No More Spark Knock/Pinging!!!
#1
No More Spark Knock/Pinging!!!
Well, I finally ended the anoying spark knock from my 2004 4.0 SOHC. I had tried new plugs, new air filter, cleaning the MAF, even SeaFoaming the engine. Nothing helped at all. I noticed a TSB for the 4.0 in regards to spark knock.... The soultion was a computer program update. I took it in to Ford today and they updated it. Fixed!!! It's like driving a new truck. It even seems to have more power at lower RPMs! Before, it would always knock on the highway (60-75mph) when going up any sort of hill. Not a bit now! I'm so excited and I hope this helps some other that are facing this problem.
Chris
Chris
#2
My wife's '05 Merc Montego had a similar issue/resolution.
With all the computer controlled adjustments in vehicles these days, I bet we will see more solutions being fixed by updating the programming instead of turning bolts. Welcome to the end of the era of shadetree mechanics rebuilding their own vehicles.
With all the computer controlled adjustments in vehicles these days, I bet we will see more solutions being fixed by updating the programming instead of turning bolts. Welcome to the end of the era of shadetree mechanics rebuilding their own vehicles.
#3
With kids starting into computers at such an earlier age , it's just a matter of time before they figure how to write their own complete code for engine management.Probably running direct from a laptop and ditching the PCM altogether.
#4
Well, I finally ended the anoying spark knock from my 2004 4.0 SOHC. I had tried new plugs, new air filter, cleaning the MAF, even SeaFoaming the engine. Nothing helped at all. I noticed a TSB for the 4.0 in regards to spark knock.... The soultion was a computer program update. I took it in to Ford today and they updated it. Fixed!!! It's like driving a new truck. It even seems to have more power at lower RPMs! Before, it would always knock on the highway (60-75mph) when going up any sort of hill. Not a bit now! I'm so excited and I hope this helps some other that are facing this problem.
Chris
Chris
#6
#8
The price on my wife's Montego was ~$84 after taxes. There are several TSBs for the '05 and early '06 Montego/500/Freestyle with a PCM update as the solution. The TSB issues include hard shifts on the six-speed auto, RPM wandering while cruising on the CVT, headlight flicker, hard start/extended crank in cold weather (our issue), and bad breath (j/k). We did see a minor improvement in fuel efficiency after the update.
But will they run Windows, Mac, or Linux on the vehicles? Seriously though, you can get scan gauges that run from a laptop now. They are only capturing data, though, not setting shift points, etc.
You will have to see if there are any TSB's on '02s where updating the PCM is a solution. If not, you may still want to consider it, as there might be fuel efficiency (my experience) or power gains (OP's experience) from the engineers refining the logic.
You will have to see if there are any TSB's on '02s where updating the PCM is a solution. If not, you may still want to consider it, as there might be fuel efficiency (my experience) or power gains (OP's experience) from the engineers refining the logic.
#9
#10
Does the 04 Ranger have an EGR system? If not, the timing is a lot more critical compared to engines with the EGR system. I had an 89 Ranger with the 2.9L engine. It had no EGR system and on very hot, dry days it would tend to ping. I didn't want not retard the timing and just took it easier on hot, dry days.
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