I have a 3 blink count on the red LED in the LTCC box.
I have emailed Bob and I understand he is busy and I'm sure he will
answer when he can but I am a little impatient! The car was running great
then developed a NASTY Stumble at 4000 rpms, Got worse and backfired thru the exhaust so I babied it home and checked everything out. All my connections are good then I popped the cover and saw the 3 count.

Anyone have this and Know where I may look to fix it?!?!

TIA!!!

 

Don't know, but I got the same problem now.

Mine starts immediately though.

 

I am getting the same thing.
"Wrong number of Hi-Res pulses counted during a High Lo-Res pulse of Low Lo-Res pulse".

I have no idea what this means since my car ran perfectly fine before the LTCC install with no Hi or Low-Res engine codes.

 

ok, I fixed my problem a while ago. Bob thought it was my grounds. after I assured myself that the grounds were good (very important).

I started to move around wires wondering if EMF would be causing problems. turns out the alternator was causing problems with cylinder 2. zip-tie the wires as far away as possible.

By the way, at that time, I actually bought a new alternator, because mine was on it's last leg, then I grinded down the brackets so they would have good contact. that might have made the difference too.

No problems since then.

 

The way the cylinder is detemined is by counting the number of high-res pulses that occur during one of the low-res pulse windows.

There are four low-res pulse windows of the same duration (every other window) and there are four low-res pulses of varying duration.
The ECM (and the Delteq or LTCC) determine which cylinder is the present cylinder-of-interest by counting the number of high-res pulses that are present during the low-res window. The four varying duration low-res pulse windows will have different counts of high-res pulses in them and these counts are of a known quantity.
If these counts do not meet the requirements, it sounds like the LTCC has a way to issue an error.

Another way of saying this is the high-res pulses can determine 1 degree of crankshaft movement, and by counting the number of high-res pulses in a low-res window we can determine the duration in crankshaft degrees of that low-res window. The ECM/Delteq/LTCC know how many crankshaft degrees that each cylinder's low-res window duration should be and can sense camshaft/crankshaft position as well as rpm.

Tom Piper