NEED HELP REPLACING VACUUM HOSES!

1998 Chevrolet Cavalier

Tiny

alliedv22

July, 23, 2012 AT 10:43 PM

My check engine light recently lit up, and my car started to idle very low and rough, so I took my car to an auto parts store and got my codes checked. No numbers came back, only a bad emissions reading or something along those lines. The guy told me I probably have a loose or leaky vacuum hose. I looked at the diagram in my car of the vacuum hoses, but I can't figure it out. First, I need to know that I'm on the right track by wanting to replace my vacuum hoses. Second, I need help locating them!

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16 Answers

Tiny

saturntech9

July, 23, 2012 AT 10:52 PM

If there saying something about emissions then sounds like you have a emissions code which could be a vacuum leak for the evap.

Tiny

saturntech9

July, 23, 2012 AT 10:53 PM

Is your check engine light on now?If the check engine light is coming on while the engine is running there has to be codes somewhere.

Tiny

alliedv22

July, 23, 2012 AT 11:09 PM

Yes, my check engine light is on steady. Where is the evap. And attached hose?

Tiny

saturntech9

July, 23, 2012 AT 11:24 PM

What size engine do you have?If the light is on solid please try to get someone else to read the codes.I need the exact code numbers not code decriptions. That would really help me help you. Because right now iam flying even blinder then usual helping people online fix there cars. The evap line runs from canister solenoid all the way to the gas tank on top the gas tank under the car etc.I need the codes to better help you were you even start looking for the problem.

Tiny

alliedv22

July, 23, 2012 AT 11:29 PM

It's a 2.2 L. I'll check on those codes

Tiny

alliedv22

July, 24, 2012 AT 12:27 AM

The code from the auto parts store is p0440 evap. Emissions

Tiny

saturntech9

July, 24, 2012 AT 1:03 AM

The first thing I would check for that code is your gas cap see if the seal is cracking missing split etc. Thats going to be a fun to diagnose diyer code if its not the gas cap. Because the best way to look for a leak is with a evap smoke machine. You can see if a kind smog station will test the gas cap for you for free.

Tiny

alliedv22

July, 24, 2012 AT 1:24 AM

This could be causing it to idle low/rough?

Tiny

saturntech9

July, 24, 2012 AT 1:47 AM

I posted a diagram of where the canister purge solenoid is its number 18 in the diagram. See if both hoses are hooked up and undamaged. Also see if the solenoid is stuck open air shouldnt pass thru it unless its got power and ground. Also to answer your question the two problems may or may not be linked.

Tiny

alliedv22

July, 24, 2012 AT 2:25 AM

The rubber connecting one of the hoses is frayed, almost like slightly deteriorating. That same hose runs to the back of my engine, and has a splitter so two more hoses could stem from that one, but one is missing?

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