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1990 buick lesabre - 3.8 liter. won't start, it's not firing.Is there anyway to bypass the camshaft sensor or crankshaft sensor. And should the coil pack have 2 hot wires going to it with the ignition on or should it have 1 hot until you try to start it??

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No u cannot bypass the sensors 1 hot and 2 signal wires. test the sensors if u got no spark from any coil and the sensors are good replace the ignition controlle modgule... the coils are mounted on top of it
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Posted on Dec 10, 2008

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Where is the crankshaft position sensor on my 2010 srx 3 liters


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1 Answer

How do replace ignition control module in 1998 K-1500 5.0 liter vortec


This system does not use the ignition module used on the DI systems in the past. The VCM controller now controls the ignition control (IC) and bypass functions.
The crankshaft sensor, located in the front engine cover, is perpendicular to a target wheel attached to the crankshaft. The target wheel is equipped with slots situated 60 degrees apart. As the crankshaft rotates, the target wheel rotates past the crankshaft position sensor. The rising and falling edges created by the slots cause a signal to be sent back to the VCM. This signal occurs three times per crankshaft revolution and is referred to as the 3x signal for V6 applications. The signal occurs four times per crankshaft revolution and is referred to as the 4x signal for V8 applications.
The VCM then utilizes this 3x (V6) or 4x (V8) signal in order to provide the correct spark to the engine by way of the single coil driver module. The single coil driver module is basically an electronic switch that when commanded by the VCM, causes the primary coil voltage to breakdown, energizing the secondary coil and providing a spark via the coil wire to the distributor cap. The distributor consists of the following components:
The system consists of the following components:
?€¢
Vehicle control module (VCM)


?€¢
Distributor


?€¢
Ignition coil driver module


?€¢
Ignition coil


?€¢
Crankshaft position (CKP) sensor


Now which part do you want to replace ?

?€¢
Cap and rotor


?€¢
Camshaft position sensor


?€¢
Gear drive and shaft

The camshaft drives the distributor shaft which rotates providing a spark to the correct cylinder by way of the cap and rotor. The camshaft position (CMP) sensor functions much like the crankshaft sensor previously described but provides only a 1x signal to the VCM. That is, for every 2 rotations of the crankshaft, there is 1 rotation of the camshaft. Note that the camshaft position sensor will not affect driveability. The sole purpose of the camshaft position sensor is to provide the VCM with the necessary information for the misfire diagnostic trouble codes (DTCs).

Sep 06, 2015 | 1998 Chevrolet K1500

1 Answer

Be driving car cuts off but will start back up


well sounds like a crankshaft postion sensor or camshaft positon sensor both tell the cpu when to fire spark

May 05, 2011 | 1995 Buick LeSabre

1 Answer

Can you drive a 1994 Buick Lesabre with an unplugged camshaft sensor


If it will start, you can drive it. Some computers will not fire the injectors without a signal from the cam sensor, but many will default to data from the crankshaft sensor when the cam sensor fails. This may result in reduced fuel mileage, but will not hurt the car. Basically, the injectors are spraying at a less optimal moment. OK?

Dec 05, 2010 | 1994 Buick LeSabre

1 Answer

Belt broke and it has been replaced but now car will only turn over but it is not getting fire to crank. this is a 1992 buick lesabre


Check to make sure, that when the belt broke, it did not disconnect or damage the crankshaft sensor, sensor sit in back of Harmonic pulley, thats what give the signal to the coils to fire.

Sep 15, 2010 | 1992 Buick LeSabre

1 Answer

Does a 2002 buick regal have a ignition position sensor


Hello trhino69.

The Regal has two position sensors.
One on the crankshaft and another on the camshaft.
If the crankshaft sensor isn't reading it will not start.
On the other hand if the camshaft sensor isn't reading it will start but the fuel injectors will revert to non-sequential firing.
The crankshaft sensor is mounted at the crankshaft harmonic balancer.
It is #4 in the diagram below.

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This should answer your question.

KL

May 10, 2010 | Buick Regal Cars & Trucks

2 Answers

What order do you put the spark plug wires on the ignition coil


For the 1990 Buick LeSabre 3.8L V6:

Firing Order:
1-6-5-4-3-2

Cylinders:
.......(back)
2........4........6
1........3........5
.......(front)

Ignition Coil Connections:
........(back)
......._____
3->o|_____|o<-6
......._____
5->o|_____|o<-2
......._____
1->o|_____|o<-4
........(front)

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!


Apr 01, 2010 | 1990 Buick LeSabre

2 Answers

1990 buick century 3.3l engien,no spsrk I replaced ignition (ccci) module,crankshaft position sensor,&power control module (CPU)ohmed out weirs from crank shaft sens ok (no high res or shorts ) I do...


The check engine light should be on--rent a scanner, read out the codes, and pursue to repairs. The one sensor you didn't mention is the camshaft sensor. It is a hall effect device and depends on a magnet passing to generate triggers. It is combined with the crankshaft sensor and they work in tandem with the CPU to generate firing. Maybe the magnet came off of the camshaft? If you have access to an oscilloscope, you could look for pulses from both sensors where they go into the ignition module--terminal 'G' for the crank, and terminal 'K' for the cam signal.

Sep 11, 2009 | 1990 Buick Century

1 Answer

Where does the firing order start on a 1991 3.8 buick lesabre. 165432


There are six VIN numbers of engines for the 1991 Buick Lesabre, with a 3.8 Liter engine.

1.Vin B
2.Vin 3
3.Vin C
4.Vin 1
5.Vin L
6.Vin K

All have the Firing Order of 1-6-5-4-3-2

For Vin B and 3:
Hood open, looking at the engine from the front of the car. The coil pack is behind the engine, close to the firewall. (Under the windshield)
The crankshaft pulley is down on the left side.

Spark plug numbering, for the spark plugs close to the radiator side.
From Left; (Front of engine), going Right-> 1-3-5
Spark plug numbering, for spark plugs on the backside of the engine.
From Left going Right-> 2-4-6

The distributorless coil pack sits on the backside of the engine, close to the firewall.
Numbering of where to put the spark plug wires;
There are three spark plug towers close to the engine. From Left to Right -> 3-5-7
There are three spark plug towers far from the engine. From Left to Right-> 6-4-2

For Vin C, 1, L and K:

Hood open, facing the car.
The Front of the engine faces to the Right. The crankshaft pulley is down, and to the Right.

Spark plugs close to the radiator;
From Left to Right-> 6-4-2
Spark plugs close to firewall, (Below windshield)
From Left to Right-> 5-3-1

The distributorless coil pack sits on the right side, in front of the engine. (The Front of the engine is on the right side. The crankshaft pulley is on the Right side)

Starting at the ->Back and coming Forward. (To the Front of the car)
On the Left side of the Distributorless Coil Pack, it is -> 4-2-6
On the Right side it is -> 1-5-3

Aug 19, 2009 | 1997 Buick Skylark

1 Answer

1990 buick lesabre sputtering?


Crank posistion sensor. It's behind the pulley off the snout of the engine

Jun 20, 2009 | 1990 Buick LeSabre

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