How do you find vacuum leaks

txdscrt · Post by **txdscrt** » 27 Aug 2011, 17:36

Hi Everyone,
For my 97 850 GLT, I got my radiator put in! Thanks everyone for the yellow cream in the radiator help.
In the process I decided to change the throttle body gasket and PCV system replacement.
Now I keep pulling P0505 and P0301 codes.
My question is how do I find vacuum leaks?
I've used the carb cleaner around hoses and found one which I fixed.
Are there other ways to find leaks?
I also start getting a tapping like its low on oil every once in a while.
Also the car is idling really high now, although cleaned the IAC.
Could this also be related to the fact that after the radiator fix, my temp display next to time on the dash says "LO"?
I can clear the codes but they come back after about 20 miles.
HELP!! This is driving me batty!
JJ

claymore850 · Post by **claymore850** » 27 Aug 2011, 17:47

Hey friend, i've used carb cleaner, and works great, by now is the best method i found. Start changing the hoses near the intake manifold, and over the radiator, dont forget to check the idle valve hoses, it cracks and fails just when became hot. The elbows (small) on the manifold cracks or loose diameter and let vacuum leak on the body.
good luck

Claymore

Post by **JRL** » 27 Aug 2011, 18:45

You smoke the car

Post by **jimmy57** » 27 Aug 2011, 19:40

LOL, Smoke the car as in take it to a shop that has the smoke producing machine used for finding leaks.

txdscrt · Post by **txdscrt** » 28 Aug 2011, 07:03

claymore850 wrote:Hey friend, i've used carb cleaner, and works great, by now is the best method i found. Start changing the hoses near the intake manifold, and over the radiator, dont forget to check the idle valve hoses, it cracks and fails just when became hot. The elbows (small) on the manifold cracks or loose diameter and let vacuum leak on the body.
good luck

Claymore

Thanks Claymore! There are a couple I haven't changed yet. I had not thought of the larger idle air control hoses because they looked ok.
I'll replace the small ones connecting at the manifold.
Thanks

txdscrt · Post by **txdscrt** » 28 Aug 2011, 07:06

jimmy57 wrote:LOL, Smoke the car as in take it to a shop that has the smoke producing machine used for finding leaks.

Hey Jimmy57,
Any idea how much a shop should charge for smoking the car?
My guess is a Volvo shop would be less expensive than the dealer?

JJ

Post by **brandonbeach14** » 28 Aug 2011, 08:55

I had a leak earlier this year. Took it to Pepboys for $85. They found 3 small leaks for me with smoke machine.

txdscrt · Post by **txdscrt** » 28 Aug 2011, 11:55

Thanks Brandon. I'll check them out.