Question about 2003 Chrysler PT Cruiser

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No Spark I have replaced the spark plugs, spark plug wires, coil and ASD relay. Still no spark. The fuel pump relay is working. The shop manual says the PCM will energize the ADS and fuel relays once it receives the camshaft and crankshaft position sensors signals. I have replace both of these sensors. I have power at the coil.

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The relay for the fuel pump is working but have you checked that the pump is actually pressurising the system . Next you have power at the coil but is it getting to the spark plugs from the distributor.

Posted on Feb 16, 2014


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Posted on Jan 02, 2017

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SOURCE: Car won't start. There is no spark at the plugs. I

check your fuses if they are all good ,check all the ground wires on the engine make sure they are all making good connections,and if still not starting then its a very good chance that your PCM (computer) is bad. you can buy a used one for little money at a salvage yard.

Posted on Jan 29, 2010

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I have a 2002 Chrysler town and country. I have replaced the fuel pump, fuel filter, coil pack, plugs and wires but still won't start. any ideas on what to check next?

I saw what you replaced. What testing have done? Generally, if it cranks good but won't start, have a helper crank it while you check for spark at the plugs, if spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse. If your missing everything, I'd check for rpm signal. A lot of Chrysler makes and models, the computer has to see proper signal from cam and crank sensors or it won't ground the asd relay. The asd relay supplies voltage to several systems, including ignition coil and fuel injectors. Engine cranking, do you have primary voltage to those two components? Use a test light. Any applicable trouble codes?

Sep 04, 2017 | Chrysler Cars & Trucks

1 Answer

Engin turns over fine but no spark

Check the ASD relay , do you hear the fuel pump run ? The ASD relay supply's power to fuel pump , ignition system , O2 sensor heater circuits . Does your Durango have coil on plug ignition system ?

Oct 27, 2015 | 2000 Dodge Durango

1 Answer

My dodge neon 2002 has no power to coil pack

Check to see if there is power to the injectors. They are fed from the same fuse and relay. If there is no fuel pressure than the fuse would be the fist suspect sin the ASD and fuel pump relay are fed off the same fuse. The fuse is fuse 21 in the power distribution center.

If the fuse is good try swapping the ASD relay with another relay in the fuse block that is the same. If you know have spark than replace the ASD relay.

Apr 24, 2014 | Dodge Neon Cars & Trucks

1 Answer

1999 Playmouth 4 cylinder will start after several tries. have new fuel pump, fuel filter, spark plugs and wires, checked ignition coil pack and connections and ASD and fuel pump relays. Everything checks...

I see you replaced the fuel pump , spark plugs an wires , fuel fliter an checked ignition coil pack , Connections ,ASD relay . And everything checks OK ?????? How did you check these thing's ? Testing electrical circuits with a DVOM - digital volt ohm meter ? Fuel pressure testing the fuel pump before replacing ? Does the vehicle have spark ? How about hooking up a scan tool that can view engine sensor data .A bad coolant temp sensor could cause hard starting. Did you check the dark blue with yellow trace wire at the PCM connector 2 pin 67 . This is the PCM control side of the ASD relay . Do you know how a relay works ? how to test at the relay base ? where in plugs into.
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Jun 01, 2017 | Plymouth Neon Cars & Trucks

1 Answer

No Spark

Is the PCM controlling the coil's ? You have B+ voltage at the dark green with orange trace wire at the coil pack ? The other two wire's go to the PCM - the PCM has transistor's that supply a ground to those two wire's when signal from crank sensor is seen . Opens an closes to build up voltage an to release a spark . You can test this control with a test light . Video's on youtube.

Nov 25, 2017 | 2003 Chrysler PT Cruiser

1 Answer

I have a 1993 Plymouth voyager van (3.0v6 3-speed auto) with 185K. Engine cranks but no start. Fuel pump is not energizing at the run position on the ignition. 12 volts showing at the blue wire along...

have the vehicle scanned while cranking to see if there is a crank position sensor signal (CKP). this tells the ECM that the engine is turning and timing for the spark plugs. If the Brain box doesn't know this then the ASD circuit is tripped and stops fuel and spark. relatives with a dynasty had a crank sensor wire severed from running over something and didn't mention it.

Sep 06, 2013 | Plymouth Cars & Trucks

1 Answer

1996 dodge ram 1500 i have fuel but no spark after the coil pack

You have fuel,As long as you can hear the pump come on this is a good sign,the ASD relay works, The ASD relay power the fuel pump the injector the power to the coil,The primary signal for spark is the crank sensor the location is behind passenger side cylinder head its is a three wire connection.This is your solution

Mar 08, 2012 | Dodge Ram 1500 Cars & Trucks

2 Answers

95 z28 cranks but wont start what do i look for

Items to check out: Battery and battery cables (Load test battery and make sure cables are clean and tight especially the B+ cable off the starter).
Listen to the cranking speed of the starter. Does it sound normal or slow? Depending on what you hear you may want to do a starter current draw test or have a shop do it for you.

If all of the above are a-ok then move onto fuel and ignition checks.
When you put the key into the ignition and turn it to on position do you hear the fuel pump buzz?
No buzzing sound ... you could have either a bad fuel
pump or relay. To test the relay use the shop manual .But you can use a jumper wire to jump the B+ terminal off the relay to the pump motor terminal off the relay and see if the pump runs. Before you do this make sure there is B+ off the relay B+ terminal. If the pump doesn't run, the pump is your problem. To verify the relay works there has got to be B+ going into the relay and coming out of it to juice up the pump. Use a voltmeter to verify this. Good luck

Unscrew a spark plug attach it to its wire and ground its electrode . Crank engine and look for spark. Or use a spark tester.
No spark! Now check plug wires and coil. How? Use shop manual for correct testing procedure .
If no spark is found coming from the coil then check B+ coming from battery to coil and ignition module. And check the ignition module. REMEMBER IF YOUR GETTING SPARK, THERE IS NO NEED TO TEST THE MODULE.
Lastly not likely , ignition switch should not be left out of the equation. Your gonna need the shop manual for that test procedure. Good luck

Apr 21, 2010 | 1995 Chevrolet Camaro

1 Answer

1995 Ram 1500. Just died? No votage to coil, no spark?

The power supplied to the fuel pump, ignition coil, fuel injectors and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD):
The ASD relay is closed (allowing power to flow through it) when the ignition is first turned on. If the signal from the ignition reference is lost while the engine is running, the logic module cuts power to the ASD, which in turn removes power from the fuel pump,ignition coil, injectors and those parts of the power module.  This causes the engine to shut down.

Failure of the automatic shutdown relay is often shown as inexplicable stalling or refusal to start. The ASD can be triggered by a broken wire or short in another place, e.g. the fuel pump.  Hope this helps, and did you try to retrieve any DTC codes?? Be glad to help friend.

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1 Answer

1994 Plymouth Grand Voyager 3.8 eng won't start

Check primary voltage at ignition coil and fuel injectors, engine cranking, use a test lite, dark green wire with orange tracer. If no voltage, that comes from asd relay. Some makes and models if the computer doesn't see the cam and crank sensor signals, the computer won't ground the relay.
You need to do some testing.

Mar 18, 2017 | 1994 Plymouth Grand Voyager

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