Search:

maybe this was the root cause!!!!!
http://www.enginebuildermag.com/Article/2058/i_replaced_a_97_ford_302_with_a_351_windsor_but_the_thrust_bearing_failed_after_only_200_miles_what_gives.aspx

thanks for the info. i wonder if a carburated/distributor type motor would have shown any signs, like the efi set-up did.

man, had feeling that was going to be the end results. i guess running a motor on street ride is not as abusive as running it in a drag car. i wonder if that is a common failure due to high reving...

just looked at your original tune, the dwell map table seems to be within plausible values, just a hair higher than my map table values for the region in question. the pcm relies on alt. voltage...

according to my 04 service manual, the pcm will sitll be able to start the engine with the loss of a cmp sensor, but it may take a little longer because it does not know where the valve train positon...

i'm relatively new to tuning efi engines and so my application may not be adequate for other set-ups. the track is pretty safe to tune, if something goes wrong there should not be any trees to worry...

the picture on the left is the curve i relied on when tuning for n/a for a long time. the second one is also n/a but it is used for the spray and is what i'm currently working on. by the way, those...

fuellcurve.png[/IMG]one gear is just too narrow to do any kind of successful tuning for the track. here is an example of two fuel curves with different ve maps respectively.

i'm not sure what the intentions are for weatherman, but in the world of drag racing, at least at the strip/street level, there is a slightly different approach. many people who habitually tune at...

that's what i thought, can you take that pcm and install it on another ride to count it out as the culprit?, or maybe it's the location and the pcm is exposed to excessive heat! you probaly took...

so you don't have an icm, right?

what about the ignition control module? i can't believe my service manual mentions it and i thought they only came with distributor type hei systems. my manual states the front eng. bay as the...

what is the low reference signal used for by the pcm guys? there are three circuits that comprise the ignition control system at least according to my 04 pcm wiring diagram. there is the power supply...

assuming the circuit is intact with solid electrical contacts at the junctions and connectors and pins, then that certainly is a valid point. i would however, bypass the harness and feed the coils...

did you change the eng. protection timing from 24 to something lower? the log shows a flat line timing value of 24 at wot. i would change that table to 21*, flash the pcm and run it at the suspect...

i really think he should log a wot run from 3.5krpm to 6krpm, with ect temps at 130,160, and the highest temp that his thermostat is rated at respectively. also, i would like to see mph along with...

i know you said the cam sensor was changed, but that is the circuit i would be checking to make sure the pcm is getting a clean signal, that would include the connector pins at the sensor and pcm and...

did you add more fuel as i suggested? you were not very far off from the first tweak i suggested to you. trust me kr will go away once you reach that magic .915mv or so. your tuner took out way too...

i always had my suspicions that the average budget wb systems were not terribly accurate for wot tuning, and so i have always relied on several parameters for a sanity ck.{kr,nb02s,idc,ipw,ect}, but...

that's ok, revert back and do 4% to the ve from 13.8 to 15.2 and select the linear blend feature, select blend colums only and encrease max blending. revert back add 4% from 8khz to 12khz. the mv o2...

your strategy for combating kr and the lack of fuel is fine, for now. i'm assuming that you are using 93oct fuel, anything less is not adequate for the mods you posted. o2 values of less than .900mv...

can you post an open loop log?. let the eng. sit overnight and do a 30% to 40% tps run all before the coolant temps go above 130f.

looking at that schematic, your problem is somewhere between the pcm blue cconnector pin 61 to connector 220. you definitely need to verify which pin is used on that pcm to begin with, but assuming...

with a h/c mod, seems to me that your condition would be expected especially, if while in decel., you have altered the ve tables in that particular region. if you are not getting any poping noises...

go to the minimum pulse tables and decrease them by 5 to 10%.