At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
Where is the oil pressure sender on a 4.6l north star engine?
Installed a new oil pump on the crankshaft (NOTE)first north star engine virgin,1, didn't know the oil pump was on the crankshaft, the screen & pick up tube in the oil pan.2, the cross pipe from bank 1 to bank 2 now is shaped in a rectangle configuration and now travels under the oil pan
Re: where is the oil pressure sender on a 4.6l north star...
Vary rear left side almost touching fire wall .You will need a special tool to remove and install it .Its a large socket costs 20.00 or so depending ware you buy it .
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
You have to remove the engine front cover (over timing chain) and remove the oil pan to get the oil pump in and out. You don't have to remove the heads, however.
Removal & Installation
4.8L, 5.3L, 6.0L & 6.2L Engines
Fig. Exploded view of the oil pump mounting-4.8L, 5.3L, 6.0L and 6.2L engines
Fig. Oil pump disassembly-4.8L, 5.3L, 6.0L and 6.2L engines
Remove or disconnect the following:
NOTE
Do not allow dirt or debris to enter the oil pump assembly, cap ends as necessary.
NOTE
The internal parts of the oil pump assembly are not serviced separately (excluding the spring). If the oil pump components are worn or damaged, replace the oil pump as an assembly. Do not attempt to repair the wire mesh portion of the pump and screen assembly.
Engine front cover Oil pan Oil pump screen bolt and nuts Oil pump screen with O-ring seal. O-ring seal from the pump screen. Discard the O-ring seal. Remaining crankshaft oil deflector nuts. Crankshaft oil deflector Oil pump bolts
Oil pump To install:
NOTE
Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.
Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
Install or connect the following:
NOTE
Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
NOTE
Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
Oil pump bolts. Tighten the oil pump bolts to 18 ft. lbs. (25 Nm). Crankshaft oil deflector
NEW O-ring seal onto the oil pump screen
Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.
Install or connect the following:
Oil pump screen Oil pump screen bolt and the deflector nuts. Tighten the bolt to 106 inch lbs. (12 Nm) and the nuts to 18 ft. lbs. (25 Nm). Oil pan Engine front cover
Yes, is it the 4 or V6? I think it is either the oil pump shaft seal, or the crankshaft nose seal. The second one can be damaged by work in that vicinity such as removal of the crankshaft sprocket.
The oil pressure sender is not at that location on the 4-cyl or the 3VZ V6, but on the 1MZ V6 it is on the front face of the engine block below the alternator mount.
Change your oil pressure sender. The oil pressure sender will usually break before the oil pump will. If you are driving with the oil light on and the motor has not seized the oil pump is probably all right.When your oil light comes on you need to turn your car off immediately so you do not damage your engine crankshaft and camshaft bearings. If you change the oil pressure sender and the oil light stays on then you should replace your oil pump before more serious damage happens to the motor.
Low oil pressure can be from a restriction in the filter, a weak oil pump or excess clearnance between the crankshaft, camshaft, main and rod bearings. Low oil pressure when the engine has adequate oil means the engine is in need of at least a pump. It may even need an overhaul. My question would be does it run OK not leak or smoke and have good fuel economy. The best case if everything is running fine is that the sending unit is defective.
Remove all engine oil pan fasteners except two nuts at rear of engine.
Separate the engine oil pan from the front cover.
Disconnect the crankshaft position (CKP) sensor wire.
Remove engine front cover.
Pry the oil seal from the front cover.
Inspect the front cover seal area and crankshaft balancer seal area for damage.
Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are aligned.
Remove the crankshaft position sensor reluctor ring.
NOTE: Free play on the slack side of the camshaft timing chain must measure less than 0.43 inch (11Mm) or timing chain and sprockets must be replaced.
Remove the camshaft sprocket bolts.
Remove the camshaft sprocket.
Remove the camshaft timing chain.
NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.
Remove the crankshaft sprocket using J 5825-A.
Remove the crankshaft balancer woodruff keys (if required).
To Install:
Install the crankshaft balancer woodruff keys into the crankshaft.
Align the crankshaft sprocket keyway with the crankshaft balancer woodruff key.
WARNING Wear eye protection when installing crankshaft sprocket.
Use J 5590 to install crankshaft sprocket.
Install the camshaft sprocket and camshaft timing chain.
Ensure that the crankshaft sprocket alignment mark is in the 12 o'clock position and the camshaft sprocket alignment mark is at the 6 o'clock position.
Install the camshaft sprocket bolts and tighten the camshaft sprocket bolts;
Torque to: 18 ft. lbs. (25 Nm)
Install the crankshaft position sensor reluctor ring until completely seated against crankshaft sprocket.
NOTE: The composite type engine front cover and seal must not be reused. Always install a new engine cover with a new seal.
Install new engine front cover and bolts.
