Engine/Transmission (1998.5 - 2002) F-1 Mach 4's

[mhuggler]

Here's a thought: What if I extended the wire harness and ran the IAT sensor into the cab where it's nice and toasty? If nothing else it could be done for troubleshooting purposes. BTW, cummins makes a kit to relocate the sensor outside of the manifold to prevent carboning (mostly from exh. brakes). This tells me that the readings can't really be that critical. Intake temps. vary quite a bit depending on what the turbo is doing.

 

[Marco]

Last winter I've had my personal ECM broke.

At exactly 32°F the engine would just quit. At 33°F no problem at all, at 32 no go... Never found out what caused it! I have that piece of crap still laying around. Summer ECM? :-laf



Marco

 

[Chrisw]

WOW ... HOLY COW, My truck also had an evil twin... . What is the chance of your truck being an 02 white 4x4 ext. cab H. O?



If you go back and read my post from a year ago it would look like what you just typed. There would be no change, same temps, same speed. even the same results with larger injectors and larger turbo.



No joke it would read word for word with my posts from last year. Marco you have a very good memory to remember what happen last year with everything else you have going on.



rubberneck you must have a lot of patience, For any man to have lived with your truck for 90K and still have it. I was going to wait till summer and trade mine off if I couldn't have fixed it. And it only had 30K on it.

 

[rubberneck]

WOW ... HOLY COW, My truck also had an evil twin... . What is the chance of your truck being an 02 white 4x4 ext. cab H. O?.

LOL, actually it is flame red 01. 5 4x4 quad, but it definitely sounds like what you have described.

If you go back and read my post from a year ago it would look like what you just typed. There would be no change, same temps, same speed. even the same results with larger injectors and larger turbo. .

Over the past 4 years, i have read of a lt of guys with very similar problems. Only thing is most people immediately want to jump in and blame it on aftermarket parts, or bad transmissions or driveline parts. I know that those things cause a lot of issues, but not this one. If you have this thing, you know it. My buddy calls it the rubberneck shake. LOL

No joke it would read word for word with my posts from last year. Marco you have a very good memory to remember what happen last year with everything else you have going on.



rubberneck you must have a lot of patience, For any man to have lived with your truck for 90K and still have it. I was going to wait till summer and trade mine off if I couldn't have fixed it. And it only had 30K on it.

No not really patient, but it seems like just about the time i have gotten totally pi$$ed off and frustrated, summer rolls around and no more problem. I am lucky that i live in a relatively moderate climate, or this thing would have gotten the p-pump long ago. I love the truck, just has some dang wierd quirk.

 

[Chrisw]

rubberneck, I would put good money down on a bet saying your ecm is having the same trouble mine had.



Even if you don't want a marco ecm I would find another ecm for your truck. It is so great driving a truck that is smooth. The only down side I have found to having a marco ecm is it is very hard to drive off road and even worse if you use low range. But for the increase in mileage and power good luck getting the one on my truck.

 

[rubberneck]

chris, yeah, i searched for a while for a stocker, but the only one i found was on an HO motor at a local junk yard and the guy did not want to sell it. Wanted to sell it as a complete unit. Plus, I was under the impression that there are tons of different softaware versions, and didn't want to wast money buying an ecm not compatible with my truck. I hear you about the difficulty driving off road. I talked with Bob and he said that a member was currently testing a unit that Marco had decreased the sensitivity on the pedal. I would be very interested in that version, as i take my truck to the snow to go skiing, and it likes to break loose enough as is. 6 speed, plus stiff rear diff and mach 4s make for an exciting ride if you do not pay attention. I will not let my wife (or anyone not used to it) drive the truck when it is wet out. It just breaks loose to easy once turbo lights off. Im always in the mood for a performance enhancement, but im getting desperate to figure this thing out. Heck at this point, I would be willing to buy a core, and send it to marco and pay him full price just to flash it with stock programing and make sure it is a good one with no bad chips.

 

[rubberneck]

Marco, if you are still following this thread, i got the info off of the sticker they put under the hood when they did my original reflash. p/n 383332305J

dlr code 25024 date 12-19-01. if this helps sort out which programming i need, great. If not, i will find another dealer to hook up the scanner and read it for you. thanks Phil

 

[Chrisw]

I talked with Bob and he said that a member was currently testing a unit that Marco had decreased the sensitivity on the pedal.

That would be the only way someone would get the ecm off of my truck. That is my only compliant with the emc.



Marco if you need feed back hook a buddy up and I would be more than happy to test and report back, PM me if interested. I will pay for shipping

 

[rivercat]

Im sure There are more of us that are All EARS. I would like to try that program too. BoB? details?

 

[Bob Wagner]

rivercat it will be done

 

[rivercat]

Its in your hands what to send me. I appreciate what you have done so far and apologize for any negativity towards the C'er as I think it is THE best box mod out there for street. I have plenty of lowend smoke (although thinner and fired out the pipe at a higher velocity)and am actually quite happy where im at the p. s 62 works well with just the 4s and my power puck but im sure it will be Plum WICKED with the C'er. One thing Bad about the puck is it takes out the defuelling of highboost but sometimes sets the p0234 code for some reason and runs better with the code and drivability erased. Hold my ECM as long as you want as my clutch will only hold a good rump session as soon as the truck is warm enough for such and not a minute longer till it starts to slip horribly. Actually quite impressive for a stocker and the power I should be at. This being the case I would not be able to truely test the new ECM program and post accurate opinions. Thanks BOB No rush

How did this thread evolve into Another Damn M. A. D ecm thread

Pm me if any questions or if I owe you anything after this I feel indebted to

 

[Marco]

383332305j

383332305J ,Attention guy, big brother is watching you... .



That makes your truck an 01. 5 / 6 Speed / Carb - California truck.

I know everything I need now.



For the new CaTCHER Version. It's still beeing tested, don't get too excited about it, YET. Before I release a new software, I make SURE all the homework has been done.



"How did this thread evolve into Another Damn M. A. D ecm thread"

OPS, sorry!



Marco

 

[rubberneck]

383332305J ,Attention guy, big brother is watching you... .

Duh, that is why i wear this aluminum foil on my head. So big brother can't steal my thoughts. Now if I can just get the voices to stop talking to me. :-laf

That makes your truck an 01. 5 / 6 Speed / Carb - California truck.

I know everything I need now.

For the new CaTCHER Version. It's still beeing tested, don't get too excited about it, YET. Before I release a new software, I make SURE all the homework has been done.

Time line is not important to me, I would be happy to wait to ensure you get it the way you want it. I would be happy to try it though if you need someone to do that. I'm sure you have a long list of volunteers though.

 

[rubberneck]

Marco, from an earlier post, Bob had made the comment that the only differece between the carb HO and the federal HO was the emmisions sticker. If this is the case, obviously there is no performance advantage to having a "federal" ecm. If there is a difference, why couldn't i run a "federal" program. I dont care about emissions if it will get me better performance. I dont think CARB would approve of my truck regardless of the ECM in there. :-laf