93 Cherokee OBD 1 code 11

JEEPIN'

MEMBER
1993 JEEP CHEROKEE

Have a Jeep Cherokee '93' with 140,000 miles and a 4.0 liter L6. It starts and runs fine then it just turns off with no warning, it cranks but won't fire for 2-3min then starts right up. Reading a code 11 which according to my code book is no crank or cam position signal, I've replaced both sensors which erased the code for about 20min then it stalled again and the code is back. Could the ECM be at fault?

Looked up the code on line and came up with no IGN signal for an 11 which is it?

Any help would be great, thanks :)

6 Replies

RASMATAZ

MECHANIC
75,992 POSTS

When it stalls immediately check for spark and injector pulse-meaning is the injector/s clicking or you can use a noid light to check it then comeback with your findings this will give me an idea where to start.

SPONSORED LINKS

Was this

answer

helpful?

Yes

Thursday, October 4th, 2007 AT 3:20 AM

JEEPIN'

MEMBER
4 POSTS

No spark no clicking fuel rail. Am getting a code 42 in adition to 11 now, 42 is automatic shutdown relay circuit problem, which makes sense cause the circuit powers the ignition coil, fuel pump, and injectors. Replaced the relay. Nothing My only theory is a short in the circuit that is some how affected by heat, the more it stalls the sooner it stalls. The circuit can't be open or the vehicle wouldn't run at all, right? If the relay is not the problem where could both circuits (in tank fuel pump works) be disabled by a short?

Was this

answer

helpful?

Yes

Thursday, October 4th, 2007 AT 5:57 PM

RASMATAZ

MECHANIC
75,992 POSTS

At the ASD relay socket-check for power at pin#1 if not you have an open wire between the ASD and ignition switch. Power there -ohm out the relay if it checks-you have a problem with the computer's ground driver

Do this at ASD pin 5 socket turn key On get a jumper wire insert it to pni 5 socket then place relay back in the other end tap it to ground, do you hear the injector clicking while tapping it to ground also the fuel pump should be coming On and Off when tapping it.

If not were right back to the ground driver in the PCM. Could also be coming from the ignition switch losing its sweet spot.

Good Luck

Was this

answer

helpful?

Yes

Thursday, October 4th, 2007 AT 7:18 PM

JEEPIN'

MEMBER
4 POSTS

My relay is set up as follows, #30 battery power, #86 switched power source, #85 ground, #87a connected to 30 when off, #87 connected to 30 when on. After my heep stalls I still have 12v at #30 and #86, the relay reads 75ohms looked it up and its good. Ran a jumper wire off #85 to a ground and yes the fuel pump comes on, the only click was the fuel pump relay is that what you ment?

Turned off the IGN and got 165 ohms from #85 and only 88 ohms from #86 so I traced the wire from 85 and it goes back into the box at the engine control fuze, there are 2 large ground wires leaving the box are all the curcuits grounded through these? Or does the ASD have its own ground? The wire I traced from 85 didn't appear to be damaged but if all the curcuits are grounded together then that would have to be causing the extra resistance? Would 165 ohms be enough to cause a problem?

How can I test the ING switch? What do you mean by ground driver in the PMC? Thanks

Was this

answer

helpful?

Yes

Friday, October 5th, 2007 AT 8:19 PM

RASMATAZ

MECHANIC
75,992 POSTS

Check fuse #2 at power distribution center.

At PCM pin out no.3 put key to On.=-do u have power

At PCM pin out 51 crank engine over while looking for power there-no power ASD relay defective.

Hope this will help you tried to bring it up closer but couldn't do it. No PC experience on magic stuffs and so on. Sorry maybe someone in here can jump in and give a better picture.

Good Luck