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Author Topic: No spark change everything but ECU  (Read 2776 times)

Offline daniel Dee

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No spark change everything but ECU
« on: April 09, 2012, 10:20:20 pm »
Moved battery to rear.
Drove around for 10 ten minutes then the
Car died in the middle of the street. No spark (based on factory tach and the motor turns over and over )

Motor cranks over fine,, I can see the cams turning.
I have changed PW, coil, CAS..  All items were tested on my car before.

update!! I now verify there is no spark.

How do you test an AEM EMS??



« Last Edit: April 10, 2012, 08:08:46 pm by daniel Dee »
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92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline John Hartman

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Re: No spark change everything but ECU
« Reply #1 on: April 10, 2012, 10:14:12 pm »
do you have fuel injector pulse?
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91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods

Offline daniel Dee

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Re: No spark change everything but ECU
« Reply #2 on: April 11, 2012, 01:08:21 am »
Can the test be done with test light probe?  
Do I need to crank the engine for this test or just turn the ignition on?
Where is the injector relay?

If no injector pulse.....Will the ignition still spark?? (AEM EMS)

I am beginning to think the problem is wire related , however I don't where to start.
« Last Edit: April 11, 2012, 01:11:36 am by daniel Dee »
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92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline daniel sanat

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Re: No spark change everything but ECU
« Reply #3 on: April 11, 2012, 07:46:25 am »
Have you checked soming as simple as a ign fuse ?
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1992 talon tsi

Offline John Hartman

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Re: No spark change everything but ECU
« Reply #4 on: April 11, 2012, 05:28:32 pm »
you will need to crank it.

you will most likely need a set of 'noid lights to test for pulse.  Tho a datalogger should be able to do it.
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91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods

Offline Brett Haviland

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Re: No spark change everything but ECU
« Reply #5 on: April 11, 2012, 08:54:45 pm »
John is correct, a normal test light will not work.  You will need the proper "noid light" to plug into the injector plug and test, and as they said before, you will have to crank the engine while watching.  A remote starter switch would be a good thing to have when doing these tests by yourself.
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I like Colts.  Turbo Colts.

Offline John Hartman

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Re: No spark change everything but ECU
« Reply #6 on: April 11, 2012, 10:22:16 pm »
you can see the noid light thru the gap between the hood and engine bay from inside.
Logged
91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods

Offline Lowell Foo

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Re: No spark change everything but ECU
« Reply #7 on: April 11, 2012, 10:58:19 pm »
Slightly off topic, but I have seen so many issues from battery relocation kits.  By the time you buy a battery box plus cutoff switch and spend all the time running heavy cables, vent tube, drilling holes in the car etc. you could almost buy one of these:

http://www.facebook.com/photo.php?fbid=378989325474905&set=o.147365198615104&type=1&permPage=1
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92 Laser AWD, 50 trim, 494whp
92 Talon AWD, 50 trim, 11.55 @ 127mph w/ 399whp.
90 Talon AWD, 11.40 @ 123 ~ 10 years ago.  Currently in storage.

Offline daniel Dee

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Re: No spark change everything but ECU
« Reply #8 on: April 11, 2012, 11:12:21 pm »
My CF B2015c battery has little cranking power left...
Hence the rear mount battery install.

My car ran for some time before it died in the middle of the street.
Can the AEM EMS help me pinball the problem?

Does the ECU kill the spark if it does not detect an injector pulse?
« Last Edit: April 11, 2012, 11:14:11 pm by daniel Dee »
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92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline Lowell Foo

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Re: No spark change everything but ECU
« Reply #9 on: April 11, 2012, 11:26:55 pm »
ECU will shut off the fuel pump if it loses the rpm signal.  Does the EMS show good battery voltage?
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92 Laser AWD, 50 trim, 494whp
92 Talon AWD, 50 trim, 11.55 @ 127mph w/ 399whp.
90 Talon AWD, 11.40 @ 123 ~ 10 years ago.  Currently in storage.

Offline daniel Dee

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Re: No spark change everything but ECU
« Reply #10 on: April 12, 2012, 12:20:29 am »
I will test it tomorrow after work.. My autometer volt gauge shows just more than 12 volts in start postion with tons of cranking power.
Bottom line is I need to get some spark going somehow.
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92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline Ryan Coft

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Re: No spark change everything but ECU
« Reply #11 on: April 12, 2012, 12:19:00 pm »
Quote from: Lowell Foo on April 11, 2012, 10:58:19 pm
Slightly off topic, but I have seen so many issues from battery relocation kits.  By the time you buy a battery box plus cutoff switch and spend all the time running heavy cables, vent tube, drilling holes in the car etc. you could almost buy one of these:

http://www.facebook.com/photo.php?fbid=378989325474905&set=o.147365198615104&type=1&permPage=1

Quoted for Truth. I did a rear conversion with an Optima redtop, was almost that much.
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Offline John Hartman

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Re: No spark change everything but ECU
« Reply #12 on: April 12, 2012, 05:23:12 pm »
I looked at the Lithium Ion batteries when I was getting my new one, but they are too pricey for this guy...
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91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods

Offline Robert Vorley

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Re: No spark change everything but ECU
« Reply #13 on: April 12, 2012, 06:51:35 pm »
Hey John, I thought you already had a Braille battery with the carbon fiber shell?  How much does it weigh? (Model?)
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1997 Eagle Talon AWD,
461 awhp, 357 tq @ 28 psi on RG's "heart-breaker" Mustang Dyno

Offline John Hartman

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Re: No spark change everything but ECU
« Reply #14 on: April 12, 2012, 09:59:21 pm »
I have a Braille, but not a LiOn one! 

and its some sorta composite, not CF.  I believe I have the 11lb one, but possibly the 15lb one.

its WAY better than the Odessy was.
Logged
91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods
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