M90 rebuild (rudy)

[jd4242]

The truck absolutely will not start with the paperclip in to read codes..

Idk if im doing something wrong or what..i put the clip in and try to start it..doesnt sound difficult. .am i missing something? ?

 

[jd4242]

So definitely think its in the tune..i have set idle with the iac unplugged,then adjusted tps to new tb blade position at idle,shecked maf,check O2s,checked temp sensor, checked crank sensor,changed plugs. ..

All look good but second i plug the IAC in it jumps to about 2000 then settles down to about 1300,with it unplugged and warm, i have idle set to 650...at idle or cruise(if you can get it to cruise without it wanting to stall from accelerating) it runs a perfect AF of 14-15...you sneezle on the throttle and it jumps to 11,any press on gas it jumps rich...

Soooo im lost and really hope its in the tune...

Also got my custom shift knob in that I've been waiting 8 weeks for..its pretty slick..

 

[jd4242]

Got my fan mounted and shift knob on..both turned out pretty good..fan actually pulls alot of air also,should definitely help keep things cool..

guess im done till the dyno Thursday. .my birthday is 11/11 so im praying my issues are in the tune and this thing runs right afterwards for my birthday

 

[4pointslow]

Nice work!
I really like that shifter handle, good choice. I bet you can not wait to hit that button!

 

[CDW6212R]

Excellent, I like that big heat exchanger, the fan etc, and those seats.

Where did the seats come from, they look like what I got from Summit a long time back, for my truck. Do you like their size to fit the truck, comfortable etc?

 

[jd4242]

Excellent, I like that big heat exchanger, the fan etc, and those seats.

Where did the seats come from, they look like what I got from Summit a long time back, for my truck. Do you like their size to fit the truck, comfortable etc?

It is pretty big,the core is 12x12x2..it worked pretty well before i turned the boost up but definitely was getting heat soaked without the fan at new boost levels. .

The seats are cheap summit ones..they are alright, im 6'1" 250 lbs so they get uncomfortable but they keep my fat ass in place though. .lol

 

[CDW6212R]

Thanks, I like these seats as I've sat in them on the floor a few times. I was thinking of having them recovered if I like how they fit in the truck.

I'm glad you like that heat exchanger, and it helps me some to know what size is needed. I'm aiming for boost in the low teens, so something not a lot bigger than that should get me close. I hope there is room behind the bumper that will get enough air to do the job, maybe a big long unit will do.

 

[jd4242]

Thanks, I like these seats as I've sat in them on the floor a few times. I was thinking of having them recovered if I like how they fit in the truck.

I'm glad you like that heat exchanger, and it helps me some to know what size is needed. I'm aiming for boost in the low teens, so something not a lot bigger than that should get me close. I hope there is room behind the bumper that will get enough air to do the job, maybe a big long unit will do.

I didnt want to go to a long one as you have to run a remote fill for it..this one should equal the same size as a long one also,typically a long one is 2'longx4"widex2"thick..if you divide mine into 4" wide pieces you would get 3'longx4"widex2"thick plus the tanks are larger and has a fill..thats why i went with this one and it fit perfectly between the core supports..

 

[jd4242]

Its not in the tune and doesn't appear to be any sensors. .guessing the ECM so ordered a new one...getting really frustrated now..im bleeding money and its gota stop..its getting outa controll..if this doesnt fix it, its gonna have to sit and the focus is gonna have to change to the aviator. .i cant keep dropping HUNDREDS every week..im another $1500 into this build since ive started putting it back together and thats no exaggeration...hell probably more.

Im almost to the point of parting it out..ITS GOTA STOP

 

[Dono]

I absolutely feel your pain.

This endless bleeding makes a monthly car payment look pretty inexpensive.
I've been on the couch in fetal position (No thumb sucking, but close) many times feeling just like you are right now.

Can you maybe point one of those temperature guns on each header exhaust port at the head and see if one exhaust port exit isn't as hot as it should be?

You were soooo close.

 

[jd4242]

I absolutely feel your pain.

This endless bleeding makes a monthly car payment look pretty inexpensive.
I've been on the couch in fetal position many times (No thumb sucking, but close) feeling just like you are right now.

You know i felt your pain when you was going through it also because i had before also..the problem is now I've pushed the envelope and thought i was past the little bs problems but some reasons there is more now than ever..

I took this on as a single guy and over a bet..now im struggling to pay bills and feed my family. .I've been having to use Uber (taxi) for many weeks/months and my girl has been having to pick up both boys..the stress on me and my family has been too much lately. .something has to give

 

[Dono]

Any way you can monitor fuel pressure from inside the cabin to see what happens when the mixture goes so rich?
This issue seemed to start when you changed fuel pumps. etc.

Sorry for throwing crap out there, but something might just give you an idea of something to try.

 

[jd4242]

Any way you can monitor fuel pressure from inside the cabin to see what happens when the mixture goes so rich?
This issue seemed to start when you changed fuel pumps. etc.

Sorry for throwing crap out there, but something might just give you an idea of something to try.

There is nore going on,it started when i cleaned the maf and changed the tps..think the ecm just crapped out..

Its idling high and running rich when hitting gas..we were messing with it today changing tunes and all of a sudden the idle was good and everything was good...we went to add fuel and did a pull,it was looking good but all of a sudden the idle jumped high and went rich..we changed it back and still rich..

It has something to do with whenever it idles high we can't tune it..only when it idles good does it accept tunes...but problem it doesnt idle good 99%time..something is shorting out..pretty sure something in the ecm is loose

 

[Dono]

Your getting there, for sure. You have it narrowed down to the ecm, connector, or wiring.
I only hope you can hang in there. Mentally and financially.

Were you able to test the sensors at the ecm connector while plugged in and truck idling high? If not, lets hope the new ecm just works.

I cant think of any plausible reason the ecm wouldn't accept tunes if it has power and ground, other than something shorting out (either 12v being shorted to ground, or signal voltage on a pin shorting to 12v that should never reach 12v.

Hang in there JD.

 

[CDW6212R]

Yes, take it easy and get away from it for a while, just a break to get back to calm/even etc. I'm a VOL and we're living with bad football and everyone wants to lynch the coaches.

 

[vroomzoomboom]

when don said short, this made me think of something. is it possible you might have pinched a few wires, or melted some wires on the exhaust? there was a problem in some ranger years before you (i had a 91 that this happen to) that the harness was too close to the drivers side harness if i remember correctly that melted a couple of wires, and shorted out the computer. when that one happen it shorted the fuel pump wires and the pump wouldn't turn on. completely different problem that your having, but it might be something to look at.

 

[4pointslow]

You will get this figured out and straightened out, just hang in there.

 

[jd4242]

Anyone know how to test the MAF??its a 90mm from a lightning if that matters..its getting power but what should the other wires test??

I didnt have issues till i changed the tps,air filter and cleaned my maf..just want to eliminate it before i crack open the new ecm to put my chip in it..once i do that i cant return it..its sealed with tape and will be here monday

 

[jd4242]

PS....
ITS MY BIRTHDAY! !!!

 

[CDW6212R]

PS....
ITS MY BIRTHDAY! !!!

Happy Birthday!! I hope you had a great one, and maybe some good football.