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ok thanks i will try that when i get back

it is a m1009 the cucv k5 blazer

what should be done first to try and correct that get some injector cleaner and go from there?

ok a few days ago i fixed my vacuume leak and it shifts like new, but on my way back up to school i have to take the highway for 3 hrs. was driving and was at 65 for about 30 min then the truck would like hessitate at not wanna go faster then 63, so i went down to 60, 20 min after that it did...

was having problems with vac at the trans and found out that i have 20 vac going into th vacuum regulator valve and around 10 coming out so i cleaned it and nothing changed, i dont have enough right now to buy a new one and was wondering if it will hurt to just bypass the whole thing?

just a thought can i bypass the whole thing on the left side of the ip? or would it hurt something?

ok i think that i found the problem i have 20 vac. going into the thing on the top front of the engine and only around 10 vac. comming out, and that is the line that funs to the trans. should it be 20 in and out or is it right the way it is?

at the modulator

it is showing around 5 psi now

well found and put the rubber piece in and still shows low pressure

just noticed the new modulator does not have a rubber ring on the side that goes into the trans is that normal or should there be one there

yes

put in a new line and still low at the module, around 10 psi... any ideas and does it have to be a steel line that i put in there or can i do rubber or something else?

i am showing a low vacuum at the modulator now is that a sign for bad line on the bottom or can that also be a bad modulator, (even know i just bought a new one but doesn't fit the line that was already there i had to mod it a lil bit.)

ok redid all of the hoses up top and checked the steel line and seems like no leaks, still having the same problem... as it reves up i am getting like almost a kick down and gray smoke.

ok i will probably do that but how many vacuum hoses are there: 1 he metal one from the trans to up top 2 the rubber one from the metal one to the unit on the intake 3 the rubber hose from the unit on the intake that leads to the vacuum pump on the back of the engine. is that all of them ?

well i just tested it and during idle it is showing around 20 vacuum. for some reason it no longer makes the hiss noise when i turn off the truck. but i do now notice a small amount at trans fluid at the top trans line on the trans, could a little leak be causing this or what other ideas do...

is there a quick and easy way to check if that is bad. also is there a easy way to find out where else a leak may be?

I checked around the ip they look good, and i looked at the crd it looks dirty but seems to be working. and the hissing from what i can tell it comes from the driver side sear the area of the power steering pump. and are there any vacuum line diagrams so i can just go along and try and check...

ok well i replaced the vacuum module and the problem is still happening. but i noticed that when i shut off my engine i hear hissing in the front of the engine for about 5 or 10 seconds, would that be normal or a sign of a vacuum leak?