Question about 1994 Chevrolet Cavalier

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1994 2.2 calvalier. has fuel , has spark, replaced the crankshaft position sensor will not fire at all and what should the compression be?

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A nomal reading would be about 150-170psi. More importantly the readings should be within 10% of all other cylinders.

Posted on Apr 28, 2010

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My 1994 buick lesabre won't start will turn over,


Is the Check engine light on ? Does it have spark at the coils ? Is it getting fuel to the injectors ? Does the engine have compression ? What engine does it have 3.1 L - 3.4 L 3.8 L All these engines are good for timing chains an gears wearing out an jumping time , especially if you never had it replaced at 75,000 miles ! If no spark could have a bad ignition module , crankshaft position sensors .No fuel pressure , bad fuel pump , fuel pump relay ! No Start Diagnosis FASTTEC Method Pt1

Jul 16, 2015 | Buick Cars & Trucks

1 Answer

2004 Pontiac Vibe I replace the crankshaft also the bearings I wasn't getting any spark I then replaced the crankshaft position sensor now I have spark and gas but no start


You need 3 things to make an engine run.....fuel, spark, and compression. and they also have to happen in the right order at the right time. If you are sure that you have spark and fuel then run a compression check on all cylinders and double check your timing marks.

May 19, 2015 | Pontiac Cars & Trucks

3 Answers

Went to work one morning and going home after work and car will not start getting fuel pressure and spark.


replace crankshaft positon sensor or cam shaft postion sensor they control in what order to fire the spark common issues when a crank postion sensor fails is non start situations


if it helps at all l please leave a good review

May 09, 2011 | 1999 Volkswagen Cabrio

2 Answers

Cranks but does not fire. put gas into intake still no start.


First off check and verify you have sufficient fuel pressure with a fuel gauge if the fuel pressure is good next verify you have spark remove one of the sparkplugs and instert a spark tester into the sparkplug wire and crank the engine around and observe that there is spark, if theres spark remove all spark plugs and perform a compression test the compression should be no lower then 180 PSI for that engine, next if theres no spark unplug the 4 wire connector from the coil pack and with an ohm meter ohm across the purple and yellow wire the resistance of the crankshaft position sensor should be between 700 and 900 OHMs if its not replace the crankshaft posistion sensor its located behind the engine in back of the starter, if you dont have fuel pressure check the fuel pump relay and fuse, if they both are okay then the pump is probably bad and you will have to drop the gas tank to access the pump.

Dec 07, 2010 | 1998 Saturn SW

2 Answers

I am having problems with my 1994 gallant, just changed the distributor and the timing belt now only my number 1 plug is firing and it tries to turn over but wont cuz the other plugs are not firing....what...


ok....when you talk about firing, do you mean that only the number 1 cylinder is receiving a spark from the distributor, as with this model, the "timing of the spark and operation of the spark is purely in the distributor, so unless you are 100 % sure that the distributor you replaced is good....i would be loooking at possible engine ecu......(there is no crankshaft position sensors or cam sensors in this model)

However, if you have only found that "firing" means the cylinder 1 is the only one attempting to fire, such as good spark, at the right time, with fuel and good compression, i would be doing a compression check, and double check the timing of the distributor.......

Dec 02, 2010 | 1994 Mitsubishi Galant

1 Answer

I needto know how to replace a Crankshaft postion sensor A circuit


      • The sensor is mounted in a fixed position in the engine block. The tip of the sensor protrudes into the crankcase at a distance of 0.05 plus or minus 0.02 inch from the crankshaft.
      • A crankshaft adjusting tool may be used to check these rings
      place the tool on the pulley extension surface and rotate the tool around the pulley.
    • If any blade touches the tool, replace the pulley.
  • Inspect the trigger wheel behind the crankshaft pulley and the sensor for damage.
  • If the engine misfires all the time or on acceleration only, test the following components:
    • Engine compression.
    • Spark plugs.
    • Spark plug wires.
    • Ignition coils test for firing voltage with a test spark plug.
    • Crankshaft sensor.
    • Fuel injectors on multiport and sequential fuel injection systems. To remove the crank sensor
  • Disconnect the wiring harness.
  • Unbolt the sensor mounting bolt.
If the crankshaft timing sensor or the camshaft reference sensor is removed, follow this procedure when the sensor is replaced:
  • Thoroughly clean the sensor tip and install a new spacer on the sensor tip. New sensors should be supplied with the spacer installed.
fr_24.15.gifSpacer on crankshaft timing sensor and camshaft position sensor.
  • Install the sensor until the spacer lightly touches the sensor ring, and tighten the sensor mounting bolt 105 in.lb.
hope this was what you needed.....

