20 Most Recent
1999 Buick Regal Questions & Answers
Intake manifold gasket / replace
3.8L Engine
NOTE
The 3.8L (VIN K) non-supercharged engine uses a two-piece intake
manifold consisting of an upper air plenum which mounts the throttle
body and a lower intake manifold assembly which houses the fuel
injectors. The 3.8L (VIN 1) supercharged engine uses a similar lower
intake manifold. The supercharger serves as the upper manifold.
Lower Manifold
NOTE
Two bolts which fasten the lower intake manifold to the cylinder
head are accessible only after the upper intake manifold is removed.
These bolts are located in the right front and left rear corners of the
lower intake manifold. Remove the upper intake manifold to service the
lower intake.
The 3.8L (VIN 1) supercharged engine uses a manifold
similar to the 3.8L (VIN K), but the supercharger serves as the upper
manifold.
-
Disconnect the negative battery cable.
-
On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
-
Remove the upper intake manifold using the procedure above.
-
Remove the EGR outlet pipe from the intake manifold.
-
Detach the engine coolant temperature sensor wiring harness from the sensor.
-
Remove the lower intake manifold bolts and carefully lift off the manifold.
To install:
Fig. Lower intake manifold bolt torque sequence-3.8L (VIN K) engine
-
Clean all parts well with degreaser, especially the gasket seal
surfaces on the upper and lower manifold pieces and between the lower
manifold and the cylinder heads..
-
Install new gaskets to the cylinder heads and new seals to the
engine block. Carefully lower the manifold into place. Apply
thread-locking compound to the bolt threads. Make sure to install the
two hidden bolts in the lower intake manifold. Hand start all bolts,
then torque evenly to 11 ft. lbs. (15 Nm). Follow the toque sequence,
starting in the center, then working outwards in a circle.
-
Install the remaining components in the reverse order of the removal process.
Upper Intake Manifold (Plenum)
-
Disconnect the negative battery cable.
-
On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
-
Tag for identification, then remove the right side spark plug wires.
-
Disconnect the ignition wires from the fuel rail.
-
Remove the fuel rail. Please see Section 5.
-
Remove the cable bracket from the intake manifold.
-
Remove the throttle body.
NOTE
Two bolts which fasten the lower intake manifold to the cylinder
head are accessible are accessible only after the upper intake manifold
is removed. These bolts are located in the right front and left rear
corners of the lower intake manifold.
-
Remove the upper intake manifold bolts and carefully lift the upper intake manifold from the engine.
Fig. Upper intake manifold and bolt torque sequence-3.8L (VIN K) engine
To install:
-
Clean all parts well with degreaser, especially the gasket seal surfaces on the upper and lower manifold pieces.
-
Install new gaskets to the cylinder heads and new seals to the
engine block. Carefully lower the manifold into place. Make sure to
install the two hidden bolts in the lower intake manifold. Hand start
all bolts, then torque evenly to 89 inch lbs. (10 Nm). Follow the
torque sequence, starting in the center, then working outwards in a
circle.
-
Install the remaining components in the reverse order of the removal process.
While driving the abs light comes on then goes out
The only way that the ABS light could have anything to do with your stalling problem is if it is caused by a bad battery ground, Otherwise, I would begin diagnosis by collecting fault codes from both the ABS module and the Engine Control Module.
I had my mass air
It has nothing to do with the transmission and how it shift. The MAS with multiple others, sends info to the ECM, which adjusts fuel, air, and spark advance accordingly depending on too rich, too lean, etc. ALso the mas usually has a arrow on it and cant really be installed wrong. What do you mean by "pulls some" ?
My front dirvers side turn signal bulbs keep
That's usually a sign of overheating due to a poor connection. Buy a replacement socket and splice it in place using heat shrinkable tubing to keep water out. Apply a light film of dielectric grease int he socket. Then clean the ground connections. That should solve the problem
No low beam head lights on 1999buick regal
Do you know how to do basic automotive electrical testing ?
Headlamps Inoperative - Low Beams
Disconnect the headlamp switch.
Turn the headlamp dimmer switch to the LOW position.
Using a test light, frontprobe between the headlamp switch harness connector terminal D to ground.
Does the test light illuminate? YES - NO ?
2
Using a test light, probe between the headlamp switch harness connector terminal D to ground.
Does the test light illuminate?
--
YES - Go to Step 3
NO - Go to Step 4
3
Replace the headlamp switch. Refer to Headlamp Switch Replacement .
Has the repair been made?
--
Go to Headlight System Check
--
4
Repair a poor connection or an open in circuit 1750 between the headlamp switch and the harness connector terminal A and G201.
Has the repair been made?
--
Go to Headlight System Check
--
5
Reconnect the headlamp switch.
Using a test light, backprobe between connector C201 terminal A3 and ground.
Does the test light illuminate?
--
Go to Step 6
Go to Step 7
6
Repair a poor connection or an open in circuit 10 between the harness connector C201 terminal A3 and S221.
Has the repair been made?
--
Go to Headlight System Check
--
7
Using a test light, backprobe between connector C201 terminal A2 and ground.
Does the test light illuminate?
--
Go to Step 8
Go to Step 9
8
Replace the headlamp dimmer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .
Has the repair been made?
--
Go to Headlight System Check
--
9
Using a test light, backprobe between the underhood accessory wiring junction block harness connector C2 terminal F10 to ground.
Does the test light illuminate?
--
Go to Step 11
Go to Step 10
10
Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement .
Has the repair been made?
--
Go to Headlight System Check
--
11
Repair a poor connection or an open in circuit 1201 between the underhood accessory wiring junction block harness connector C2 terminal F10 and connector C201 terminal A2.
Has the repair been made?
--
Go to Headlight
How do I manually close the sunroof on a 1999 buick regal?
You have to pull the entire ceiling down. I would buy a new crank motor or get one at a junkyard. *Also makes good practice as what your in for. (Most junkyards make/let you get the parts you need yourself) Manually wouldn't work well and WILL leak cause it will move back. Mine had a bad switch. I fixed that and it works fine. Thank GOD!
Car repair
Do you have any dash lights on when you try to start is sound like a bad relay test your starter relay in your fuse panal
Not finding what you are looking for?