Question about 1997 Audi A4

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Crank and no start

#2 coil not getting signal

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Chec the crank and cam sensors

Posted on Feb 23, 2009

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russet327
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SOURCE: 1996 Jeep Grand Cherokee No Start

I would be thinking that there is a good chance that you need to be checking out replacing the computer, if you aren't getting any communication with the proper scan tool then the computer isn't communicating with anything in the vehicle...... I would have guessed first off that the ignition control module might be bad but that is obviously part of the computer also, I would be looking in that direction.

Posted on Sep 19, 2009

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Mitsubishi endeavor 2004 coil pack burnt out changed and turns over but no start spark plugs wet from fuel but not starting


There are so many possibilities, fuse, command module, crank signal? Is the module getting 12 volts. It is rarely a whole ignition coil pack goes out unless of a short. Was the unit burned up? If not, it could have a bad crank position signal. The cam sensor is mainly for fuel and crank sensor is mainly for spark.

Feb 09, 2016 | Mitsubishi Cars & Trucks

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1989 Chevy 2500 pickup. Two months ago I was driving and truck just died. After it cooled off it would crank for maybe 5 seconds then would not crank. Replaced plugs, wires, cap, rotor, and coil. Still...


You can have the coil and module tested at most auto parts stores. The module provides the ground signal to the coil. It could also be the pickup coil in the bottom of the distributor.

Jul 15, 2013 | Cars & Trucks

1 Answer

1999 volkswagon jetta v6 cranks but wont start


I'm having a similar issue with my '97 Golf K2 with a 2.0 I checked the resistance to the crank sensor and it was almost 900ohms with the replacement one being 500 ohms. Changed it, didn't work.


Mine was running fine driving 70MPH on the highway and just shut off. Now it cranks, fuel pump runs and it seems to be getting fuel but still no spark. I have a coil/module on order and will try it tomorrow.


UPDATE

Replaced the coil. Coil sparks once when you first turn the key on, that's it. crank sensor has already been replaced yesterday.
Injectors seem to fire (I smell fuel if I crank it a while) but still no spark.
I have 12V to the coil and 12V when cranking.

I see tons of posts with this issue but no resolutions. Come on somebody has to have been here before....

UPDATE #2

I do NOT have an injector pulse or a pulsed signal to the coil. When I crank the car the oil pressure light blinks on and off (just noticed this not sure if it is relevant)

I do get a check engine light when I turn the key on and when cranking, thought this meant ECU was good?

Any other way to test the ECU?

Could the pick up in the distributor be bad? Doesn't the pick up signal the ECU to fire the coil and injectors, I thought the crank sensor was just a TDC reference point?

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Mar 15, 2013 | Cars & Trucks

1 Answer

Replaced coils and car started. Then it just stops and wont start again


Check for spark, if no spark, check to see if you have rpm signal. if no signal that look at the crank sensor. crank sensor will give you a no spark, so will an ignition control module, the crank sensor is by the crank pulley, the control module is under your coils.

Oct 24, 2010 | 1998 Pontiac Bonneville

1 Answer

1990 jeep 4.2 no spark power 2 coil but no spark out of coil also have added a fuel injection,its a howel system get this a day later i go out and it starts right up wow what could it be


It is most likely the module inside of the distributor, and if you put a test light on the Neg. (-) side only of the ignition coil and crank the engine over you should see the test light pulse or blink off and on indicating that there is a dwell signal.

The dwell signal tells the ignition coil when to fire, and if there is no dwell signal then the problem is in the distributor, and if there is a dwell signal then the problem is with the ignition coil.

Jun 09, 2010 | 1990 Jeep Wrangler

1 Answer

My car is not getting any spark from the coil


T COULD BE YOUR CAMSHAFT SENSOR OR CRANKSHAFT SENSOR. SOMETIMESTHE TIMING CHAIN JUMPS A TOOTH AND CAUSES THIS TO HAPPEN ASWELL.

1. At the coils, check for battery voltage at the Red wires while cranking, the Black wires should be less than 0.05 volts while cranking. Pin 3 at the coils (each wire color at the #3 pin are different) using a scope watch for a 3 - 4 volt pulse signal while cranking. Red wire - battery voltage, Black wire is a ground and the White wire is the signal circuit

2. If there is no pulse signal to the power transistors, using a scanner check the POS counts (Position) should be 179 - 181 while cranking. If inconsistent, check the signal plate (flywheel/flex plate) for damaged teeth. If there is an RPM signal and the POS counts are correct, this crankshaft sensor is good.

3. On the front of the engine, mounted on the oil pan is the crankshaft sensor (REF) reference. Check the AC voltage while cranking, should be a clean sine wave that indicates the Top Dead Center (TDC) position of each piston. White and Black wires in a 2 pin connector

4. Check the Camshaft (phase) sensor AC voltage output. This sensor should also be a clean sine wave. This sensor detects cylinder number. This sensor is located in the front cover facing the cam gear. White and Black wires in a 2 pin connector.

Nov 07, 2009 | 1995 Nissan Maxima

1 Answer

1999 mitsubishi eclipse 2.0L na. no start. will crank. no power to coil pack. no codes. cam and crank sensor replaced. still no start or spark.


On this model engine, the power to the coil pack is delivered directly from the power transistors located inside the PCM.
If you are not getting the signal to fire going into the coil, verify you are getting a good waveform from the crank angle sensor, and that the wiring from it to the PCM is intact. If the crank sensor is delivering signal to the PCM, and the PCM is not generating pulse via the internal power transistors, the PCM has failed (the power transistors blow open, it is fairly common on this Chrysler PCM).

Oct 30, 2009 | 1999 Mitsubishi Eclipse

2 Answers

1996 Jeep Grand Cherokee No Start


I would be thinking that there is a good chance that you need to be checking out replacing the computer, if you aren't getting any communication with the proper scan tool then the computer isn't communicating with anything in the vehicle...... I would have guessed first off that the ignition control module might be bad but that is obviously part of the computer also, I would be looking in that direction.

Sep 19, 2009 | 1996 Jeep Grand Cherokee

1 Answer

NO Start the truck is not getting spark the coil is good but i'm not getting any power to the coil and I need to know if i'm testing it right i'm thinking it is the ignition


THE POWER TO THE IGNITION COIL COMES FROM THE AUTO SHUT DOWN RELAY..THE AUTO SHUT DOWN RELAY IS GROUNDED BY THE POWERTRAIN CONTROLLER WHEN IT SEES CAM AND CRANK SIGNALS..WHEN CRANKING..HOLD YOUR TEST LIGHT ON DG/OR WIRE AT COIL AND HAVE SOMEONE JUST TURN KEY ON..YOU SHOULD GET POWER FOR 2-3 SECONDS..IF IT DOES,THE CIRCUIT TO THE COIL IS OK..CHECK ALL FUSES..FUSE 9 IN JUNCTION BLOCK INSIDE TRUCK,FUSE 3 IN UNDERHOOD FUSE/RELAY CENTER..CHECK FOR ANY FAULT CODES IN PCM..YOU MOST LIKELY HAVE A FAULTY CAM OR CRANK SENSOR..CAN BE MONITORED WHILE CRANKING ENGINE WITH A SCAN TOOL HOOKED UP..LET ME KNOW WHAT YOU FIND

Jun 03, 2009 | 1998 Dodge Dakota

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