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A recon ecu is about $150 with lifetime warranty. I think I'll just buy it rather than spend another $90 to have it diagnosed by dealer.
Are there any other possibilities?
Thanks
Any other thoughts?
Ski in TX
I have and 07 too and only get 15 mpg (on a good day 1/2 highway - 1/2 city driving like Betty White with the AC off) since new. Dont feel too bad at 15/16 but 12/13 is really BAD! Let me know what you find out bro.
Ski in TX
Ski in TX
My 1997 Dodge 1500 4x4 5.9 – has what sounds like a bearing squeal. It starts after the engine runs for just a few minutes and only when you apply some gas and build up rpms. I first replace the belt tensioner, still there. Then listened with a stethoscope while it was squealing to the alternator and power steering pump - both did not seem to be making the noise. So, I replaced the water pump... the noise is still there.
Any suggestions?
Thanks
Lou
Good luck.
Regards,
Dusty
Pipeline1
A spark plug that does not fire will produce a noticeable effect, either as a skip or induction system flame back, or both. If a plug intermittently fails to fire on one high RPM pulse you may not notice it, and this could manifest itself as a drop in fuel mileage or performance.
However, worn plugs can affect performance and fuel consumption. As the gap increases or the plug tip edges start to erode, the timing will be retarded slightly due to the fact that it takes a higher voltage build up in the coil in order to produce a spark of enough potential to jump the gap. This is referred to as the coil rise time. When the spark does occur it happens a few milliseconds later than it should and effective retards the spark in that cylinder.
In your case, I'm not sure how you reached the conclusion that spark plugs have affected the engine performance. If you feel there's a noticeable difference in performance between spark plug types, I would suspect that the ignition coil is saturating (coming to its maximum spark potential) before it can produce an actual spark. Bosch plugs, like some others, regardless of the number of electrodes, typically have much wider gaps than the factory specified Champion versions.
If the engine is just suffering from poor performance and higher fuel consumption absence of any difference in spark plug type, I would suspect something else first. Because of the vintage, engine, and mileage of your Ram, my first suspect would be a partially clogged catalytic converter.
Best regards,
Dusty
On older Hemis without MDS, or before they could check for detonation (knock sensor) I'm thinking the PCMs didn't quite have that level of sophistication.
The amount of timing retardation from worn plugs is dependent on how much gap erosion and the strenght of the ignition coil. I remember once installing new plugs in a Ford 390 motor that already had a slight tendency to ping after it came to full operating temperature, so it was probably borderline then. After installing the new plugs the thing pinged so darn bad you would've thought some poured a dozen marbles down the intake. I reset the timing and curring the detonation, and my memory tells me I moved it at least four or five degrees back.
Can't wait for the fun time when I have to change the plugs on my new Hemi.
Best regards,
Dusty
well the guy i bought it from told me that he only put 93 octane gas in it and i put 87
will that be ok
also not to shure if it did this before i put 87 oct.
after at speed if i hit the gas a bit and it hist 2000-3000 rpm
i hear god awful noise it is a ratteling an knocking noise does any one no what this is caused by
is it caused buy the low octane gas PLEASE HELP
is that also knowen as a plenimun gasket sorry for bad spelling
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