Pimpx and knock sensor
Lead Driver
Joined: Jun 2021
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not sure about your note.
eec-Iv have misfire detector some eec-iii. Since 1882-83 sbf.
then 1996 351w cali engines, some obd2
all obd1.
obd2 have crank shaft position sensors, specifically for spark, in conjunction with camshaft sensor, as they do not have a distributor, well some do, , but if you go distributor less, you need crankshaft sensor.
im now interested to know if obd2 crank sensor also detects misfire, I doubt it.
eec-Iv have misfire detector some eec-iii. Since 1882-83 sbf.
then 1996 351w cali engines, some obd2
all obd1.
obd2 have crank shaft position sensors, specifically for spark, in conjunction with camshaft sensor, as they do not have a distributor, well some do, , but if you go distributor less, you need crankshaft sensor.
im now interested to know if obd2 crank sensor also detects misfire, I doubt it.
Since the engines are old famlies they have distributors and knock sensors from their eras. and the add on crank sensors are regulatory necessity but coincidentally they do a great job for some timing control since its being modified by the PCM anyway
Logistics Pro
Joined: Aug 2014
Posts: 3,566
Likes: 852
I see no reference to OBDII system, it specifically states OBDI TFI Misfire detection sensor. Yes, TFI happend on OBDII, rarely, then EDIS.
Thats your docs, TLDR;
For TFI, yes the crank has a misfire detector, without TFI, pretty sure it is EDIS and crank sensor.
Either way, who cares, FORD (Henry) dropped the miss/knock whatever you want to call it, cause it doesn't work. We are 40-50 years later in advancement, don't use it.
Tune your engine with pimpx, dont' over rev it, if you do, add fuel, you don't want to go lean. Put your rev limiter to 4000, you'll never(shouldn't) have a problem.
ps. If your worried about rev limiting and knock and you actually don't know about either, its a moot point.
Thats your docs, TLDR;
For TFI, yes the crank has a misfire detector, without TFI, pretty sure it is EDIS and crank sensor.
Either way, who cares, FORD (Henry) dropped the miss/knock whatever you want to call it, cause it doesn't work. We are 40-50 years later in advancement, don't use it.
Tune your engine with pimpx, dont' over rev it, if you do, add fuel, you don't want to go lean. Put your rev limiter to 4000, you'll never(shouldn't) have a problem.
ps. If your worried about rev limiting and knock and you actually don't know about either, its a moot point.
Logistics Pro
Joined: Aug 2014
Posts: 3,566
Likes: 852
36 tooth tone ring is 302 EDIS no distributor, crank sensor, might have a knock sensor I do not know.
Who cares, I do not know PIMPX, nor do I want to. There's TFI and EDIS, you have miss fire detector or crank sensor.
WTF does PIMPX need or want? Not plug-n-play.
Hotshot
Joined: Jun 2015
Posts: 12,870
Likes: 2,442
Yes and no. It plugs right into the factory harness and uses the OEM sensors. The computer skill to tune it was above my ability but there are people on here that have been able to tune it themselves.
Logistics Pro
Joined: Aug 2014
Posts: 3,566
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This would also be above the skill of the regular tuner who thinks Pimpx is Plug N Play, as you would have to program a custom input, and tell it what to do.
Hotshot
Joined: Jun 2015
Posts: 12,870
Likes: 2,442
I misunderstood your comment about the PiMPx computer not plugging into the factory wiring. Already established is that the knock sensor does little to nothing. I have a 351W so no knock sensor and PiMPX doesn’t use the sensor so why bother to try to get it to work?
Lead Driver
Joined: Jun 2021
Posts: 5,221
Likes: 805
I see no reference to OBDII system, it specifically states OBDI TFI Misfire detection sensor. Yes, TFI happend on OBDII, rarely, then EDIS.
Thats your docs, TLDR;
For TFI, yes the crank has a misfire detector, without TFI, pretty sure it is EDIS and crank sensor.
Either way, who cares, FORD (Henry) dropped the miss/knock whatever you want to call it, cause it doesn't work. We are 40-50 years later in advancement, don't use it.
Tune your engine with pimpx, dont' over rev it, if you do, add fuel, you don't want to go lean. Put your rev limiter to 4000, you'll never(shouldn't) have a problem.
ps. If your worried about rev limiting and knock and you actually don't know about either, its a moot point.
Thats your docs, TLDR;
For TFI, yes the crank has a misfire detector, without TFI, pretty sure it is EDIS and crank sensor.
Either way, who cares, FORD (Henry) dropped the miss/knock whatever you want to call it, cause it doesn't work. We are 40-50 years later in advancement, don't use it.
Tune your engine with pimpx, dont' over rev it, if you do, add fuel, you don't want to go lean. Put your rev limiter to 4000, you'll never(shouldn't) have a problem.
ps. If your worried about rev limiting and knock and you actually don't know about either, its a moot point.
but california offered no possible way to sell a truck without that compliance , so thats why MAF/Cali 351 and 460 are a common thing that come up a lot.
youre right that the 351 doesnt have a knock sensor.
only a OBD2 1996 or 1997 F250 or F350 will have a misfire detection sensor which is a crank trigger (hall-efffect iirc) on the crank pulley tone ring , but a 1996 F150 all should (gas engine wise)
all of those engines have distributors. you do not find EDIS on a 4.9, 5.0, 5.8, 7.5
That means there is obd2 vehicles with knock sensors as well.
The 1996 f150 4.9 and 5.0 both are equipped with a knock sensor and a misfire detection sensor.
On 1997 F250 and F350 and 1996 as well but only CALIFORNIA eec-v obd2
that will support live data which reads out misfires on individual cylinders.
Again, this is a obd2 regulatory requirement, as in the law. you cannot have obd2 compliance without that functionality
Ford only met OBD2 for F250 and F350 in 1996 and 1997 in california but it
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