idle rpm sounds right on. no tac so i cant tell exactly. I will take a look at the plugs in the morning and post a pic of one to have a look at. there is an exaust leak almost all the way back where part of the pipe has broken free of what looks like a glass pack but its way down the line past the o2 sensor.
As for the stator I wasent sure if that was the issue and i am no longer getting a code 14. i'll have to keep checking.
as far as koer code 77 Im not sure how to get the rpm to the desired level ive tried several times to wot test but i dont want to risk blowing the motor. I ordered the book today as well hoping it will give me a good description on how to do a wot koer test.
Well I think I may have found a soultion. took a look at the plugs and being brand new they looked a little dry and heated.
Was talking to a buddy at the store and he said the truck is bad about upper intake gaskets. After hearing that it all started to fall in to place. only does it when warm, its getting worse over time, no engine code about a sensor other then 41 for running lean. gas mileage getting bad and all the testing for fuel and vacuum.
so i spent the $8 on the gasket set and found a missing bolt on the opposite side of the intake under the opening where the air hose connects. all the weight of the intake is resting on the small bolts holding the upper together.
Anyone else think this sound reasonable as well? if not o well $8 and a day of fun pulling the intake off hehe. I do actually like it lol.
yeah after i got the intake done the truck started a new issue. its in perfect timing that it misses seems like one cylinder is not firing but then i take a metal bar and tap the front 2 injectors and it goes back to how it was.
as for the exhaust the leak is all the way back by the muffler. about 4-5 feet away from the o2 sensor.
So i replaced the distributor as oreillys had one for $80 lifetime warenty that came with the module. I also replaced the rear 2 injectors as well as the front 2 now only the middle 2 are left but again they look new or recently replaced.
after all the goos hunting it still does the same thing. once warmed up it sputters. Think im going to have the timing checked out just to make sure its not that.
I may have resolved the issue. did too much more reading and some people said to unplug the map sensor.
I unplugged it and the truck ran without a sputter after being warmed up. It had no power during take off but it did not sputter.
I too hopefully found my wild goose chase too. For the past year my 89 F250 would not start, no pumps, spark or codes sent out, wiggle the main harness and will start up(still no codes set). This was intermittant and once the harness was moved problem is gone till next start up days or weeks later. Just with in the past month it started to shut down while driving, the tach drops to 0 and engine coasts down and stalls. Well last night I went to the store and got down the road, it stalled and this time no matter what was wiggled, no start! Finaly it hard faulted to be able to track it down! I finaly found the main ECU relay is the culpret! It has bad contects and that is hopefully the problem. Now to dive into the parts pile and get another relay.