Question about 2001 Saturn S-Series

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No spark engine turns over no trouble codes r & r'ed cam sensor r & r'ed ignition module

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Have the ignition control module tested.

Posted on Apr 22, 2010

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1 Answer

Do a 2004 Envoy SLT 4.2L have a Ignition Module?


Crankshaft position sensor,cam sensor . your vehicle should have coil on plug , a coil at each spark plug !
Ignition Coils
Each ignition coil has an ignition 1 feed and a ground. The PCM supplies an ignition control (IC) circuit. Each ignition coil contains a solid state driver module as its primary element. The powertrain control module (PCM) signals the coil driver to initiate a firing event by applying a signal to the IC circuit at the appropriate time. When the signal is removed, the coil fires the spark plug. The spark plugs are tipped with platinum for long wear and higher efficiency.
During normal operation the powertrain control module (PCM) controls all ignition functions. If either the crankshaft position (CKP) or camshaft position (CMP) sensor signal is lost, the engine will continue to run because the PCM will default to a limp home mode using the remaining sensor input. As mentioned above, each coil is internally protected against damage from excessive voltage. If one or more coils were to fail in this manner, a misfiring condition would result. Diagnostic trouble codes are available to accurately diagnose the ignition system with a scan tool.
If a crank sensor is replaced a Crankshaft Position System Variation Learn must be done and a scan tool is need to do this.

Nov 30, 2016 | 2004 GMC Envoy SLT

1 Answer

No spark on cyl 3 and 4


What engine ? 2.2 l or 2.4 L. You don't say if any codes are set. no P0303 - P0304 cylinder's 3 & 4 misfire ? or any other ? No the cam sensor wouldn't cause just two cylinders to misfire. The PCM triggers the ICM to turn on an off coil's to build up an collapse the primary voltage inducing the secondary voltage . This engine is equipped with a non-distributor ignition system called the electronic ignition (EI) system. The primary circuit of the EI system consists of the following components:
?€¢
Two separate ignition coils

?€¢
An electronic ignition control module (ICM)

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A crankshaft position (CKP) sensor

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Related connecting wires

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The ignition control (IC) portion of the powertrain control module (PCM)
Important: The camshaft position (CMP) sensor is only used for a misfire detection. It is not part of the ignition system. !
How to Test the Ignition Coils GM 2 4L Quad 4

Jan 24, 2015 | 2001 Chevrolet Cavalier

1 Answer

1991 mitsibushi mini mac has no spark at spark plugs won't start.


spark is controlled by the cam/crank position sensors and the engine immobiliser . Check that the cam shaft is turning( broken belt/chain). Check that the immobiliser is operational. run fault codes to check for other faults that will stop spark--like faulty ignition module or coil/s.

May 19, 2014 | Cars & Trucks

1 Answer

Would a ingnition have any to do with the firing


It has everything to do with the firing. Ignition system consists of the computer, the crank and cam position sensors, the coils, spark plugs, ignition control module, the ignition switch, and the associated wiring.

If you have no fire (no spark), one would start by checking if ignition switch turning on causes the coil to receive battery voltage on the coil primary wire.
Always check for trouble codes when an engine problem develops. Codes stored in memory may have clues to why it won't start. If no codes are present and no spark (no ignition), suspect a bad crank position sensor (it can be tested by a shop), or possibly a bad ignition control module (also can be tested at a parts store for free).

Jan 23, 2013 | 1999 Chevrolet Silverado 1500

3 Answers

No spark


First does the rotor turn when cranking engine?? possible timing chain is out or stripped gear..are you sure it has no spark??did you verify this with a high output spark tester ? did you spray starting fluid in the tbi unit ?

Mar 23, 2012 | 2000 Chevrolet Astro

1 Answer

91 ROADMASTER WONT START.FUEL PUMPS RUNS AND ENGINE TURNS OVER.SOUNDS LIKE SPARK RELATED PROBLEM.RECENTLY HAD IGNITION MODULE REPLACED.AND IT RAN FINE.THEN ONE DAY IT WOULDNT START CHECKED TROUBLE CODES...


usually they will not throw a code, check to see if the car is getting spark when trying to start, if not just replace crank sensor and should be fine.

Jun 08, 2011 | 1992 Buick LeSabre

1 Answer

1991 Buick Riviera w/3.8 Engine, engine cranks but doesn't fire. The ignition module was replaced w/used one. It solved the problem at the time (took me to the store & back). Next day I tried to...


Just taping up bare wire where it is exposed does not ensure that there is continuity between the connector and the damaged portion of the wires. Double check to make sure that there aren't any broken connections. Make sure that the coil packs have good connections to the module. A faulty crankshaft position sensor will keep the engine from starting. Another common problem that occurs with the ignition system of these engines is a loss of cam position sensor signal, usually because the sensor interrupter (magnet) breaks off of the cam sprocket. This condition will trigger a diagnostic trouble code 41. Here is a link to a great tutorial on how to replace the interrupter.

Feb 04, 2011 | 1991 Buick Riviera

1 Answer

1998 durango 5.2 wont turn over. changed computer,dist,crank and cam sensors,changed ignition module. no spark to coil...has ignition pulse... any ideas? thanks!


Crankshaft position sensor? Did you check for a trouble code??? I would have to say at this point there is a code stored in memory.

