No fuel and no spark after diconect and reconect of battery?

[ablast]

Hi guys,
I have a problem that I'm sure others here have had and hoping someone can steer me in the right direction
I have a 1997 GQ Patrol ST 4.2 Petrol engine, duel fuel and it is fuel injected.

I just replaced the battery tray as it was a bit worse for wear. I simply disconnected the battery, replaced the tray (no welding just self drilling screws making sure all was clear before screws). Reconnected the battery and now the engine turns over but I have no spark. checked every fuse, every relay. Rotor Button turns and it was running beautifully prior to the battery disconnect. Now it just doesn't fire? :animierte-smilies-f

Cheers
ablast

[outback]

Ok sounds silly, but did you clean the battery terminals etc. Also is the points gap correct and no build up due to point sparking?

[ablast]

97 GQ
EFI, Electronic ignition.
Motor turns over like a champ.
Just won't start, no spark at the plugs but power to the coil.
Battery conections and conecting wires are spotless.
Tomorrow I'll replace the coil, if that doesn't work I'll replace the module and if that doesn't work I guesd I'll have to take it to a mechanic. The fusable link is fine.
If all my efforts fail I'll have to take it to another mechanic to check the Computer.

[ablast]

Can anyone tell me where the conection for a Code Reader/Scanner is on a 1997 GQ. On most vehicles it comes put of the back of the drivers instrument panel somewhere. I can't find it to connect the reader.

[ablast]

Always clean electronic parts. The troll turns over fine, there is power to the low tension leads to the coil and no power put of the coil. Tested with a brand new coil and still no power out of coil. If the injectors don't prime the computer won't allow spark. There is also a module for the coil.

[dom14]

Hi guys,
I have a problem that I'm sure others here have had and hoping someone can steer me in the right direction
I have a 1997 GQ Patrol ST 4.2 Petrol engine, duel fuel and it is fuel injected.

I just replaced the battery tray as it was a bit worse for wear. I simply disconnected the battery, replaced the tray (no welding just self drilling screws making sure all was clear before screws). Reconnected the battery and now the engine turns over but I have no spark. checked every fuse, every relay. Rotor Button turns and it was running beautifully prior to the battery disconnect. Now it just doesn't fire? :animierte-smilies-f

Cheers
ablast

This may sound silly, but,
Have you checked all the fuses inside and outside?
You may have accidentally blown a fuse or two.
Also make sure none of the positive lines that come out of the battery line has become loose or disconnected while you're were undoing the
battery terminals. Check the main distribution board/plugs just under the battery positive terminal.

[ablast]

Well, after much frustration and deliberation I just paked my baby up untill I could afford to take it to a auto elec. He found one problem in the first ten minutes. A wire from the battery had broken inside the insulation. That didn't solve the problem. After another two hours of tracing and testing every wire he found the offending party. A wire had rubbed through from vibration due to it not being put back behind a tab. Everything would test fine but the vibration when trying to start would cause a short. That's what happens when people help you and don't put things back exactly as they should be. $200.00 and I'm happy to be back on the road. Thanks to all who tried to help. Just a bit of a tricky one.

[Clunk]

good to see you've got it back up and running mate

[mudnut]

Thanks for the feedback, too.

[4bye4]

Glad to see you running again. My favorite faults - wires broken inside the insulation and ones that go away whenever a mechanic looks at them, then come back when he is gone.

[threedogs]

Good result and food for thought for future problems
Check continuity LOL

[dom14]

Well, after much frustration and deliberation I just paked my baby up untill I could afford to take it to a auto elec. He found one problem in the first ten minutes. A wire from the battery had broken inside the insulation. That didn't solve the problem. After another two hours of tracing and testing every wire he found the offending party. A wire had rubbed through from vibration due to it not being put back behind a tab. Everything would test fine but the vibration when trying to start would cause a short. That's what happens when people help you and don't put things back exactly as they should be. $200.00 and I'm happy to be back on the road. Thanks to all who tried to help. Just a bit of a tricky one.

Glad you sorted it out. It sounds like my hunch was correct. :)
This is something I would find myself, but only if you have enough time and patience to do so.
This is a good example of the importance of properly placing wires through vibrating parts as well as the importance of
using conduits to protect wires.
I recently bought different size conduits to replace old ones and to protect some wires, wire harnesses that don't have a conduit around them. I'm half way through the project.
It's a well worth maintenance job IMO. It can save hours, days and weeks of fiddling around that we would end up with to find future electrical problems.