HOW TO REMOVE OIL PAN

  • Tiny
  • adadams
  • 1990 Cadillac Fleetwood
  • 187,900 miles

I am replacing the oil pan gasket and oil pump. I have removed the screws, starter and loose the muffer. Still having problem removing it. Do I hav to remove the transmission because the flywheel wont give me the clearance to remove the pan.

Saturday, March 17th, 2012 AT 8:23 PM

7 Answers

  • Tiny
  • rasmataz
  • Member

For what engine?

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Saturday, March 17th, 2012 AT 8:28 PM
  • Tiny
  • adadams
  • Member

5.7 v8

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Saturday, March 17th, 2012 AT 8:38 PM
  • Tiny
  • rasmataz
  • Member

V8 MODELS - 5.0L & 5.7L (VIN 7)
"B" & "D" Bodies
Disconnect negative battery cable and remove air cleaner and fan shroud. Raise vehicle and drain crankcase. Remove cruise control servo bracket (if equipped).
Remove Air Injection Reaction (AIR) hose-to-catalytic converter pipe. Remove AIR pipe-to-exhaust manifold. Remove the exhaust crossover pipe at manifold and converter. Remove starter and flexplate access cover. Disconnect transmission line bracket at oil pan. Remove engine mount through bolts.
Remove oil pan bolts and lower pan. Position front crankshaft throw and/or counterweight on horizontal plane so it does not interfere with oil pan removal. Raise engine, reinstall through bolts and remove oil pan.
V8 MODELS - 5.0L & 5.7L (VIN 8)
"F" Body
Disconnect negative battery cable. Remove air cleaner, fan shroud and distributor cap. Raise vehicle and drain crankcase. Disconnect exhaust pipe at manifold, Air Injection Reaction (AIR) pipe clamp and catalytic converter hanger bolts.
Remove front starter brace, starter and flexplate access cover. On models with M/T, it may be necessary to remove oil filter for access to flywheel cover bolts.
Remove engine mount through bolts and oil pan bolts. Raise engine and lower pan. Position front crankshaft throw and/or counterweights as to clear oil pan. Remove oil pan.
V8 MODELS - 5.7L (VIN 8)
"Y" Body
Disconnect negative battery cable. Raise vehicle and drain crankcase. Remove oil filter. Remove oil filter adapter at block. On A/T models, remove flexplate cover. On M/T models, remove starter and bellhousing cover.
On all models, remove oil cooler pipe at oil pan. Remove Electronic Spark Control (ESC) shield. Remove front crossmember braces. Remove oil pan bolts. Remove oil pan.

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Saturday, March 17th, 2012 AT 8:55 PM
  • Tiny
  • dan.5797
  • Member

I having a issue with removal of a oil pan off a 4.5L on a 1990 Fleetwood. Any ideas.

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Thursday, March 31st, 2016 AT 12:49 PM
  • Tiny
  • 2CarPros Ken
  • Admin
  • 2,895 posts

Stuck bolts or cant get it removed?

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Thursday, March 31st, 2016 AT 4:14 PM
  • Tiny
  • dan.5797
  • Member

I bought the gasket went to remove the oil pan and after removing all of the bolts I realized that there' s a coolant pipe running underneath the oil pan. No matter how many times I tried I couldn' t get it past that stupid pipe.

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Thursday, March 31st, 2016 AT 5:54 PM
  • Tiny
  • 2CarPros Ken
  • Admin
  • 2,895 posts

Yep I remember one of my guys going through that as well, the pipe must be removed to get the pan out.

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Friday, April 1st, 2016 AT 10:29 AM

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