new stroker
05-05-2011, 12:06 PM
#1
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
new stroker
I have a new stroker motor in my XJ and wanted to know if anyone knows if i Have to get my computer retuned for it run right or if the stock tune will work and im just missing something. Timing seems to be ok fuel pressure and good and every seems ok. I do have bigger injectors and throttle body for more and fuel.
05-05-2011, 08:00 PM
#6
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
sorry no i didnt see it. but i just read it.
Ok so if i cant do anything with the comp and if the comp can handle the sensor inputs do you have any idea on what i should look at that is making my jeep run bad?
I pulled out the spark plugs to look at them and they are slightly black. So its running rich right?
i was thinking about putting in the stock injectors and see how it runs. would that be a really bad idea?
Ok so if i cant do anything with the comp and if the comp can handle the sensor inputs do you have any idea on what i should look at that is making my jeep run bad?
I pulled out the spark plugs to look at them and they are slightly black. So its running rich right?
i was thinking about putting in the stock injectors and see how it runs. would that be a really bad idea?
05-05-2011, 08:10 PM
#7
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
The CEL did come on but was was O2 B1S1 voltage to high. i think i wired it up wrong. I havent ran it long enough for a code to set yet. I also did have two other ones pop up but i think i caused them. TPS out of rang and MAP. But i unpluged them to see if it ran better or worse with them unpluged. I didnt notice a difference on how it ran
Trending Topics
05-05-2011, 09:34 PM
#8
Plug all the sensors in and check the O2 fuse in the junction panel. Then start the motor and let it run for 10-15 minutes or until the CEL comes on. Even if there is no CEL, connect a scanner and see what is reported.
05-05-2011, 09:55 PM
#9
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
I also did have a cel on before doing the stroker and it was for O2 B1 s1. I cant remeber what it was exactly but that was why i had switch the two white wires around. I thought that i had wired it up wrong when i replaced that O2. so i switched them to hope to correct problem. I have switched them back to normal but havent ran it long enough since codes last cleared. I will check all fuses tomorrow. Is there anything else i should check and what do you think about me putting in the OE injectors back in it to see if makes a difference on how it runs?
05-05-2011, 10:34 PM
#11
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
new ford 24#/hr fuel psi is at about 47 asking cause the plugs where a lil black and it smells to be running rich
05-05-2011, 10:49 PM
#13
Newbie
Thread Starter
Join Date: Mar 2011
Location: Ozark, Mo
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.7 stroker
that was my first though but i have spent like half a day messing with it. If i move the distributor one tooth back or forward and it runs worse. do you have pics of how where the rotor should be pointing when at TDC?