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3.1 L engine won't release from transmission

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dcooke
New User

Jan 31, 2013, 1:57 AM

Post #1 of 2 (2932 views)
3.1 L engine won't release from transmission Sign In
I am having problem removing engine as transaxle wants to come up with engine on hoist chain. I removed 2 engine mount nuts, 3 transmission converter to flywheel bolts, 6 transmission housing to engine bolts, 4 transmission bracket to transmission bolts on driver side end, two exhaust pipe to exhaust manifold bolts at firewall. Everything looks clear around engine from top down view. Besides the dowel pins between engine and transmision, are there any other bolts that attach engine to transmission on this 93 Lumina?


re-tired
Veteran / Moderator
re-tired profile image

Jan 31, 2013, 7:01 PM

Post #2 of 2 (2871 views)
Re: 3.1 L engine won't release from transmission Sign In
feeling generous tonite

here you go:

3.1L Engine
  1. Disconnect both battery cables (negative first) and ground straps.
  2. Relieve the fuel system pressure.
  3. Remove the air cleaner assembly.
  4. Drain and recover the engine coolant.
  5. Remove the drive belt.
  6. Remove the accelerator cable and the cruise control cable, if equipped, from the throttle body.





Fig. To remove the accelerator and cruise control cables, first remove the air intake duct clamp . . .



Fig. . . . remove the bolts and cable bracket . . .



Fig. . . . then, while holding the throttle open, remove the cable ends through the slotted hole . . .



Fig. . . . and remove the accelerator and cruise control cables and bracket as an assembly
  1. Remove the cruise control module.
  2. Remove the coolant inlet line from the surge tank.
  3. Tag and detach the electrical connections from the following components:

    Electronic ignition Heated Oxygen Sensor (HO2S) Fuel injector harness Idle Air Control (IAC) valve Throttle Position (TP) sensor Engine Coolant Temperature (ECT) sensor Transaxle range switch Transaxle shift solenoid and TCC solenoid EGR valve Ground at the transaxle
  4. Remove the engine wiring harness from the top of the engine, set aside.
  5. Disconnect the throttle cable and the cruise control cable.
  6. Remove the alternator
  7. Apply the parking brake, block the rear wheels, then raise and safely support the front of the vehicle securely on jackstands.
  8. Remove the starter.
  9. Remove the A/C compressor with the lines attached. Position it safely out of the way.
  10. Disconnect and position aside the lower wiring harness.
  11. Disconnect the catalytic converter flange from the rear exhaust manifold.
  12. Remove the torque converter cover and torque converter-to-flywheel bolts.
  13. Remove the engine splash shields from the wheel wells.
  14. Remove the transaxle-to-engine brace.





Fig. The transaxle-to-engine brace (2), holds the engine (1), to the transaxle (3), by using these 6 bolts and two brackets. 3.1L engine shown
  1. Remove the two outer transmission mount bolts.
  2. Remove the upper and lower radiator hoses from the engine
  3. Disconnect the remaining heater hoses.
  4. Remove the fuel lines from the engine.
  5. Remove the following vacuum hoses:

    Vacuum modulator EVAP canister purge Power brake booster line
  6. Remove the heater outlet hose from the water pump.
  7. Install a suitable engine support/lifting fixture.
  8. Raise the engine slightly.
  9. Remove the engine mount and adapter.





Fig. Once the engine is supported and raised slightly, remove the engine mount-to-bracket bolts . . .



Fig. . . . then the two engine mount-to-body nuts



Fig. The engine mount can also be separated at the mount bolts, as shown here-3.1L engine
  1. Remove the lower engine mount strut and bracket.





Fig. Once the engine is supported securely and raised slightly, remove the lower engine mount strut . . .



Fig. . . . and lower engine mount bracket
  1. Disconnect the power steering lines from the pump and remove the pump.
  2. Remove the engine-to-transaxle retaining bolts.


NOTE Many of the bell housing bolts are of different lengths; note their locations during removal. It is imperative that these bolts go back in their original locations when assembling the engine and transaxle, or engine damage could result.
  1. Remove the engine and place on a suitable engine stand. Remove the flywheel bolts and flywheel.



LIFE'S SHORT GO FISH

(This post was edited by re-tired on Jan 31, 2013, 7:05 PM)





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