Question about 1999 Chevrolet Tahoe

1 Answer

I have 1999 Tahoe with 5.7 350 vortec engine and have replaced all upper gaskets and seals then replaced oil pump and rod bearings it held 60 p.s.i for one day then went back to dropping to 18p.s.i after only 15 minutes of run time is there something i am missing here please help as i am my own mechanic and any suggestions would be helpful

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 474 Answers

If you did not have crankshaft replaced or reground then the rod bearings will wear quite fast and lose oil pressure.

Posted on Sep 09, 2010

Testimonial: "Thanks that was what i was afraid of well guess it is time to motor hunt lol"

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

On a 3.8L what is the aspec diagram and tourque for the racker arm


Hi Juan, I'm AL the owner of Big As Auto Repair

Below is the torque specs for the rocker arm as you requested.

SPECIFICATIONS - TORQUE

DESCRIPTION N·m Ft. Lbs. In. Lbs. Camshaft Sprocket-Bolt 54 40 - Camshaft Thrust Plate-Bolts 12 - 105 Forged Connecting Rod Cap-Nuts 54 +¼ turn 40 +¼ turn - Cracked Connecting Rod Cap-Bolts (Refer to 9 - ENGINE/ENGINE BLOCK/PISTON & CONNECTING ROD - INSTALLATION) Crankshaft Main Bearing Cap-Bolts 41 +¼ turn 30 +¼ turn - Crankshaft Main Bearing Cap Cross Bolts (3.8L) 61 45 - Crankshaft Oil Seal Retainer Rear-Bolts 12 - 105 Crankshaft Damper-Bolt 54 40 - Cylinder Block Drain Plugs 20 15 - Cylinder Head-Bolts (Refer to 9 - ENGINE/CYLINDER HEAD - INSTALLATION) Cylinder Head Cover-Bolts 12 - 105 Flex Plate to Crankshaft 88 65 - Engine Mounting (Refer to 9 - ENGINE/ENGINE MOUNTING) Powertrain Torque Strut 54 40 - Exhaust Manifold-Bolts 23 - 200 Exhaust Crossover Pipe-Bolts 54 40 - Intake Manifold - Lower-Bolts 23 - 200 Intake Manifold - Lower Gasket Retainer-Bolts 12 - 105 Intake Manifold Upper-Bolts 12 - 105 Lifter Yoke Retainer-Bolts 12 - 105 Oil Filter Attaching Fitting 54 40 - Oil Cooler Attaching Fitting 27 20 - Oil Filter 20 15 - Oil Filter Adapter-Bolts 28 - 250 Oil Gallery Plug 27 20 - Oil Pan-Bolts 12 - 105 Oil Pan Drain-Plug 27 20 - Oil Pressure Switch 23 - 200 Oil Pump Cover Plate-Screws 12 - 105 Oil Pump Pick-up Tube-Bolt 28 - 250 Oil Dipstick Housing-Bolts 48 35 - Rocker Arm Shaft-Bolts 23 - 200 Spark Plug 16 12 - Thermostat Housing 12 - 105 Timing Chain Case Cover -M8 Bolt 27 20 - -M10 Bolt 54 40 - Water Pump-Bolts 12 - 105 Water Pump Pulley-Bolts 28 - 250
Should you need extra help visit my website here: http://www.bigasautorepair.com/

Apr 15, 2015 | 2005 Chrysler Pacifica

1 Answer

What are the big end torque settings for a Daewoo matiz 800


main bearing cap bolts 36-39 ft. lbs. oil pan bolts 51-69 in. lbs. oil pan nuts 43-60 in. lbs. oil pan drain plug 33 ft. lbs. oil pump cover bolts 72-84 in. lbs. oil pump relief valve plug 29-36 ft. lbs. oil pump sprocket nut 25-28 ft. lbs. Rear oil seal retainer bolts 84-108 in. lbs. rocker arm shaft bolts 14-15 ft. lbs. rod bearing cap nuts 23-25 ft. lbs. silent shaft sprocket nut 22-28 ft. lbs. spark plugs 15-21 ft. lbs. thermostat housing-to-Engine bolts 86-114 in. lbs. timing belt tensioner bolt 32-40 ft. lbs. valve cover bolts 43-61 in. lbs.

Nov 29, 2014 | 1999 Daewoo Matiz

1 Answer

Tercel 1992 main bearings torque


The Main Bearing Cap TorqueTo install:
  1. When reassembling, clean the bearing caps and journals in the block thoroughly. Coat the bearings with a liberal application of clean motor oil.



