2.2 Ecotec Crank no Start no Spark
I have a 2000 Saturn LS1 Base 2.2 4cl
Intermittent Crank no start turned to permanent Crank no start, I have no spark.
Plugs are wet with fuel. If have checked all the fuses.
I flipped the entire coil housing over connected the plugs, grounding the threaded parts to the engine, cranked it no plugs fired.
I do hear the fuel pump working. I removed the fuel valve stem and collected gas for a quality check cycling the key, strong flow clean gas.
I have changed limited inexpensive parts, Crank position sensor MAP sensor and the Ignition control module.
Climate is mild here all connections/contact points seem very good, I unplugged the BCM checked pins and the circuit board no apparent problems, no visible problems at the PCM therefore I did not disconnect it.
I tested for compression all four cylinders have a reading of just over 100 lbs
I had previously attempted to video record the dash lights during no start, but it started. Video from the actual start shows no changes in the cluster lighting from a start to this no start condition.
Only the 6 cylinder model from this year has the security lock feature.
After reviewing many videos I believe this car should at least spark without computer control even if it dies immediately ? It does not.
Irrelevant history: Previously I did need and change a burned up 02 sensor, I did start receiving an Air Bag light that seems to go off jiggling the seat wires. Stereo and stereo fuses have been removed
What do I do next? I have a led test light and a standard volt ohm meter.
I am consulting with you guys prior to taking it to a mechanic.
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imgur.com/a/zzKj6DN
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Update, this probably never happens only to me but I will find this Key, and I will perform this test.
I promise. then ill be back
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"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
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Doesn't hurt to check anyway - test light to bat+ and on an injector control wire while cranking.
Confirm power and grounds to ignition module:
1.) voltage drop while cranking (dc meter to bat+ and pink wire at ICM; close to 0 volts reading is ideal while cranking)
2.) substituted load test with headlight bulb(s) (ICM fed by 10a fuse so something around that amperage) between pink and black wire at ICM. Brightness should be same if you connect this load straight to battery terminals. If you do this test with a proper load, then #1 and #3 can be skipped.
3.) test light to battery negative, touch on black wire, crank engine (test light lights = bad ground)
However no coil control suggests a bad ICM. You tested for coil control without the coils attached so the ICM should have had enough juice to at least switch a transistor to ground. Seems like a bad ICM.
But you already put in a new ICM. Maybe the coil primary is shorted and killed the coil driver. Did it come out of the box bad, or did it turn bad when you installed it I don't know.
Check coil primary circuit ohms. It should be low ohms, but not 0. I don't have the specs for this.
Side note this has nothing to do with no control from ICM and no spark but your compression readings: look at the compression for the other displacement engines lol.
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They are relatively the same across the board tho.
So I will proceed with the test you have laid out.
Thank You
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And I now know the cause of the Airbag Light. (not related)
He then suggested a new or used coil pack.
I will purchase the coil pack thru the mail and post the results.
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- robert.lesaca
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1. KOEO, Test Light to ground; disconnect coil harness and you will see 4 pins that i will call ABCD with A the left most pin and D the right most pin;
2. touch pins and the pin that lites TL is feed. this is pin B. this feed is common to both coils;
3. connect TL to batt (+), KOEC, touch pin A and C and TL should flash; this are the control wires;
- what ever pin that does not flash will be the faulty defective driver
4. do a coil resistance test, KOEO, ohmmeter red lead to pin B (power feed) and black lead on both pin A and C; reading shld be 1-2 ohms average.
i use to own a 2001 LS 200 Saturn and these engines are notorious for jump timing chain and faulty coil...good lick
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After putting it in a relatively high end mechanic service as a Crank no start 'intermittent' (cranking verified by the tow driver) I received a call.
I was told the module was replaced and the car started right up.
However the starter is now bad.
A No Crank, Start condition, lol.
The bill was $750 due if I wanted the repairs completed.
I paid it Tuesday 2:pm it is Thursday after 5 pm no call yet.
My two weeks of experience tells me he did add another module only the car started 'Intermittently' however he believed he had fixed it.
When time came perhaps to move it out of the garage it was back to a crank no start.
At that point the Starter was warn out attempting start the car again.
I certainly plan on letting you guys know who this pans out.
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I received a call it was ready today (Wed) it started and ran great, one time.
I'd made a stop two blocks away, there the starter crashed.
They have it now. If I don't comment further they fixed that again.
Long as they do it seems worth it unless I'm looking at the itemized list.
I was charged with an ECM, Coil Pack, New Starter, Computer Diagnostics, Labor, Towing and Hazardous Materials Disposal.
$738.10
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