chantal73

hi,

i really need help..

my 1991 cherokee won't run.. when i turn the key it cranks..but that's it.

i drove it for a couple of weeks and all of the sudden it just stopped.

my husband checked everything from computer to csp..all is good

it has a spark..it's not the fuel pomp, i've tried two different computers,

my husband thinks the injectors won't open...

when he puts some fuel in the carborator it runs...until the fuel in it is gone..

anybody has any ideas ??


we can't read the computer for codes...
and bringing it to a jeep specialist is just to expsensive over here in the netherlands, but i just don't want to get rid of my cherokee like that,
so i was hoping i could find some help over here

greetings Chantal

jeepjerry

Crankshaft position sensor may have went bad, it tells the computer when to open the injectors. It will still have spark without it since they have distributors.

mike37

do a serch for key codes

you can turn the key on three times and count the check engine light flashes to get the codes

mike37

link to good instructions

http://reviews.ebay.com/ebaymotors/1991-1995-Jeep-Wrangler-YJ-Trouble-Codes_W0QQugidZ10000000005763791

chantal73

thanks for the answers...


if my husband takes out the crank shift positioner, it won't spark...

chantal73

Thanks for the reply

we can't check for codes since the light doesn't work...

if i turn the key i'm not getting any engine light.. my husband checked all the bulbs and they're working.. i just don't seem to have an engine light

Abovetimberline

If you are able to put fuel down the throttle body and run it,that says the cps and timing is ok,turn on the key and check for fuel on the fuel rail,there is a cap on the front of the fuel rail that looks like the cap on your tire stem,remove it and use like a small screw driver to open the valve and see if you have pressure there.

chantal73

Hi,

my husband checked that and the fuel bursts out.. so yes there is enough pressure there

Jamie57

Is it a Limited? Does it have a factory security system?
And have you disconnected the battery?
If all three are yes then you need to reset the security system.
My 91 drove me bonkers for 3 days till I found out about this.
Exact same symtoms too.
Put the key in the drivers door and lock and unlock the dooor a few times.
It resets the system and it should run now.

chantal73

no really ?? haha that would be something if that's ALL it is ghehe
gonna try later today...thanks

chantal73

well the key trick doesn't work hahahaha

i'm getting a little crazy over my jeep

Nicks90xj

check injector pulse with a tester. see if its geting signal on wire side. if there is fuel and spark it should run if the timing is good. might be injectors but starting fluid will help with that if there is signal on harness side. check spark plugs? strong spark on coil? and plug side of spark plug wires?

Radi

I'm guessing he's right. Can you hear or feel them clicking when you crank the engine? ^^ prev post is good advice. The tester is called a "noid" light, it will flash when the injectors fire, assuming they are.

Nicks90xj

yes its a noid. best way to make sure