00redsvt

So, I bought it in March. It's got 140k on it. About a month ago, it would miss whenever it was raining or cold enough to produce moisture. When it dried up, it would run excellent. Now it has started missing all the time and it's even worse in overdrive. We had it plugged up and it read cylinder misfire. My husband has changed the plugs and wires, replaced the coil on that cylinder and also the injector for that cylinder. It has excellent compression and I still drive it everyday. It's not bad enough to keep me from driving it but it's just aggravating. Now, in overdrive, I can't take it anywhere so I've been riding itwith overdrive off. My husband is tired of guessing and blowing money on parts. Has this happened to anyone else or does anyone have any ideas? Thank you!

DeathCougar

iTrader: (23)

If he wants to stop blowing money, just take it to a shop. We could toss out a host of things we 'think' might be wrong with it, but he will be in the exact same boat as before, replacing parts and guessing.

I would get ahold of a FSM, and start figuring out how to test things like the TPS sensor, and the MAF.

00redsvt

I just figured he might get some good suggestions here. Sorry.

00redsvt

Would any of the aforementioned cause a misfire with just one cylinder?

claudebadly

hhmm... you replaced.. plugs, wires, coil *on that cylinder-put it on the right cylinder? lol... the cps could be out.. and not saying when the cylinder is at the right spot therefor causeing the mis.. maybe... after you replaced the plugs and coil, did you reset the ECU... aka disconect battery for a couple minutes, that way it would reset itself back to factory setings wich might stop the misfire... long shot... but might work...

00redsvt

Okay, neither of us know anything about a vehicle unless it's a ford lol
But he did reset the ECU. What I meant by blowing money was that he doesn't know about toyotas. We live in a small KY town that has no stoplight let alone a reputable mechanic andthe toyota dealer is two and a half hours away. I figures maybe someone that knew about them could make a few suggestions. From the beginning my husband has thoughtthatthe cylinder was not working in time with everything else. He has gotten diagrams and checked the firing order and everything. If you could please tell me where the cps is I would appreciate it. Also, does anyone have anything to add about the fact that it would only do of in moisture to begin with? He has been under it and looked for naked and low lying wires but there are none. We just don't know what else to do.

b0n3mast3r

you can check you injector with a noid light kit. i had to replace my #2 injectoer at 216K mile

00redsvt

Well we had a guy atthe parts house to suggest it was the injector so we spent the $120.00 to replace it and itstill didn't help. My husband also thought that if the injector hadbeen bad it would have burnt the plug so he putanother new plug on that cylinder at the same time and it still didnb make any improvement. What puzzles me, aside from the fact that we can't figure out the problem is the fact that it started in the rain. That just doesn't make sense to me.

BigBallsMcFalls

it makes total sense.

example: when tin whiskers form, (look it up) or other solder joint issues happen in electronics, humidity will usually make the part change modes from work to fail or a busted part start working....
also the MAF is highly sensitive to 'dirt -and- humidity'. dirt alone may not have a problem until you get a rainy day... then blam... MIL comes on.

better to have it correctly diagnosed, usually saves time and money. find out the real cause now, and then save money later on 'how to remedy it'

00redsvt

Well I called the Toyota dealer and spoke to the service department. (as stated before, it's a good 2.5 hour drive). So I tell the guy what kind of vehicle I have and I explain the situation to him. He suggests that I have water in my distributor cap, which would be a perfectly acceptable explanation....IF it had a distributor!!

Also, about the cps, did you mean the cam position or the crank? If it's the crank, wouldn't it kill the whole motor as oppose to one cylinder? I k ow this is crazy getting help off of a forum, and I appreciate everyones patience and suggestions. Thank you very much. You've given my husband a few new avenues to travel and maybe one of them will work!

00redsvt

Okay folks. We diagnosed and successfully treated the problem. As of Sunday it was fixed. And now, today, it starts revving up to about 2500 RPM whenver it is idling. It does it in all gears except reverse. Any sugestions on this? Maybe a vacum hose?

KrashDH

Mind elaborating on what the actual problem was and the fix for future searches?

Froggy93

what was the fix?

00redsvt

There wasn't one but TWO injectors were bad.
That was Sunday and now it's going crazy idling. I couldn't even go through the drive thru at wendys cause it was so embarassing LOL

KrashDH

Well, you could try resetting the computer...there were a couple other high idle threads and pulling the neg cable helped them get things back to normal.

Froggy93

double check your vacuum lines. make sure that nothing got knocked off when you changed the injector

00redsvt

Okay thanks guys. We will reset it and check lines again. Will let you know if it helps! Thanks again!

00redsvt

I'm assuming bad gas was the culprit. I filled up the 4runner and got a gas jug full for the lawn mower and the mower wouldn't even run off of the gas. But, now a friend of ours is having the revving up problem and I don't think his problem is gas. I love my 4runner, but sheesh it has moneyed us to death! I got in it yesterday and started backing out of the driveway, whenever I hit my brakes there were none. My brake line had mysteriously busted in the two hours that it had been sitting. And of course the only parts house here doesn't stock brake lines, they have to be ordered! Argh!