โMar-19-2018 07:35 AM
โApr-15-2018 08:18 AM
Gjac wrote:
Glad you found the problem, as you can see from my original post I had a cracked spark plug also and it was very hard to see.
โApr-15-2018 07:05 AM
โApr-13-2018 08:34 AM
Gjac wrote:
Did you ever find the problem?
โApr-13-2018 05:12 AM
โMar-20-2018 05:49 PM
j-d wrote:klutchdust wrote:
I owned a 1985 "birthday bird" Thunderbird that ran when it felt like it and stopped when it felt like it regardless of where you happened to be. Many years later Ford fessed up and said a module in the ignition system would shut off the fuel pump once it got hot, not always but sometimes.
We had an '84 and an '86 TBird. Both V6 engines with EFI. The '86 was a deluxe one with six way power seats both sides, electronic dashboard and AOD electronic overdrive. I really liked those cars. '84 was plainer with 3-speed auto and one 4-way power seat. It seemed to have more "heart" though. I think the distributor module was "TFI" Thick Film Integrated (Circuit) and some of those modules were troublesome.
โMar-20-2018 04:54 PM
klutchdust wrote:
I owned a 1985 "birthday bird" Thunderbird that ran when it felt like it and stopped when it felt like it regardless of where you happened to be. Many years later Ford fessed up and said a module in the ignition system would shut off the fuel pump once it got hot, not always but sometimes.
โMar-20-2018 02:55 PM
j-d wrote:
Does it sit there and miss at idle, when you can dink with it, like unplugging the injector connector and seeing if that makes a change? I wish we could narrow between Ignition and Fuel before going all out on Ignition.
I don't have any of these, but you can get a "Noid Light" that plugs where an Injector connects. Doesn't tell you injector efficiency, but at least confirms the PCM is pulsing the injector.
Comfort amid Frustration: Coil is probably less expensive than a diagnostic hour at a shop.
It'll be a little while but I'll start a thread in automotive to see if anybody has a tip.
โMar-20-2018 02:10 PM
โMar-20-2018 09:05 AM
j-d wrote:
It has a six-hole pack and missing on #5 only...? Is this one of the "waste spark" systems where a Six would have a Three-Coil Six-Hole pack? Parts lookup shows that. Usually when one cylinder misses with a pack like that, so does the opposite one in the firing order, the one connected to the opposite side of that one coil out of the three in the pack.
Is this the setup you have? Is the engine a V6 3.6L PentaStar? I'm wondering if the sparkplug cables reach, could you switch them, and see if the problem migrates from #5 to its opposite #6.
We nearly scrapped a Subaru where a NEW coil was dropping two cylinders. Another NEW coil and it was back to its old self.
Please send the Engine's Name, Model Code, and Displacement. I want to try this on another forum.
โMar-19-2018 07:46 PM
โMar-19-2018 07:06 PM
Heisenberg wrote:
If you can observe the engine compartment in the dark while it is stumbling you may be able to see where it is firing before reaching the cylinder. Knowing which cylinder is missing is a big help. You just need to trace one circuit.
โMar-19-2018 06:23 PM
โMar-19-2018 04:28 PM
โMar-19-2018 10:05 AM