Torque bolts to: 106 in. lbs. (12 Nm)
Clean sealer from corners of oil pan gasket where it meets the engine front cover.
Apply a 0.196 in (5 mm) bead of adhesive, GM P/N 12346141 or equivalent, 1.0 in (25 mm) long to the engine front cover to engine block junction.
Locate the camshaft sprocket alignment mark in the 6 o'clock position and install the camshaft sprocket and timing chain
Camshaft sprocket bolts and tighten the camshaft sprocket bolts;
Torque to: 26 ft. lbs. (35 Nm)
Oil pump
NOTE: Do not lubricate the oil seal sealing surface.
Lubricate the outer edge of the oil seal with clean engine oil.
Lubricate the front cover oil seal bore with clean engine oil.
Install the crankshaft front oil seal with a suitable seal installer.
NOTE: Do not apply any type sealant to the front cover gasket (unless specified). Special tools are used to properly align the engine front cover at the oil pan surface and to center the crankshaft front oil seal.
Install the front cover gasket, cover, and bolts onto the engine.
Install the front cover-to-oil pan bolts and do not overtighten.
Tighten the cover bolts finger tight and do not overtighten.
J41480 installation-4.8L, 5.3L & 6.0L
Start the J41480 or other suitable tool to front cover bolts but don’t tighten the bolts yet.
NOTE: Align the tapered legs of the tool with the machined alignment surfaces on the front cover.
Seal alignment tool installation-4.8L, 5.3L & 6.0L
Install tool J41476 or other suitable tool.
Install the crankshaft balancer bolt and tighten the crankshaft balancer bolt by hand until snug but do not overtighten.
Tighten the J41480 bolts and front cover bolts;
Torque to: 18 ft. lbs. (25 Nm).
Remove the tools.
NOTE: Place a straight edge across the engine block and front cover oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gauge between the front cover and the straight edge tool. The cover must be flush with the oil pan surface or no more than 0.5 mm (0.02 in) below flush. If the front cover-to-engine block oil pan surface alignment is not within specifications, repeat the cover alignment procedure. If the correct front cover-to-engine block alignment cannot be obtained, replace the front cover.
Snug the oil pan-to-cover bolts in order to position the cover at the pan rail.
Tighten the oil pan-to-front cover bolts;
Torque to: 18 ft. lbs. (25 Nm).
Tighten the front cover bolts;
Torque to: 18 ft. lbs. (25 Nm).
Install the crankshaft balancer and bolt (See: Crankshaft Damper).
Install the water pump (See: Water Pump).
Fill the engine to the proper level with oil.
Fill the engine to the proper level with coolant.
Test drive the vehicle to confirm the repairs.
6.6L EngineTo Remove: NOTE: The 6.6L engine uses gears in place of a timing chain. For removal and installation, please see the Camshaft and Lifters procedure. This procedure covers the removal of the front cover and seal.
Before servicing the vehicle refer to the precautions at the beginning of this section.
Remove the upper intake manifold sight shield as follows:
Remove the retaining bolt in the front of the shield
Lift up on the front of the shield, then lift the shield off the rear bracket
Drain the cooling system.
Remove or disconnect the following:
Negative battery cables
Right front wheel
Right front fender splash shield
Upper fan shroud
Fan clutch (See: Engine Fan and Clutch)
Drive belt
Oil dipstick tube
Thermostat housing crossover
Crankshaft damper (See: Crankshaft Damper)
Crankshaft front oil seal
Water pump (See: Water Pump)
Camshaft sensor electrical connector
Camshaft sensor bolt and sensor
Crankshaft Position (CKP) sensor connector, bolt and sensor
CKP sensor spacer bolts and spacer
5 bolts securing the upper oil pan to the front cover
Bracket bolts and the bracket for the turbocharger outlet coolant pipe
Engine front cover bolts
Use a suitable seal cutter to separate the front cover from the cylinder block and upper oil pan
NOTE: Do not bend the turbocharger outlet pipe.
O-ring from the front cover
Engine front cover-6.6L engine
Oil pressure relief valve from the front cover
To Install:
Clean and inspect all sealing surfaces.
Install or connect the following:
Oil pressure relief valve with a new O-ring and tighten the valve
Torque to: 30 ft. lbs. (41 Nm)
Apply a 1/8 in. (2-3mm) wide to 1/16 in. (0.5-1.5mm) high bead of sealant to the front cover sealing surfaces to the engine block and oil pan.
Install or connect the following:
New front cover O-ring after lubricating it with engine oil
Front cover and bolts and tighten the front cover bolts
Torque to: 15 ft. lbs. (20 Nm)
Upper oil pan-to-front cover bolts and tighten the bolts
Torque to: 15 ft. lbs. (20 Nm)
Turbocharger coolant outlet pipe bracket and bolts and tighten the bolts
Torque to: 15 ft. lbs. (20 Nm).
