How to replace the intake in a GM 3.1L engine?

1) Disconnect the negative cable at battery. 2) Unplug and mark 8 or 9 electrical connectors from their devices at the top firewall side of the engine. 3) Now you can remove the air cleaner duct. 4) Remove the accelerator and cruise control cables from the mounting bracket. Set off to the side.

Where is the lower intake manifold on a Chevy?

The lower intake manifold is the tricky part. You have to jack up the motor and remove the passenger-side motor mount in order to remove one of the bolts from the intake manifold. The power steering reservoir is bolted to the block right over one of the bolts to the lower intake manifold.

How much torque does a GM 3L 191ci have?

444 50.17 3100 – Right Strut Mount to Engine Block Type: 35 420 47.45 3100 – Torque Strut Through Bolt Nuts Type: Bolt 43 516 58.3 3100 – Front Mount Bracket to Oil Pan Bolts Type: Bolt 8 96 10.85 3100 – Camshaft Position Sensor Bolt Type: Bolt 15 180 20.34 3100 – Rod Caps – 2 Steps: 15 FtLbs; +75deg Type: 37 444 50.17

How to replace an alternator in a 3.1L engine?

Three 10mm bolts. 10) Remove the two little heater bypass hoses from the throttle body. 11) Remove the alternator. There are two bolts in the back that hold it along with the pinion one in the front. The bracket for the alternator will have to come off after the alternator is removed.

How do you remove a vacuum line from an intake manifold?

Loosen the clamps on the vacuum lines on the upper intake manifold, using the screwdriver. Pull the lines off the upper intake manifold. Unplug and remove the manifold absolute pressure sensor and exhaust gas recirculation valve, using the appropriate sockets.

How to replace fuel rail in GM 3.1L engine?

Reattach two clamps and an 8mm bolt to the housing that attaches the assembly to the water pump. 8) Mount the fuel rail assembly at the same time as the power steering pump. Work them down into position together. If the pump is put in first the rail assembly will not fit and vice versa.

Are there any problems with the GM 3.1L V6 engine?

The only “problem” block in the 3.1L V6 engine family to watch out for was the one used in some 1988-’90 FWD cars and minivans, casting #10065459. This particular casting tended to develop cracks near the center cylinders. • Leaky Intake Manifold Gaskets.

How did the GM 3.1L engine save money?

Over the years, GM has saved a bundle on manufacturing the 3.1L engine by using the production line tooling it originally developed for the 2.8L V6. By simply changing the bore diameter, the displacement of the same engine block could now be increased for more power and torque.

What causes a leak in a GM 3.1L engine?

The 3.1L engines use a variety of different electronic EGR valves. The common problem here is a buildup of carbon under the EGR valve that prevents the valve from fully closing when EGR isn’t needed. A leaky EGR valve will act just like a vacuum leak, causing a lean fuel mixture, rough idle and misfiring.

What does it cost to have a Chevy Malibu engine hesitate?

Our certified mobile mechanics can come to you now. Chevrolet Malibu Engine hesitates during acceleration Inspection costs $89 on average. It can be frustrating for any driver to expect certain acceleration from their vehicle only to find that the vehicle seems to be hesitant while speeding up.

How to fix a leaking Chevy Malibu engine?

On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way. Disconnect the heater bypass hoses and clamp them off (or jam sharpie pens into the hoses, this works just as good as a clamp). Disconnect the thermostat by-pass pipe and remove it.

What’s the disassembly sequence on a Chevy Malibu?

As an example, the video below shows the disassembly sequence on an ‘04 Buick Century. On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way.

How to replace the intake manifold on a GM 3.1L?

3) Remove hose clamps from the two ends of the bypass hose and separate them from the metal tubing. These pieces of tubing are pressed into the intake manifold. An 8mm bolt threads into a housing by the water pump. 4) Remove the coolant overflow bottle.

How to replace the intake in a GM 3.1L engine?