0900c15280051ec0.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: Always torque the bearing caps to specification


0900c15280051ec1.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 4: Main bearing cap bolt tightening sequence on 3E and 3E-E engines

  1. Fit the upper bearings halves into the block and position the lower bearing halves in the bearing caps.
  2. Place the crankshaft into the engine block, making sure it fits exactly into its mounts.
  3. Install the upper thrust washers on the center main bearing with the oil grooves facing outward.
  4. Install the main bearing caps and the lower thrust washers in the proper sequence. Make sure the arrows on the caps point towards the front (pulley end) of the motor.
  5. Tighten the cap bolts to specification in three passes. On 3E and 3E-E engines, use the correct sequence.
  6. Double check the end-play of the crankshaft by repeating the procedure described earlier.
  7. Turn the crankshaft through one or two full clockwise rotations, making sure that it turns smoothly and evenly with no binding.
  8. Attach the piston rods, following procedures given earlier in this section. Remember that the rod caps must be reinstalled in their original positions.
  9. Install a new rear main oil seal into the retainer and install the retainer onto the block. Tighten the bolts to specification.
  10. Install the rear end plate on the engine.
  11. Install either the driveplate (automatic) or the flywheel (manual), observing the matchmarks made during removal.
  12. If equipped with a manual transaxle, reinstall the clutch disc and pressure plate.
  13. Install the oil pump.
  14. Install the oil strainer and oil pan, using new gaskets.
  15. Rotate the engine into its upright position and continue reassembly of the timing belt, idler pulley and covers.
  16. Reinstall the engine in the car, following procedures outlined earlier in this section.
42 Foot pounds (Final torque)

Dec 15, 2012 | 1992 Mitsubishi 3000GT

2 Answers

I have a 96 chevy tahoe 5.7 vortec and it had a small knock in it so we put in a new crankshaft,main bearings,rod bearings,timing chain,timing cover and all seals and gaskets now the truck misses on number...


Oh man that's a tough one. It almost sounds like a bad head, however there is an electronic spark control mounted to the firewall, that could possibly be doing it. If it is fuel injected, check your injectors. Something else to check would be the fuel pressure regulator. I'll have to think more on it, because you have replaced so much. Have you checked for trouble codes? The throttle position sensor can cause some of your symptoms. Hope this helps, but I think you might have a faulty esc control (electronic spark control)

Jun 09, 2011 | 1997 GMC Suburban

1 Answer

I am a woman trying to locate or see what the thermostat under my 1999 chevy tahoe looks like?


The thermostat is inside a round ball at the engine side of the upper radiator hose. There are two bolts holding the housing to the engine and a paper gasket to seal it.

Mar 18, 2011 | 1999 Chevrolet Tahoe

1 Answer

I have an intake leak where the 2 gas lines go into the intake, what would cause this and how do i repair it? the engine was recently removed and replaced if that helps and it is on a 1998 chev tahoe with...


you will have to remove upper intake plenum the black plastic part there is a o-ring around the area you are speaking of. now if this engine didn,t have the intake gaskets replaced before installing now would be good time because if you keep vehicle believe me you will have to do sooner or later these engines came with plastic intake gaskets that are notorious for leaking to do this you will njeed to remove both upper and lower intake manifolds I just started a job on 99 tahoe today before lunch and customer is driving tonight replaced upper and lower intake gaskets fel-pro makes updated gaskets for this engine that has thick metal shim and rubber gaskets a great improvement that ends this problem as for your vacuum leak at opening for fuel lines don,t see often but is possible hope this helps

Mar 29, 2010 | 1998 Chevrolet Tahoe

1 Answer

Need bolt torqe specs , rods, mains, oil pump & oil pan for 6.0 vortec engine thanks


Connecting Rods: First pass 15 lb ft. If you have an early first design final pass 60 degrees. Second design 75 degrees.

Main Crank Bolts: Inner bolts first pass 15 lb ft. A final pass additional 80 degrees. Tighten the outer bolts/studs 15 lb ft. Final pass 53 degrees.

Tighten the side cap bolts to 18 lb ft. Tighten the bolt on ones side of the bearing and then tighten the bolt on the opposite side of the same bearing cap.