Jun 03, 2010 | 2000 Saturn Ls 4dr Sedan

2 Answers

Where is the crank sensor on my 1999 Infinity QX4



http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?itemIdentifier=229550_0_0_&skuDescription=Duralast+/+Crankshaft+Position+Sensor&brandName=Duralast&displayName=Crankshaft+Position+Sensor&categoryNValue=15199999&sortType=&store=1396&isSearchByPartNumber=false&fromWhere=&fromString=search&counter=0&itemId=111-0&navValue=15100111&filterByKeyWord=crank+sensor&productId=229550&searchText=crank+sensor&categoryDisplayName=Internal+Engine&parentId=51-0

it will be on the engine casing by the front crank pully or in the middle of the engine block on one side or the other.

it has two wire connector and will not be hard to find.

they are very easy to replace.

autozone stocks these .
you may want to check the pricing at o reillys also in your area.

allways a pleasure to help
keep me posted
sincerely
jm

Mar 22, 2010 | Infiniti QX4 Cars & Trucks

1 Answer

Motor won't start


You need 3 things for a start condition 1 spark 2 fuel 3 compression. If you have lost spark and have changed wires and coil then you should look at the crankshaft position sensor. This sensor tells the computer when to fire the coil and which plug to fire. Hope this helps. I will check back on the 14th.

May 14, 2009 | 1990 Jeep Wrangler

1 Answer

Timing the cams and crank with a belt


  1. Note: Electronic Ignition engine timing is entirely controlled by the PCM. Electronic Ignition engine timing is NOT adjustable. Do not attempt to check base timing. You will receive false readings.

The CKP sensor is used to indicate crankshaft position and speed by sensing a missing tooth on a pulse wheel mounted to the crankshaft. The CMP sensor is used by the COP Integrated EI System to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
  1. The PCM uses the CKP signal to calculate a spark target and then fires the coil pack(s) to that target shown in Figure 51. The PCM uses the CMP sensor not shown in Figure 51 on COP Integrated EI Systems to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
  1. The coils and coil packs receive their signal from the PCM to fire at a calculated spark target. Each coil within the pack fires two spark plugs at the same time. The plugs are paired so that as one fires during the compression stroke the other fires during the exhaust stroke. The next time the coil is fired the situation is reversed. The COP system fires only one spark plug per coil and only on the compression stroke.

    The PCM acts as an electronic switch to ground in the coil primary circuit. When the switch is closed, battery positive voltage (B+) applied to the coil primary circuit builds a magnetic field around the primary coil. When the switch opens, the power is interrupted and the primary field collapses inducing the high voltage in the secondary coil windings and the spark plug is fired. A kickback voltage spike occurs when the primary field collapses. The PCM uses this voltage spike to generate an Ignition Diagnostic Monitor (IDM) signal. IDM communicates information by pulsewidth modulation in the PCM.
  1. The PCM processes the CKP signal and uses it to drive the tachometer as the Clean Tach Out (CTO) signal.

2.5L V6

The ignition system consists of an ignition coil, spark plug wires and spark plugs.
The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by a pulse former within the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
Ignition timing is determined by the powertrain control module in response to engine operating conditions based on stored data tables or maps. Once ignition timing has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 5, cylinders 4 and 3 and cylinders 2 and 6) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This ensures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
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2.0L 4 cynder

The ignition system consists of an ignition coil, spark plug wires and spark plugs.
The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
Ignition angle is determined by the powertrain control module in response to engine operating conditions. Once ignition angle has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 4 and cylinders 3 and 2) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This make sures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
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Integrated Electronic Ignition System The Integrated Electronic Ignition (EI) System consists of a crankshaft position (CKP) sensor, coil pack(s), connecting wiring, and PCM. The Coil On Plug (COP) Integrated EI System uses a separate coil for each spark plug and each coil is mounted directly onto the plug. The COP Integrated EI System eliminates the need for spark plug wires but does require input from the camshaft position (CMP) sensor.
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Apr 05, 2009 | 1998 Ford Contour

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