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rebeltaz |
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rebeltaz Renault 5 Driver
Joined: 02 Jul 2005 Karma :
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Posted: 20:27 - 22 Nov 2021 Post subject: GZ250 - No Spark - At Wit's End - PLEASE HELP! |
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So, I've got a Suzuki GZ250 in here that has no spark. The customer has completely screwed up the wiring, lost the original switch, installed the wrong switch, fried the pickup coil and possibly the ECU.
I replaced the pickup coil and now get 5+v on the blue and green wires at the ECU connector. I have tested that the ignition coil reads as per the manual and that it will generate spark when excited externally (using a pulse generator I built specifically to test coils). The odd thing is that, even though every wire ohms out pin to pin, the o/y wire - which should be grounded - rises to about 20ohms when power is applied to the switch (which I am manually jumping as per the wiring diagram). Also, even though the battery stays at 11-12v when you spin the starter over, the o/w wire - which should be tied directly to positive voltage - drops to about 8v before jumping back up to about 10v when the starter is spinning. To combat this, I cut those wires and tied them directly to ground and positive respectively. Still no spark.
I bought an ECU on eBay and the guy claims to have checked it prior to sending it out. He also said that there is supposed to be a 100ohm resistor between the b/w (ground) and o/y (ECU signal/reference(?) ground) as a kind of anti-theft / can't hot-wire it measure. I tried that and still no spark.
I am at my wits end. Can someone, anyone help here? ____________________ Derek Tombrello
www.ShelbyCycle.com (for profit)
www.RobotsAndComputers.com (just for fun) |
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jaffa90 |
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jaffa90 World Chat Champion
Joined: 06 Apr 2016 Karma :
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Posted: 22:20 - 22 Nov 2021 Post subject: |
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rebeltaz |
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rebeltaz Renault 5 Driver
Joined: 02 Jul 2005 Karma :
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Posted: 00:32 - 23 Nov 2021 Post subject: |
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Looks like a similar problem, but I didn't see a resolution. As for the wiring diagram, I have the service manual. That's where I'm getting the specs to check voltages and resistance. Sadly, in this one case, it ain't helping. ____________________ Derek Tombrello
www.ShelbyCycle.com (for profit)
www.RobotsAndComputers.com (just for fun) |
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Islander |
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Islander World Chat Champion
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rebeltaz |
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rebeltaz Renault 5 Driver
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Islander |
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Islander World Chat Champion
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rebeltaz |
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rebeltaz Renault 5 Driver
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Islander |
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Islander World Chat Champion
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rebeltaz |
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rebeltaz Renault 5 Driver
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Old Thread Alert!
The last post was made 2 years, 105 days ago. Instead of replying here, would creating a new thread be more useful? |
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