Camshaft sensor and bolt and tighten the bolt
Torque to: 80 inch lbs. (9 Nm)
Camshaft sensor connector
NOTE: The CKP sensor spacers are machined with different timing positions. If you have to replace a spacer, make sure it has the same part number.
CKP sensor spacer and spacer bolts and tighten the bolts
Torque to: 89 inch lbs. (10 Nm)
CKP sensor and bolt and tighten the bolt
Torque to: 89 inch lbs. (10 Nm)
Water pump (See: Water Pump)
Crankshaft front oil seal
Crankshaft damper (See: Crankshaft Damper)
Thermostat housing crossover
Oil fill tube
Drive belt
Upper fan shroud
Right front fender splash shield and wheel
Negative battery cables
Refill the cooling system with the proper type and quantity of antifreeze.
First...this is where the pump is (gas tank) on the engines listed:
Illustrating fuel pump and sending unit sensor (3) on 1999-2005 4.8L, 5.3L, 6.0L Engines
Removal & Installation
Before servicing the vehicle, refer to the Precautions section.
Remove or disconnect the following:
Negative battery cable
Relieve the fuel system pressure.
Drain the fuel tank.
Remove or disconnect the following:
Fuel tank
WARNING
Do not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints.
Fuel sender assembly retaining ring using a fuel tank sending unit wrench. Remove the fuel sender assembly and the seal. Discard the seal.
Note the position of the fuel strainer on the fuel sender. Support the fuel sender assembly with one hand and grasp the strainer with the other hand. Pull the strainer off the fuel sender. Discard the strainer after inspection. Inspect the strainer. Replace a contaminated strainer and clean the fuel tank.
Fuel pump electrical connector
Electrical connector retaining clip from the fuel level sensor
Sensor electrical connector from under the fuel sender cover
Fuel level sensor retaining clip
Squeeze the locking tangs and remove the fuel level sensor.
Remove the fuel pressure sensor.
To install:
Install or connect the following:
Fuel pressure sensor
Fuel level sensor
Sensor retaining clip
Electrical connector to the fuel level sensor
Electrical connector retaining clip to the fuel level sensor
Fuel pump electrical connector
NOTE
Always install a new fuel strainer when replacing the fuel tank fuel pump module.
New fuel strainer in the same position as noted during disassembly. Push the strainer on the bottom of the fuel sender until the strainer is fully seated.
New seal on the fuel tank
NOTE
The fuel pump strainer must be in a horizontal position when the fuel sender is installed in the tank. When installing the fuel sender assembly, assure that the fuel pump strainer does not block full travel of the float arm.
Fuel sender assembly into the fuel tank
Fuel sender assembly retaining ring
Fuel tank. Install the fuel tank strap attaching bolts. Tighten the bolts to 30 ft. lbs. (40 Nm).
Refill the fuel tank. Install the fuel filler cap. Connect the negative battery cable.
Dear Friend
Removal: Support engine: remove -engine mounting, auxiliary drive belt, water pump pulley, crankshaft pully bots & crankshaft pully, timing belt covers....turn crankshaft to TDC on No 1 cylinder, ensure crankshaft sprocket, camshaft sprocket, oil pump sprocket & balancer shaft sprocket timing marks lighned. Pls note: Timing marks on camshaft sprockets should align with cylinder head uppter face, dowl pins on camshaft sprockets should face downwards....Slacken tensioner botl. Move tensioner away from belt & tighten bolt.
Remove: automatic tensioner unit bolts, automatic tensioner unit, timing belt, crankshaft bolt, crankshaft sprocket, crankshaft sprocket guide washer...slacken balancer shaft belt rensioner bolt, move tensioner away from belt & lightly tighten bolt...Remove balancer shaft belt.
Installation:
ensure timeing marks aligned.Note: Timing marks on camshaft sprockets ahould align with cylinder head upper face, exhaust sprocket mark is on recess but inlet sprocket mark is on tooth. To check oil pump sprocket positionded sorrectly: remove blanking plug from cylinder block, insert 8mm diameter Phillips screwdriver in hole. ensure screwdriver is inserded 60mm from face of cylinder block. If screwdriveer can only be inserted 20mm-turn oil pump sprocket 360". Inset screwdiver again.
Fit balancer shaft delt in anti-clockwise direction starting at crandkshaft sprocket....Slacken balancer shaft belt tensioner notl, turn tensioner clockwise to tension belt. Tighten bolt to 15-22 Nm... Applu thump pressure to belt at tentioner, belt should deflect 5-7mm. If not: Repeat tensioning procedure.... Install - chankshaft sprocket guide washer & crankshaft sprocket.
Thighten crankshaft centre bolt, tightening torque:110-130Nm. Please note, ensure crankshaft sprocket guide washer is fittet correctly. oil threads & contact face crankshaft botl before fitting.
×