Oil Pump Bolts: 18 lb ft.
Oil Pump Screen Nut: 18 lb ft
Oil Pump Screen Bolt: 106 lb in
Oil Level Indicator Tube Bolt: 18 lb ft
Oil Level Sensor: 115 lb in
Oil Pan Drain Plug: 18 lb ft
Oil Pan Bolt: 18 lb ft
Oil Pan (to front cover): 18 lb ft
Oil Pan (to rear cover): 106 lb in
Oil Pan Skid Plate Bolt: 15 lb ft

If you need more specs contact: melissapowers75@gmail.com

Feb 02, 2010 | Chevrolet C2500 Cars & Trucks

3 Answers

1999 tahoe has water mixed with engine oil.RBM starts to decrease. what should i do ?why water mix with oil? in the future ,what are the consequences?


Get that fixed ASAP, Water in the oil will destroy the bearings. The intake manifold gaskets may be bad, leaking water into the engine. Have a repair shop check it out and recommend repairs. Do not put this off, unless you want a new car.

Nov 04, 2009 | 1999 Chevrolet Tahoe

1 Answer

Do you have pictures of the parts that need to be removed in order to change the oil pan gasket?


Section 03-01: Engine, 4.6L (4V) 1997 Continental Workshop Manual IN-VEHICLE SERVICE Oil Pan/Oil Pump Screen Cover and Tube Removal
  1. Turn rear suspension leveler compressor switch (5K761) off (located in luggage compartment).
  1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
  1. Remove oil level dipstick (6750).
  1. Raise vehicle on hoist.
  1. Remove dual converter Y pipe (5F250). Refer to Section 09-00 .
  1. Drain engine oil from crankcase.
  1. Disconnect engine control sensor wiring (12A581) from the low oil level sensor connector.
  1. Remove the power steering pressure hose retainer brackets from the engine front cover studs (two places). Position the power steering pressure hose (3A719) out of the way.
  1. Remove 16 bolts retaining oil pan (6675) to cylinder blocks (6010) and remove oil pan and oil pan gasket (6710).
  1. Remove two bolts retaining oil pump screen cover and tube (6622) to oil pump (6600).
  1. Remove bolt retaining oil pump screen and cover and tube support brace to main bearing stud spacer.
  1. Remove oil pump screen cover and tube. Discard O-ring.

  2. 02d437f.gif

      Item Part Number Description 1 W701240 Bolt (16 Req'd) 2 6675 Oil Pan 3 6622 Oil Pump Screen Cover and Tube 4 6010 Cylinder Blocks 5 6710 Oil Pan Gasket A — Tighten to 20 Nm (14 Lb-Ft), then rotate 60 degrees clockwise
        Installation
        1. Inspect oil pump screen cover and tube and replace if necessary.
        1. Position oil pump screen cover and tube on oil pump with a new O-ring and hand-start two bolts.
        1. Install bolt retaining oil pump screen cover and tube to main bearing stud spacer finger-tight.
        1. Tighten oil pump screen cover and tube-to-oil pump bolts to 8-12 Nm (71-106 lb-in). Tighten oil pump screen cover and tube to main bearing stud spacer bolt to 20-30 Nm (15-22 lb-ft).
        1. Clean oil pan and inspect for damage.
        1. Clean sealing surfaces of engine front cover (6019) and cylinder blocks with a clean cloth. If scraping is required, only use plastic-tipped scrapers to prevent damaging the aluminum sealing surfaces.
        1. Position new oil pan gasket on oil pan.
        1. Apply Silicone Gasket and Sealant F6AZ-19562-AA or equivalent meeting Ford specification WSE-M4G323-A6 where engine front cover meets cylinder blocks and crankshaft rear oil seal retainer meets cylinder blocks. Position oil pan on cylinder blocks and install 16 bolts. Tighten bolts in sequence to 20 Nm (14 lb-ft), then rotate an additional 60 degrees clockwise.

      Apr 03, 2009 | 1997 Lincoln Continental

      Not finding what you are looking for?
      1999 Chevrolet Tahoe Logo

      457 people viewed this question

      Ask a Question

      Usually answered in minutes!

      Top Chevrolet Experts

      yadayada
      yadayada

      Level 3 Expert

      75822 Answers

      Colin Stickland
      Colin Stickland

      Level 3 Expert

      22156 Answers

      Jeff Turcotte
      Jeff Turcotte

      Level 3 Expert

      8215 Answers

      Are you a Chevrolet Expert? Answer questions, earn points and help others

      Answer questions

      Manuals & User Guides

      Loading...