20 Most Recent 1998 Cadillac Catera - Page 5 Questions & Answers

Give some more details of the problem.

Not easy but doable. I would mark anything you aren't familiar with to get it back together right. Please let me know if you have any questions, and thanks for using FixYa.


IGNITION COIL REMOVAL & INSTALLATION
3.0L Engine

1. Remove the wiper arms
2. Remove the left and right side air inlet grilles
3. Remove the wiper motor.
4. Detach the power brake booster vacuum connection from the intake plenum.
5. Disconnect the spark plug wiring harness from the ignition coil.
6. Detach the electrical connection from the ignition coil.
7. Remove the bolts from the ignition coil, and remove the coil.

To install:

1. Installation is the reversal of the removal procedure.
2. Tighten the coil bolts to 71 inch lbs. 8 (Nm).
3. Tighten the power brake booster vacuum connection until snug.

valve cover removal & installation3.0L Engine
RIGHT

1. Disconnect the negative battery cable.
2. Remove the intake plenum and the intake manifold.
3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
4. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.

NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.

Fig. The location of the valve cover O-rings is shown here

Fig. The valve cover sealant application points
To install:

1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
2. Apply a thin coat of silicone sealer at the front and back of the seals.
3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
4. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
5. Replace the intake manifold and the intake plenum.
6. Connect the negative battery cable.

LEFT

1. Disconnect the negative battery cable.
2. Remove the intake plenum and the intake manifold.
3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
4. Remove the oil filler spout.
   1. Unlock the tab.
   2. Twist counterclockwise.
   
   
5. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.

NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.
To install:

1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
2. Apply a thin coat of silicone sealer at the front and back of the seals.
3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
4. Install the oil filler spout.
   1. Insert the spout and twist clockwise.
   2. Ensure the locking tab seats on the valve cover bolt head.
   
   
5. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
6. Replace the intake manifold and the intake plenum.
7. Connect the negative battery cable.

INTAKE MANIFOLD REMOVAL & INSTALLATION

3.0L Engine
This vehicle uses a sequential multiport fuel injected engine. Fuel injector connectors must be positioned onto their appropriate fuel injector or engine performance and exhaust emissions may be seriously affected. Fuel injector connectors are numbered to match their cylinders.

1. Remove the intake plenum.
2. Properly relieve the fuel system pressure.
3. Remove the fuel supply and fuel return hose from the fuel rail.
4. Fuel injector electrical harness connector.
5. Remove the intake manifold bolts and the intake manifold.

NOTE Mask off the ports to the intake manifold spacer. If foreign objects enter the engine, severe damage may result.
Clean the intake manifold sealing surfaces with a non-abrasive tool or solvent.
Do not damage machined aluminum surfaces or improper sealing may occur.

Fig. Location of the guide pins for the intake plenum-3.0L engine

Fig. Intake plenum-to-intake manifold mounting

Fig. The intake manifold bolt locations
To install:

1. Remove the masking from the intake ports.
2. Install the intake manifold, and tighten the intake bolts to 15 ft. lbs. (20 Nm), rotating the tightening sequence.
3. Reconnect the fuel injector electrical harness connector.
4. Couple the fuel supply and fuel return hose,. Tighten the connection to 11 ft. lbs. (15 Nm).

NOTE Counterhold the connections to prevent damage to the fuel rail.

1. Install the intake plenum.
2. Connect the negative battery cable.

304 is misfire on cylinder #4. #4 is the middle cylinder on the driver's side.
The other 2 relate to the crankshaft sensor:

P0335 Crankshaft position (CKP) sensor -

possible causes: circuit malfunction Wiring, CKP sensor, ECM

P0336 Crankshaft position (CKP) sensor - range/performance problem
possible causes: insecure sensor/rotor, air gap, wiring, CKP sensor

Is the car running? If yes, check for a loose connector on the crank sensor. You may need to take the connector off and see if there is any corrosion on the terminals. If yes, do your best to clean with a small screwdriver and/or electrical parts cleaner.

