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SAAB engine

Tiny
MIKE2002
  • MEMBER
  • 2002 SAAB 9-5
  • 4 CYL
  • FWD
  • MANUAL
'02 Saab 9-5; I'm hearing a knocking sound when I apply the gas. The oil light came on and I put a quart in after driving it a little. I then changed the oil but the knocking is still there. I'm worried, what is the problem?
Monday, January 3rd, 2011 AT 9:23 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
You should be worried. Symptom indicates bad news. The oil light coming on indicates low oil pressure which could be due to low oil level or a fault in the lubriccating system.

The lack of lubrication has resulted in the connecting rod bearings being daamged and causing the knocking noise. DO NOt drive the engine and hope the damage is not too bad and can be rectified by replacing the bearings.

Keep your fingers crossed.
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Monday, January 3rd, 2011 AT 9:30 PM
Tiny
MNTHNY4
  • MECHANIC
  • 612 POSTS
Remove oil pan & check for sludge, if any clean with a good oven cleaner also remove & clean oil pick up tube, then check main & conrod bearings if damage replace only if crankshaft checks out ok, good luck.
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Friday, January 7th, 2011 AT 4:07 AM

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