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Drivers Side TB Hose???

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Drivers Side TB Hose???

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Old

Feb 19, 2009 | 11:53 PM

#1

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Drivers Side TB Hose???

ignore the title i meant passenger side

What is the hose that runs from the passenger side of the TB to the valvecover? I think its cracked because my engine is running horribly at idle.

UPDATE: Found out the name. Its the CCV hose. explains the problems im experiencing

Last edited by hitmanws6; Feb 20, 2009 at 01:49 AM.

Old

Feb 19, 2009 | 11:55 PM

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Quote:

Originally Posted by hitmanws6

What is the hose that runs from the passenger side of the TB to the valvecover? I think its cracked because my engine is running horribly at idle.

It could be the vaccum line though if you're running bad now. Get a new line if it is.

Theres also a crank case pressure vent line. If there's a build-up of pressure it'll vent back to the intake that way, also oil goes back into the intake that way too.

Take pics if you can.

Old

Feb 19, 2009 | 11:58 PM

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if the pressure line is damaged would that affect the car at startup or idle?

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Feb 20, 2009 | 12:01 AM

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Quote:

Originally Posted by hitmanws6

if the pressure line is damaged would that affect the car at startup or idle?

Just the vacuum line would cause issues with idle and start-up.

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Feb 20, 2009 | 12:04 AM

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but i didnt touch the vaccum line at all. i messed up the pressure line and had to use a connector to make it fit. i did notice the oil pressure fluctuating a lot so i think the line is the problem. also idle sounded way different, like it wanted to cut out

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Feb 20, 2009 | 12:12 AM

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Quote:

Originally Posted by hitmanws6

but i didnt touch the vaccum line at all. i messed up the pressure line and had to use a connector to make it fit. i did notice the oil pressure fluctuating a lot so i think the line is the problem. also idle sounded way different, like it wanted to cut out

I'm not sure which lines you're talking about. Are you stock? Is the PCV system stock?

Tale pics if you can.

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Feb 20, 2009 | 12:15 AM

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the big hose in the top of the pic
http://shbox.com/1/tps.jpg

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Old

Feb 20, 2009 | 12:21 AM

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Quote:

Originally Posted by hitmanws6

the big hose in the top of the pic
http://shbox.com/1/tps.jpg

Damn, thats a 1995. Others will have better knowledge of that year than me.

Maybe an "air pump", which is used only at start-up, if its like the 1998+ LSx's.

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Old

Feb 20, 2009 | 12:26 AM

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i think the hose is the same in all years

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Feb 20, 2009 | 12:30 AM

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Quote:

Originally Posted by hitmanws6

i think the hose is the same in all years

Do you mean the hose that connects to the TB where the word "throttle" is in that picture?

Thats a big hose. I don;'t think any LS1's have a hose that large connecting to the TB or the intake.

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Feb 20, 2009 | 12:35 AM

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yes i mean that hose

Old

Feb 20, 2009 | 08:14 PM

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That is the fresh air line for the crankcase, it allows air into the crankcase which is then drawn out through the PCV valve on the driver's side of the intake manifold. If it has any cracks in it it must be replaced, as it causes a vacuum leak, which can cause a rough idle as well as other problems.

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Feb 21, 2009 | 01:39 PM

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pcv hose goes from the throttly body to the pcv valve. mine was cracked too and gave me a rough idle replaced it and problem solved

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