Nov 23, 2010 | 1998 Dodge Durango

3 Answers

The engine turnes but it wont start.


Free Auto Repair Advice by Professional Mechanics




Troubleshooting / Car Engine Cranks but Will Not Start / Engine Crank But Wont Start 2

* Why does my engine stall at idle?
* How do I change my spark plugs?
* Why does my engine stall?
* Why does the engine stall after replacing the battery?
* Why won't my engine crank over?
* How to retrieve trouble codes
* How to test fuel delivery system
* Engine cranks excessively
* Engine has excessive smoke
* Rapid ticking sounds when engine is cranked
* How to tune up your engine
* How to jump start your engine
* How to test an oxygen sensor
* How to open a car hood
* How a flywheel - flex plate works

Engine Cranks But Will Not Start

For an engine to run, you need three things to happen inside the engine, compression, fuel and ignition, without any one of these components the engine will not run. Follow the repair guide below:


Engine Configuration with Camshaft Operation

*

Compression - Engine compression caused by crankshaft rotation and pistons moving up and down inside the engine block. If the timing belt or timing chain fails it will cause the camshaft to become out of correlation with the crankshaft or allow the camshaft to stop rotating. Either of these conditions will cause the engine to lose compression and sometimes cause internal engine damage.
*

Fuel Delivery System - The fuel system includes: fuel pump, fuel injectors, pressure regulator, fuel filter and pressure lines. This system is used to supply fuel under pressure to the fuel injection system, the lack of fuel pressure or volume will cause the fuel delivery system to fail and the engine to stall or not start.
*

Ignition Spark Delivery System - The ignition system components include: spark plugs, spark plug wires, distributor (if applicable), crankshaft angle sensor, camshaft angle sensor, ignition coil, ignition module, knock sensor and PCM (engine control module). The engine relies on the ignition spark to be delivered to the combustion camber at the correct time. If the ignition spark stops or is delivered at the wrong time the engine will not run or run poorly.

If your engine cranks but does not start follow this troubleshooting guide:
* Step 1 - Anytime you have a problem with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, Air Bag) inspect all fuses using a test light and check the under hood power distribution center and under dash fuse panels. If all fuses test ok continue to the next step.
* Step 2 - To check for problems with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, Air Bag) and the fuses test ok a trouble code scan is needed to identify any system trouble. Use a simple scanner tool to retrieve trouble codes and see if they relate to the specific problem, like a crank angle sensor failure code. If the trouble code present does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the car is running. The reason we repair non-related codes after the engine is running is because sometime false codes can be triggered by the engine not running. Once the engine is running again the code present might cycle and turn itself off. You might say "if the engine doesn't run shouldn't it have a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the fuel pump fails the computer cannot detect the failure, so the engine doesn't start and the computer thinks everything is ok with no codes. If no trouble codes are present proceed to the next step.
* Step 3 - The spark plugs in your engine are used to ignite the compressed fuel air mixture. If the condition of the spark plugs are fouled by excessive fuel or carbon the engine will not start, backfire or run rough. Remove all spark plugs to inspect their condition. Please use this spark plug condition reference guide to see how the spark plugs are operating.
* Step 4 - Determine if the engine has compression, this can be done a number of ways but the most complete method is to perform a compression check. Remove the spark plugs and perform a compression test on one cylinder. If one cylinder has compression then the remaining cylinders usually will be close to the same. Crank the engine over about 5 seconds, normal compression readings should be between 125 psi and 160 psi on each cylinder. If no or little compression exists additional tests will be needed. The most common reason for an engine to lose compression is a timing belt or timing chain failure. If low or no compression exists remove the oil fill cap and observe camshaft rotation when the engine is cranked over. If no rotation exists the timing belt or chain has failed. If your engine has a timing belt and you cannot see the camshaft easily remove the upper bolts to the timing cover and gain visual access to the belt, recheck cam rotation by cranking the engine over. Sometimes a timing belt or chain can jump causing the camshaft to lose correlation with the crankshaft and therefore causing low compression. The best test for this condition is to remove the timing belt/chain cover and inspect timing marks. If the compression is ok proceed to next step.
* Step 5 - Test the ignition system output, ignition systems can vary in configuration but operate on the same principal. Ignition systems can consist of a coil, pick up coil, crank angle sensor, cam angle sensor, spark plugs, spark plug wires, distributor cap, ignition rotor and a distributor and any variations of these components. An ignition coil is a voltage stepper coil that transforms a low voltage (12 volts) signal into tens of thousands of volts needed to jump the gap of the spark plug. This coil is activated by an ignition module triggered by using the camshaft/crankshaft angle sensor; timing is adjusted by the ECM (computer).

Hope helps (remember rated and comment this).

Aug 11, 2010 | 1999 Chevrolet Blazer

2 Answers

I have a saturn 2001 sl2 and the car will not pass emission test because the test showed a code P0341 camshaft sensor the car dos'nt have a cameshaft sensor I'm leanning toward the coil or camshaf sensor...


If there is a good spark, then the crank sensor should be good, and module and packs should be fine. It may be crank sensor or ignition module. Are you getting good fuel pressure? You can go to autozone.com and register for full free online repair manual. Much better than the books.

Sep 04, 2009 | 2003 Saturn ION

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