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[FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START

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28 Jun 2019 11:32 #31150 by tim.smith1
[FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START was created by tim.smith1
CUSTOMER JUST PURCHASED CAR A FEW DAYS LATER HE NOTICED WHAT HE DESCRIBED AS A MISS FIRE BEFORE HE COULD ALLOW A TECHNICIAN TO LOOK AT THE CAR HE SHUT IT OFF AFTER DRIVING IT AND THE CAR WOULD NOT START BACK UP. THE CAR SHOWED UP ON A TOW TRUCK AND WE ATTEMPTED TO START IT AFTER A FEW TIMES WE SPRAYED BRAKE CLEANER IN THE INTAKE AND IT STARTED RIGHT UP. NOT A GOOD EXCUSE BUT THE ONLY ONE I HAVE WE CALLED THE CUSTOMER TO TELL HIM HE NEEDED A FUEL PUMP INSTALLED IT AND OF COURSE NO LUCK ALSO WE READ THE CODES TO FIND IT DID HAVE A P0300 IN THE MEMORY NO OTHER CODES PRESENT CHECKED FUEL PRESSURE IT WAS IN SPEC. NEXT I CHECKED THE IMMOBILIZER LIGHT ON DASH COMES ON GREEN FOR A FEW SECS AND SHUTS OFF LIKE IT SHOULD CHECKED BOTH CAM SENSORS AND SAW THAT THEY HAD ABOUT 1 AC VOLT FOR BOTH OF THEM RPM WAS SHOWING IN SCANNER AND GAUGE. NEXT I CHECKED NOID ON THE INJECTORS SEEMS THAT IS WORKING FINE. WE ALSO DID A DRY COMPRESSION CHECK ABOUT 180 PER CYLINDER WE THEN ORDERED A MAIN RELAY JUST TO BE SURE THAT WAS NOT AN ISSUE. WENT AHEAD AND TOOK THE COVERS OFF THE TIMING SO I COULD CHECK MARKS IT IS DEAD ON THERE. WE THEN REPLACED THE CRANKSHAFT SENSOR WITH NO LUCK. WE ALSO REPLACED ALL THE PLUGS IN CASE THEY WERE FUEL FOULED.TOOK THE CATS OFF STILL WONT START. LAST THING WE DID WAS CHECK THE GROUNDS AT THE PCM THEY SEEM TO BE WORKING JUST FINE.


CAR SEEMS TO BE GETTING TO MUCH FUEL PLUGS SEEM SOAKED WHEN WE TAKE THEM OUT
RECENTLY THE CAR TRYS TO START UP BUT SEEMS LIKE I AM HEARING IF BACK FIRE THRU THE INTAKE
IF YOU SPRAY THE CAR WITH BRAKE CLEANER IT WILL UNWILLINGLY START AND RUN ON ITS OWN BUT AROUND 300 RPMS SO NOT SURE YOU CAN CALL THAT RUNNING.



WHAT AM I MISSING PLEASE HELP

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28 Jun 2019 18:52 #31172 by Cheryl
Replied by Cheryl on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Are the plugs getting fouled with fuel or coolant?? What’s the coolant temp sensor reading?
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28 Jun 2019 19:06 #31175 by Tyler
Replied by Tyler on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Does the ECT agree with the IAT after sitting overnight? A skewed ECT will screw with cranking injection pulse width.

Has anyone taken a fuel sample yet? Bad gas still happens to busy gas stations. :silly: Check for water/diesel/E-85.
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28 Jun 2019 20:06 #31178 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
soaked from fuel/ect reading around outside temp

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28 Jun 2019 20:07 #31179 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
iat and ect agree

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28 Jun 2019 20:54 #31186 by Cheryl
Replied by Cheryl on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
What do they read? Plugs gapped to far? How far does spark jump on a spark tester
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28 Jun 2019 20:58 #31187 by Cheryl
Replied by Cheryl on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Like Tyler says how’s the fuel quality
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03 Jul 2019 18:12 #31365 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
fuel is good and plugs are new oe plugs i did some more test with my verus but i will need to figure out how to post them to the forum page still lost on this

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03 Jul 2019 18:13 #31366 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
also this is a cop system the coils i have checked spark on jump with a nice blue shade

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03 Jul 2019 18:34 #31368 by jreardon
Replied by jreardon on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Make sure control wire color matches to cylinder number

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03 Jul 2019 18:47 #31370 by jreardon
Replied by jreardon on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Make sure TPS is not swapped with the MAP sensor. The connector LOOKS THE SAME !

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04 Jul 2019 00:47 #31372 by jreardon
Replied by jreardon on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Is your key on barometric pressure reading correct?
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05 Jul 2019 16:38 #31427 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
this is a amp off battery and injector an coil off number 3 cylinder i hope it shows up. if i can improve image somehow please let me know
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05 Jul 2019 16:47 #31428 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
koeo pid screenshots
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05 Jul 2019 23:20 - 06 Jul 2019 00:09 #31436 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
Checked control wires for coils they look good
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Last edit: 06 Jul 2019 00:09 by tim.smith1.

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06 Jul 2019 02:51 - 06 Jul 2019 06:50 #31445 by jreardon
Replied by jreardon on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
graph your map(inHg), map(v), tps(v) rpm like this:
https://www.youtube.com/watch?v=noldvC_3qY0&feature=youtu.be&t=253

What we don't want to see is manifold pressure going above atmospheric during cranking, which indicates engine can't exhale.

If so, dry out the plugs and unscrew upstream o2 and see it'll start.

Check all injectors at common power feed with amp clamp and check that they're not shorted, they're opening, and they all look the same with proper ~1 amp ramp peaks. My thinking here is maybe the injectors are opening wetting the plugs slightly, but not opening enough due to weak magnetic field from shorted coil or power feed issue.

Also take a primary current ramp of all the ignition coils (power feed at fuse 11). It may jump gap in atmospheric conditions but it won't jump in a compression environment from weak magnetic field. This could explain why the plugs are wet. An inline spark tester here would suffice as well.
Last edit: 06 Jul 2019 06:50 by jreardon.
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06 Jul 2019 09:55 #31452 by tim.smith1
Replied by tim.smith1 on topic [FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START
If so, dry out the plugs and unscrew upstream o2 and see it'll start.


Just a reminder the cats are disconnected from the system


I will check the injectors Monday I will have to build something so I can get amp clamp on fuse

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