Xb9 won't idle

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eric_bloomer

Well-known member
Joined
May 1, 2012
Messages
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Hey guys. I'm pretty frustrated. I've got an 03 xb9s. It'll start but won't idle. I have to rev it up to keep it going and even then it still bogs down and stalls out. Any ideas?

 
Almost sounds like fouled plugs. Not providing good spark. TPS reset, clean plugs, plenty of gas.
 
Thanks guys. About to pull the plugs. And yeah you need the software to do a TPS reset before 08 I believe
 
Pulled and replaced the plugs. Old ones had just a little oil (I think) on the tips but weren't fouled. Replaced with new and the exact same problem. Won't hold idle, still stalling out.
 
While changing the plugs I noticed the insulation on one of the spark plug wires had warn through. It had rubbed against something rough. I ordered new wires from ASB. I probably was getting a really weak spark due to the hole in the insulation.
 
After all those fixes, it still won't idle. Any other suggestions? Something to do with the fuel system?
 
I replaced the intake gaskets. The old seals looked like there might have been a tiny leak but nothing serious. No change after I replaced them. Battery is fine.
 

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