My 1995 town car get no fire to spark plugs ,replaced crank sencer and icm still no fire thing maybe ecm not sure

OK now 2.2l told. L61 is GM name real name.
ALL FUSEs checked first(ALL)
CPS is 1990 name is NOW CMP
crank sensor is CKP
stop reading web sites on 1990 cars, they are gone .

2.2L is not at all like the Turbo with 4 cops and CMP real.

also , 303 means this.
1: bad engine, cyl 3. weak bad compression
2: bad spark.#3
3: bad injector #3 swap with 4, and see of failure follows to #4.

2.2 L ) L61 GM only.

let me read the SM service manual on your L61 engine GM.
a 2 wires CKP crank sensors, that must not be bad. or all spark ends, not just #3 ever. CKP goes only to ECM. so we skip this/


The ICM runs a super strange, Ignition coil 4 in 1.
ALL IN ONE COIL PACK, FIRES 1,3,4,2 AND VERY HARD TO TEST, IN A GIANT SANDWICH COIL PACK. (PAINFUL THIS)
the CAM sensor is part off the ICM.
(virualized synthetic)
THE STATEMENT BELOW NO MATTER HOW ODD IS HOW IT DOES A VIRTUAL CMP SENSOR.

"The ICM detects if cylinder?1 or cylinder?3 is on the compression stroke by sensing the secondary voltage and polarity of each side of the ignition coil. The higher voltage is on the compressing cylinder. This is called compression sense ignition. The ICM provides a synthesized cam signal to the ECM based on these inputs. The ECM uses the cam signal to synchronize fuel injection. This system consists of the following circuits:"

If the ECM receives an intermittent CMP signal from the ICM, DTC P0341 sets."

compression sense ignition.! <<<< learn this first
if compression is bad on #3 the ICM WILL BE CONFUSED
that is why techs, check compression first.
and no EFI on earth can run a dead engine(mech. hard failed)
for sure this one in SPADES.

most cars do not use. compression sense ignition.
and this car can not do CMP unless engine is good first. see how that matters here so much.
I hope so.

did you check ECM, you can buy them online, with istructions

Make sure the coils plugged in I've seen this way to many times. If its not that follow the path backwards. Spark plug/wire/coil/icm/crank sensor cam sensor/ ecm

Yes, the ECM is the last thing to replace after all other possibilities. No spark could be bad ignition coil, bad Ignition Control Module (controls the coil circuits for spark), bad plug wires, the crank and cam sensors (for ECM to determine spark timing).

Check the ICM -it can be tested at a parts store. If good, check the crank sensor.

Cranks but won't start? Replacing the plugs won't be the fix most likely. You are probably looking at the components that control spark. Make sure that everything is dry ( condensation is a huge factor for things like this )

If you are having this problem AFTER replacing the plugs, then you are going to want to make doubly sure that you put the wires in the proper places. Don't crank the engine over like this very long, or you will dump raw fuel into the catalytic converter and could ruin it, which will cost you more than you'd probably want to sink into that van.

Not if you got spark & injector pulse

The spark plugs and wires have nothing to do with cranking the engine. Make sure your battery is charged up and all the connections are clean. Get someone to give you a boost if necessary. If you still get nothing you may need a new starter , or possibly ignition switch. If nothing happens when you get a boost your'e probably better to let a mechanic handle it.

The crankshaft position sensor identifies position of the crankshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)

When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.

The camshaft position sensor identifies position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)

When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown

CHECK IGNITION MAIN FUSE. CODE SCAN FAULT IN THE ECM OR FAULT IN THE CKP SENSOR AND CMP SENSOR ALL THREE CONTROLS THE SPARK IGNITION TIMING AND SPARK ALSO FUEL INJECTORS TIMING AND FIRING.

We will star a list of what is good.and what controls spark
1. crank sensor .you done it
2.ignition control module. located on the center of bulkhead,behind intake air hose
3.coils. you tested it.
4.ECM located under passenger side foot well

ECM no you got fuel,so lets leave it out
cranksensor okay you replaced it
ICM ignition control moduel.
no spark you cover everthing. has to be a loose or no contact connection somewhere, you covered it all.you might want to tap on the ecm., or check the fuse for power to junction the ones in the hood area those can blow and not give power to ignition system