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help please 4.6 runnig bad no money :(
Posted: March 21st, 2011, 11:47 am
by superjeep
hi im new in this site and i think is awsome ,i need big help with my 91 cherokee,i bought and 4.0 block with a 258 crank,258 rods and stock std pistons ,i did put eb=verything together with all the new parts but my jeep is running like a dead 4 cyl,now becasu i live at the beach does that means i need to use better fuel???

Re: help please 4.6 runnig bad no money :(
Posted: March 21st, 2011, 11:50 am
by superjeep
i have stock injectors,the timimng is in good position,new crank sensor,replaced the computer,all the sensors are new but the o2,what do i need to do to get it right

<thanks in advance for your help
Re: help please 4.6 runnig bad no money :(
Posted: March 21st, 2011, 5:49 pm
by superjeep
im thinking to upgrade my injectors to ford#24,i just put a new fuel pump and i will change my fuel preassure regulator how do i know if i have to do something to my map sensor?

anyone please!!!!!
Re: help please 4.6 runnig bad no money :(
Posted: March 21st, 2011, 6:18 pm
by superjeep
my crank is not 12wt is that a bad thing??
Re: help please 4.6 runnig bad no money :(
Posted: March 21st, 2011, 6:51 pm
by dwg86
24lb injectors is a good start. Did you degree you cam? You cam could be off a tooth.
Re: help please 4.6 runnig bad no money :(
Posted: March 22nd, 2011, 4:13 am
by SilverXJ
How about you tell us the actual problem, type clearly, tell us the details of your engine and vehicle, and what you have done to try to fix it.
If you have a distributor try this to start:
http://www.angelfire.com/my/fan/dist_index.html
Re: help please 4.6 runnig bad no money :(
Posted: March 22nd, 2011, 8:08 am
by superjeep
guess what it was the distribuitor ,i wasnt 3cm from the bottom of the mark it was like almost 2 cm. i did check it like 3 times but i guess i was so worried about that i didnt see the problem,

thanks a lot for your help

my cherokee with 35"tires runs like a champ

but know do i need to change the injectors to #24 anyway?? and if i do that am i going to have problems whit the o2 sensor or the map sensor or anything else???? i live at the beach so i am at sea level,the jeep is runnung beautiful so i dont want to mess it up you know

but any way thanks a lot for your help again!!!!!! i will post pic as soon i can clean my jeep hehehehe!!!!!!!

Re: help please 4.6 runnig bad no money :(
Posted: March 22nd, 2011, 2:18 pm
by amcinstaller
a dirty jeep is a happy jeep.

Re: help please 4.6 runnig bad no money :(
Posted: March 23rd, 2011, 10:39 am
by Cheromaniac
superjeep wrote:but know do i need to change the injectors to #24 anyway??
Check your plugs. If they're white you'll need bigger injectors.
Re: help please 4.6 runnig bad no money :(
Posted: March 23rd, 2011, 4:39 pm
by SilverXJ
Cheromaniac wrote:superjeep wrote:but know do i need to change the injectors to #24 anyway??
Check your plugs. If they're white you'll need bigger injectors.
That most likely won't tell him anything unless he does a WOT run then immediately shuts if off and pulls the plugs.
Re: help please 4.6 runnig bad no money :(
Posted: March 24th, 2011, 5:02 pm
by superjeep
hey guys for some reasons the computer on my 91 jeep cherokee stoped working the jeep wont start,so i went to my friend shop and tried the one he had for testing and started rigth away so i guess mine is broken ,how do i know what tipe of computer i can buy like in ebay or amazon,is it a specific number that i need to look for,my jeep is a 91 cherokee limited with a automatic transmition>>>>> thank again for all your help and by the way SILVER how do i do a WOT test to find out if i need bigger injectors????