please help guys, my truck will start up fine but has a spuratic idle, jumps up and down a bit, well after driving it for a bit and it's warm. when i come to a stop it shuts off, when i start it it jumps to 1 and1/2 rpm them dies....what do you guys think, spark plug? fuel filter?

 

Vacuum leak

 

really???? where is the vacume

 

you mean somewhere along the intake, as far as driveing the power is just a little bit less than normal, but when at idle it shuts off...

 

anyone have ideas??? i really need a bit of help

 

Unfortunately if it is a vacuum leak, it could be among any of the 3.0Million vacuum hoses in the engine bay. However if it's dying that readily, it's probably one of the larger hoses. Check the brake booster hose, and anywhere along the main air inlet from the air filter box to the resonator to the throttle body. One of the three parts on my air inlet tubing was cracked and couldn't get it to idle properly.

Might try spraying a little brake clean around some of the lines and see if the idle changes. TAKE CAUTION when doing this. The brake clean is flammable. I would advise doing this when the engine has cooled down a bit, but not overnight cold.

Mike in AR

 

:pat:

 

Any hissing going on under the hood? That's a sure sign of a vaccuum leak. What about the throttle body? Is it at least marginally clean?

 

no hissing going on, i would love to post a viedo if i knew how. i could post pictures??? i'm cleaning the throdle body right now and putting in new spark plugs..due to the jumpy idel....one thing i did notice is this....this morningi went to the muffler shop to put the magnaflows in drove, the truck drove like crap there, on the way home after being warm the engine cuts out when i let go of the gas or come to a stop.....can photobucket post viedo????

 

throdle body cleaned with cleaner and hoses checked, drivers side 3 spark plugs changed, it still sounds like a old ford truck. it does feel a little better. i do hear a hissing noise now that i've had it running in the garage. i have not kept it runing long enough to get warm. it's got a smokey exaust, light black/gray smoke (the cat and muffler is new ) i changed the oil and the old oil looked good. there is no leak around the engine or tranny, tomarrow i will xchange the 3 passanger side spark plugs then if i'm still stumped and advise here does not work i'm takeing it to the shop. thanks so any info

 

hey guys, well i took a viedo and i'm just waiting for photo bucket to upload it. you will be able to hear the truck run off beat, engine is pretty load but all stock, no fan shroud so you can't really hear much. the intake is hissing, i poped off a vacuum hose to hear what that sounds like. so after that i can hear nothing but intake so i dont think i have a vacuum leak. viedo will be up in a few moments

 

I didn't know you could upload vids to photobucket... cool.

 

ok photobucket wont upload my vid, i took my rig to the toyota dealership today and they told me it's a Mass air flow sensor and intake elbow. their mass air flow sensor is $700+ ya right......anyone here in CA have a MAF and intake elbow???????

 

NAPA has a reman for $180 with 90 day warranty

 

try the junk yard first, the air flow meters don't go bad that often, and its worth a shot

 

hey i found a yotatecher in thousand oaks with everything i need, i'm on my way, man it pays to search

 

oh my gosh, this dude had everything, i went to his house for a mass air flow meter and intake elbow for $100....a very fair price, this dude gave me the whole air box and everything. so i gave everything i had on me $120....i thought it was well worth it. he has everything you could imagine for toyota trucks. a huge house, with lots of land and under every tree was a land crusier jeep.....yes under every freaking tree this guy is the best for parts and a very fair price. he had a brand new f250 desil that ran on vegi oil.....50 cents per gallon....dude let me find his id and i will post it, he is the nicest person you will ever meet....

 

So here is his ID, I’m sure he wont mind since he's tiring to get rid of a whole lot of stuff......findley.........this guy is so nice and very prompt, please don’t be rude to him or try to get a CV axel for $15 cause that just pathetic…haha it was a story he shared with me. I just though it was so funny and sad someone tried to pull that.