tylerspyler

Ok, so going up a hill (6.5% grade) with cruise or a/c on, the cruise will slow from 70 down to 50mph and the vents will shut off. When I let my foot off the gas, they all come back and work perfect.

My question is, why would it do this, my 2000 did not and the 98 does not. (the 2000 was wrecked)

Its a 2001 automatic with 132k

Also, not sure if it is related, every so often I get a code for a very small evap leak.

freegdr

vacuum issue associated to vacuum lines going to and from storage ball

tylerspyler

Oh, I should have said that I checked, visually, all the vacuum lines, but how would i check the storage ball?

Chaoscase

Vacuum!! There is a plastic football shaped ball on the passenger side firewall area. It is a vacuum tank that equalizes the vacuum during acceleration. It has two sides, one for cruise control, and the other for the vacuum actuators that control the dash venting.

Check the condition of the ball and for vacuum leaks in the hoses running to it. If the ball is cracked or damaged, Napa sells them for under $20. Use the GM part number. Same part just easier to find than the chrysler #.

Hope this helps!

freegdr

visually look for cracks also there a internal check valve if you dont find any thing a in line vacuum check valve can be installed in the supply line to it should help...

freegdr

two sides, ones a in the others a out,factory bumper its nounted passenger side back of bumper..as far as i no...

tylerspyler

Uh? I only have on hose and one nipple on the vacuum ball. Same goes for my friends 2001 and my 2000.

Chaoscase

My 90 has a line going in both sides from the intake manifold. On one side, there is a small hard line that goes into the fire wall for the vents. On the other side is a line that goes to the cruise actuator. An "In" line on both sides and an "Out" line on both sides. It may be different by models, but I have seen the exact same setup in many different years, both gen1 and gen2.

Chaoscase

Do you have cruise? Models with no factory cruise control had a more round ball with just two hoses.

Unless 2000 and 2001 have electric cruise control setups.

freegdr

no cruise here one in one out...

freegdr

one line going on it and a nipple sounds like hose is missing

should at very least be in and out?

sycoglitch

Wish I still had pics on my phone. Check my
Build thread there's pics there. The vac ball is on the back of the front bumper on the passenger side. Shake the ball check for internal moisture. Check the "T" connector that comes fr the vac ball and it goes to CC and inside.

Also as for the small evap leak, when was the last time you got a gas cap. I too had an evap leak on my 01, got a mopar OeM cap, stopped the evap clicking and the code

tylerspyler

I did and it seemed empty.

As for the in and out line questions, it only has 1 line that tees off to other things such as cruise and so on. the check valve I am thinking is my problem, I need to wait till monday so i can get a new one (advanced auto does not carry them and the dealer is closed sunday)