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1999 isuzu trooper 3.5 v6 crank no spark, i have battery…

1999 isuzu trooper 3.5...

1999 isuzu trooper 3.5 v6 crank no spark, i have battery voltage, a trigger signal( a little dim), and ground is showing just over 200mv. Tested with key on whith a know good coil, im stumped.

Mechanic's Assistant: Have you tested the battery with a voltmeter? And can you see if it's leaking or not?

12.9 volts

Mechanic's Assistant: Are you fixing your Trooper yourself? What have you tried so far?

I verified the above mentioned

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Good fuel pressure and im able to communicate with computer via scan tool

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Answered in 3 minutes by:
1/18/2018
Cesar Jimenez
Category: Car
Satisfied Customers: 175
Experience: shop foreman at carmona repair
Verified

hi im cesar jimenez and i will be assisitng you today. im reviewing quesiton now......

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any codes???? also have you checked CKP??

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Customer reply replied 4 months ago
No codes, I can see certain data pods on my scan tool, such as a rpm signal, tps, ECT.

it has spark correct??

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Customer reply replied 4 months ago
Crank no spark, please read my very first post
Customer reply replied 4 months ago
I've tested the coil and found battery voltage, a trigger signal for the transistor in the coil and a ground reading just over 200mv. The trigger signal I tested with my led test light, which was a little dim
Customer reply replied 4 months ago
I'm not sure if the ground is good enough?

what was trigger reading??

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Customer reply replied 4 months ago
All I have is a dvm and led test light.
Customer reply replied 4 months ago
My led flashes on the trigger wire from ecm

ok thats good. its only a 5V reference voltage

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check ignition coil fuse, engine fuse, and PCM fuse

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Customer reply replied 4 months ago
Verified all fuses good, coil has battery voltage, and a good ground, and a trigger signal, maybe these coils aren't compatable. These are 2001 one ignition coils and the vehicle is a 1999, whatcha think? I thought because they were 3 wire coils they would work.

they should all be the same

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Customer reply replied 4 months ago
I noticed the 2001 isuzu troopers use a ignition module on top of intake manifold, the 99 doesn't have that.Are there different transistor type coils, for the trooper.

im reviewing now..

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sorry the coils are different 2000-2004

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Customer reply replied 4 months ago
that means there not comparable right,lol
Customer reply replied 4 months ago
Compatable I mean,lol
Customer reply replied 4 months ago
that makes more sense because everything voltage and ground wise is present, they changed the design on these coils apparenty,

yes the coil is totally different

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all the coils are 2001??

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Customer reply replied 4 months ago
Yeah unfortunatel, this was a engine swap from a 2001

and the old coils??

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you have to put the 99 coils in.

the 2000 and up igntion system runs with a ion sensing module and and ignition module. that uses the CKP for signal.

the 98-99 the PCM sends the signal to coils

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Customer reply replied 4 months ago
Ah, okay thanks. How do I give you a thumbs up? I really appreciate your help.
The stars on top of the page
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Thank you also
Cesar Jimenez
Category: Car
Satisfied Customers: 175
Experience: shop foreman at carmona repair
Verified
Cesar Jimenez and 87 other Car Specialists are ready to help you
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Cesar Jimenez
Cesar Jimenez
Cesar Jimenez
Category: Car
Satisfied Customers: 175
175 Satisfied Customers
Experience: shop foreman at carmona repair

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