From what I can tell, the sensor is on the bottom of the engine near the idler arm, but it has a long pigtail such that the connector is on top of the engine by the fuel rail. See pictures below.

for the misfire,

Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

look in the fuse box at number 18 that is for the fuel pump it is 20a

Tcm is located beside the battery under a triangle shaped cover it's about 6"x8", silver colored. slides up and out. I had to buy a used one off ebay and had a GM dealer reprogram it. Bad thing is there hard to come by used. They have to have the exact same manufacture number. $100.00 to reprogram it. I shorted my tcm out trying to give some body a jump start, Jumper cable popped off and shorted across metal on the tcm and positive on the battery.

There are several models which incorporate a resistor in the fuse box. For testing purposes it can be bypassed with a wire to determine if it is the problem. Otherwise, the solenoid may have an in-line fuse...again bypass with a wire to determine the effect.

Your engine is a Interference engine.It could have internal damage.Remove covers to see.

Replace the lamps

You don't understand the purpose of the OBD CodesThey do not tell you what is wrong or to replace anythingYou never try anythingYou retrieve the codesThen use daignostic factory charts to find the problemthat caused the codesThat is why most people use a repair shop or dealerNo parts ever get installed until component tested & fail a testYou have no component knowledge,or testin skills & you areas you said Screwed

I'm not a mechanic but from experience I suggest that before you start with repairs, start with the fuel. You may have either picked up some dirty gas when last filled up or just stirred something up in the tank. Try a fuel cleaner from any auto parts store. Also, and this is probably not realated, the check engine light may come on if your gas cap is not tight. Good Luck

Ouch!
White smoke means water (steam) in the engine cylinders, coming from the cooling system....
broken head gasket or cracked cylinder wall.

1998 - you might want to temporarily use an engine sealer. AutoZone can advise which is best for plugging a head gasket leak.
It will need to be replaced ($200+) and get valve job done ($100) at an ato parts store that has a machine shop, since the valve head must be removed to replace the gasket between thr head and the engine block.

Not likely, but it could be water in your gas tank. Did you just fill up?
or was the car driven with an over-heated engine?

Look at the opil dipstick. There will be a milky substance in the oil. That's water mixed with oil.
--- sorry ---

it should have its own fuse in the fuse relay box.

http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0900c1528025eb48&partName=Starter&partId=0900c1528025eb48 Here's a link on how to remove your starter,Autozone will test it for free.

There may be a problem but some cars keep the radiator fan running after motor has been turned off to help cool the engine. My car uses this system but if it is cool out (below 60 degrees) it will not keep the fan running.

First have your alternator checked to see if the diode or regulator are getting weak. When they do that also have the battery tested for a dead cell. If after preforming these two test and nothing is found to be wrong, then it is most likely a computer error. when was the last time you had all the computer codings read and reset? If it's been awhile a good decoding cleanup my be the answer.

Hi Friend:

To Locate your thermastat, Open your Hood and look down at the top of your radiator.You'll see a Top Raditor Hose that goes from your radiator to your Thermastat Housing.

You'll see a Hose clamp on the Thermastat housing .

NOTE: before you loosen the Hose Clamp Make sure you your car is cooled down and remove your radiator cap to release any pressure that is in your system.

After the Hose is off you'll see a Domed shaped Housing that is your Thermastat Housing. Remove the Bolts that Hold the Housing on and Seals the Cooling System.From Leaking out of the Housing.

After removing the Housing you'll see your Thermastat .Just remove it and Clean up all old gasket Material so you can replace the gasket with your new one .But put in your new thermastat 1st.

Then make sure you seal the gasket with Gasket Glue. And Replace the Housing Bolts and Tighten up good and Sung.

Put back on your hose then clamp.And Refill your Radiator with Coolant.

This will get your new thermastat in and get you Ready to go .

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Thanks Again From: d_hubbs

there is a heater control valve behind the motor with 3 coolant/heater lines going 2 it , 1 may be leaking and its possible for the (PLASTIC) valve 2 be bad