TPS is the throttle position sensor and located on the side of the throttle body facing the firewall.

do you have a toyota FSM (Factory Service Manual)?

 

NO

 

 

Did you check the air inlet hose at the Throttle Body? You will need to take it off the check it. Mine was cracked on the bottom and I didn't see it, but it ran like crap.