Friday, January 27, 2006 - 02:04 pm, by: Luke Middleton(Spook)
Ah, Bosch parts. Fair enough. I no longer fell like I've been ripped off. I have just come inside after checking a few more bits n pieces - checking ecu connections etc. My leads are only 6 months old, plugs are good as are the parts I replaced in the above post. Anyone got a spare coil pack I can use to help diagnose the miss? Not happy Jan...
Friday, January 27, 2006 - 04:17 pm, by: Luke Middleton(Spook)
The RPM drops when it misses. But the funny thing is, if I give it a boot full, it will miss for 3 or 4 seconds and then once the revs are up, will take off without any probs through to red line. Sometimes it's real bad, others not so. Only very occasionally will it miss when idling in gear. It's all very strange.
Friday, January 27, 2006 - 08:19 pm, by: Luke Middleton(Spook)
The car seems to hesitate and feels like it's running on a few less cylinders. When it does do it, it's definitely not just 1 cylinder not firing. The fuel filter should have been replaced when I had the car complianced. I'll stick my head under later to confirm. I'm also on my 2nd tank of fuel since the miss started. Mark N, can I hit you up to borrow your spare coil pack once you fit the new ones?? Failing that, anyone with a spare ECU I can try?
Don Bagnall Moderator New Zealand 1991 UZZ30 GT4.0 V8
Friday, January 27, 2006 - 09:10 pm, by: Don Bagnall(Baggs)
As Mark Paddick says.............a lot of early ECU's are suffering from leaking capacitors, and other crap, so this could be a NEW possibility to factor into diagnostics, instead of the "Usual" bogys.
Friday, January 27, 2006 - 09:52 pm, by: Luke Middleton(Spook)
I pulled the ECU out this afternoon. Checked both circuit boards. Nothing obvious in terms of leaking caps or dry joints etc. but that doesn't mean much. At least I can still drive the damn thing.
Saturday, January 28, 2006 - 07:15 am, by: Mark Northcott(My91gt)
Yeah Luke that's cool, I shall send it down when I get it. At this point in time with the cost of leads I couldn't care it's more or less who had them close enough for me to get my hands on monday.
I'm SKATING to work FFS!! Takes me bout 30mins and it's all hills and ••••• No wonder the soarer struggled going up the bloody hills when only on 4 cylinders
Saturday, January 28, 2006 - 08:07 am, by: Mark Paddick(Sparks)
Going price for 2nd hand computer is $250. So far I have fixed all but one of the faulty ones I've seen. Aftermarket will be a pain with the auto. You'll need a working stock one to control auto.
Sunday, January 29, 2006 - 04:29 pm, by: Mark Northcott(My91gt)
That's ok mark I'll let you know.
And Luke I'm hoping parts left Sydney on Friday so I should have them on Monday or Tuesday at the latest I hope.
What coil pack do you think it is? Cuz my "top" one is the one that's playing up and hte side one appears to be fine. But i'm unsure if the side one and top one are interchangable???
Tuesday, January 31, 2006 - 06:34 am, by: Mark Northcott(My91gt)
The easiest way to find out Luke is disconnect one of the coil packs and if doesn't make a change to the way the car is running then there's a good chance that is the faulty coil pack.
We unplugged my top coil pack and ignition lead and the engine didn't change AT ALL. Did the same to the other side and it was firing on 3 cylinders.
Should have parts today. Well I hope so. And we'll be putting them in tonight.
Tuesday, January 31, 2006 - 08:05 am, by: Luke Middleton(Spook)
Hopefully the parts will get you running again. I'm picking up a set of leads this afternoon. The leads were supposedly replaced when I bought the car 7 months ago - they look OK and tested out OK with a meter but at least that way they are a known quantity.
Tuesday, January 31, 2006 - 08:10 am, by: Mark Northcott(My91gt)
Yeah mine is the same "replaced" before I brought the car (I even have an invoice) but the plugs were FARKED at least 3mm gap. I got new leads at Autobarn waiting on rotor buttons and dizzy caps. I got my coil packs in my hot little hand now. Just need to hurry up and wait for 5pm so I can go home and install them.
Tuesday, January 31, 2006 - 08:05 pm, by: Mark Northcott(My91gt)
OK changed the spark plugs, leads, coil packs, dizzy cap and rotor buttons. Now it kicked over but a lead got caught (well almost did) so i stopped it and then went to start again and it's just not kicking over. There's spark there and lots of fuel.
Tuesday, January 31, 2006 - 08:36 pm, by: Luke Middleton(Spook)
Gees mate, sounds like your having a bad run. I can sympathise. I replaced my leads tonight and guess what... It still has a miss Iv'e got it booked in with the local mechanic this Friday He reckons it could be a bad injector. I have not heard or read of anyone with such a problem with their V8 Soarer. Anyhow, he has all the diagnostic equipment so I will soon find out. I disconnected the leads one at a time and found that it did have an even bigger miss except when I unplugged cylinder 3.
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