No Question about the vacuum on my '99 3800. So do we just tear it down and inspect the parts? Is there a way to be sure about cracks in the manifold beyond visual inspection?

35

Asked by Dec 17, 2012 at 11:29 AM about the 1999 Pontiac Bonneville 4 Dr SLE Sedan

Question type: Maintenance & Repair

Vacuum at oil filler
PCV is OK

3 Answers

33,695

There is a way to have both the heads and the intake tested to see what is leaking for sure but they will have to be removed. If you can't see anything visually once removed then having them tested will be a last resort.

1,975

Is it a strong vacuum? I would first try disconnecting hoses from the crank case one by one to see if that stops the vacuum. There has to be some vacuum to pull the piston blow-by gases back to the combustion chambers, to re-burn those gases.

33,695

Only one hose to the crank and that's the PCV and it runs to the intake hose. No manifold vacuum unless they changed something that has been working fine and efficient forever.

Your Answer

Add photo

Related Questions

Bonneville

Looking for a Used Bonneville in your area?

CarGurus has 533 nationwide Bonneville listings starting at $1,799.

ZIP:

Search Pontiac Bonneville Questions

Pontiac Bonneville Experts

#1 ticklemedaly
ticklemedaly
Reputation 380
#2 dandyoun
dandyoun
Reputation 360
#3 Js08016
Js08016
Reputation 350
View All

Related Models For Sale

Used Pontiac Grand Prix
30 Great Deals out of 2,871 listings starting at $900
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Buick Regal
115 Great Deals out of 10,863 listings starting at $3,995
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Chevrolet Monte Carlo
21 Great Deals out of 1,408 listings starting at $1,995
Used Chevrolet Malibu
948 Great Deals out of 79,664 listings starting at $1,500
Used Buick LeSabre
14 Great Deals out of 1,924 listings starting at $995
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Pontiac Firebird
12 Great Deals out of 724 listings starting at $3,990
Used Nissan Altima
1,027 Great Deals out of 81,562 listings starting at $1,200

Used Cars For Sale

2005 Pontiac Bonneville For Sale
70 listings starting at $2,995
2004 Pontiac Bonneville For Sale
75 listings starting at $1,799
2003 Pontiac Bonneville For Sale
85 listings starting at $2,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.