Help Meeee Pleassse!!!!!!

[slammedSI]

Ok here is the deal, while driving at highway speeds there is a vaccum leek noise comming from under the driver side dash, Its pretty loud, well it started really quiet, now 2 days later its really loud. Also there is a tranny problem along with the noise, It has a really hard shift. And i mean HARD, It will accually chirp the tires going into 3rd and only 3rd, then when it goes to 4th it searches for it.. Also while crusing around 30-50 it will come out of gear then slam back into gear. The truck studders in tune with the hissing noise. I NEED HELP PLEASE!!!!

[Ditty]

hmmm...Maybe your tranny is going....just a guess. I'm no expert with auto trannys so I dunno for sure. I'll let one of the experts chime in on this one!

[cumminskiller]

start lookin for that vacuum leak i guess, can you hear it only when its gion faster or when you rev it up

[slammedSI]

Originally Posted by cumminskiller

start lookin for that vacuum leak i guess, can you hear it only when its gion faster or when you rev it up

Its only under load like when your driving, there is no noise when i rev it or when its ideling.. I have looked and checked for vacuum leak but no luck

[Rescuediver]

Gotta be a cracked hose, but I not sure if the tranny uses vaccum to shift. Maybe one of the tech will be along soon to help...

[CHenry]

I don't know of any vacume systems on these trucks - on the tranny that is....someone?

[slammedSI]

BUMP!!!!!!! I need help here. i really dont want to take the truck in and get bent over, A few guys on the form said it sounded like the Torqconverter was slipping?????

[slammedSI]

Bump



...

[straycat]

Hey Slammed, I'm scratching my head on this one, I can't think of anything under the dash that would affect the trans or shifting. I'm thinking it's sound transfer from under the truck, quite passably from the torque converter. Have you checked the fluid for smell? Other than that I'm at a loss, sorry man.

Gord.

[SCUFFY828]

trans has no vacuum controls of any kind , if you only hear the noise only under load , is probably a split intercooler tube boot or orange intake boot going into the head ,sometimes the clamp will slide around on those causing boost pressure loss and a bad hissing sound ,sounds to me like you have a 2 different problems ,does your overdrive light flash whe trans is acting up, and also what condition is trans fluid and is it full