Jeep will not start I have no spark!

Check coil for power and also check the ICM and distributor pick-up coil

CHECK YOUR FUSES--REMOVE AND REPLACE 'EM A FEW TIMES TO SORTA SCRAPE OFF ANY CORROSION THAT COULD BE ON THEM

CHECK YOUR CONNECTIONS--TAKE LOOSE, CLEAN, TIGHTEN WELL

FUSIBLE LINKS?

DO YOU HAVE VOLTAGE TO THE COIL W/ THE KEY ON?

ANYTHING DIFFERENT THAT MIGHT HAVE LEAD UP TO THIS?

CHECK ENGINE LIGHT ON?--IF SO, CHECK CODES, WRITE DOWN THE NUMBERS

THE MEDIC

I'M ENLISTING HELP FROM ANOTHER. WAITIN' FOR HIM TO SHOW

SO DON'T GET ALL UPSET!

IF YOU HAD A CJ I'D ALREADY HAVE YOU GOING

ATTEMPT ALL OF THE OTHER SUGGESTIONS--IF YOU ARE LOST ON TERMS---JUST ASK---WE'RE HERE TO HELP (I'M TRYIN')

JUST THROWING STUFF---NEUTRAL SAFETY SWITCH. MAYBE SHIFT BACK AND FORTH A FEW TIMES OR TRY TO START IN NEUTRAL

CRAWL UNDER AND SEE IF A STICK OR ROAD DEBRIS KNOCKED SOMETHING LOOSE ON THE TRANNY---OR OIL SOAKED

MAYBE LOOK YOUR ENGINE OVER FOR SOMETHING LOOSE---OR UNPLUG AND RECONNECT CONNECTIONS LIKE AT THE COIL ETC

YOU DID CHECK FOR VOLTAGE AT THE COIL W/ THE KEY ON?

THE MEDIC

Have the PCM coil driver and sensor ground tested-the primary circuit starts there-the PCM powers the coil

I HOPED OTHER SUGGESTIONS WOULD HAVE JUMPED IN

I HOPE YOU HAVE MADE HEADWAY WITHOUT TAKING IT TO A SHOP

I AM GOING TO ATTEMPT TO GET YOU SOME WIRING DIAGRAMS OF THE IGNITION SYSTEM.I TRIED YESTERDAY AND SEVERAL TIMES BEFORE THAT TO LOG ONTO "MITCHELL I", IT JUST WOULDN'T LET ME.I'M TRYING RIGHT NOW.

THE MEDIC

OK--GOT 3 OF MANY DIAGRAMS FOR YOUR RIG

THESE 3 ARE "ENGINE PERFORMANCE". WHAT YOU NEED FOR SEEING THE IGNITION STUFF

THEY ARE EZ TO READ, AND LOCATIONS OF COMPONENTS ARE GENERALLY WRITTEN RIGHT BESIDE THE COMPONENT. EVEN THOUGH THE WIRES ARE NOT COLORED, THEY COLOR IS LABELED RIGHT BESIDE THE WIRE.

I ALWAYS HAD A PROBLEM READING THE CJ DIAGRAMS IN THE REPAIR MANUALS. FINALLY I SCANNED ONE THAT I HAD NOT "CHICKEN SCRATCHED" COLORED MARKERS AND PEN LINES ON THEM. MY BIGGEST PROBLEM WAS WHERE MANY MANY WIRES RAN PARALLEL TO EACH OTHER, IT WAS REAL EZ TO GET ONTO THE WRONG WIRE WHILE FOLLOWING THEM.

AFTER SCANNING, I TOOK THE TWO HALVES TO "MICROSOFT PAINT" AND COLORED OVER EACH WIRE WITH THE CORRECT COLORS. AFTER A FEW DAYS OF PLAYING WITH THIS. I EMAILED THEM TO THE OFFICE STORE WHERE I HAD THEM ENLARGED. I THEN FITTED THE HALVES TOGETHER, THEM HAD THEM LAMINATE IT FRONT AND BACK.

PRETTY MUCH CJs IS MY THING AND THE 1979 DIAGRAM "MOSTLY" IS THE SAME FROM '76-'86. ANY DIFFERENCES, USUALLY THE COMPUTER CRAP ADDED IN THE LATTER YEARS, I GO BACK TO THE REPAIR MANUALS. WITH THE THINGS I DEAL WITH MOSTLY, MY "GIANT DIAGRAM" IS THE TICKET! I WISH I HAD DONE IT YEARS AGO. 'COURSE TILL THREE YEARS AGO, I HAD NO CLUE HOW TO USE THE COMPUTER

THANK GOODNESS I DO CJs, AND NOT THIS NEWER STUFF!

AS FAR AS THESE DIAGRAMS I AM SENDING YOU. LET ME KNOW IF YOU CANNOT READ THEM WELL--ONCE YOU DO--I WILL INITIATE A PRIVATE MESSAGE TO YOU (YOU ARE UNABLE TO DO THIS YET) I WILL GET YOU EMAIL ADDRESS AND SEND YOU THE 3 DIAGRAM DOWNLOADS. YOUR PRIVATE INFO WILL NOT BE BROADCAST IN WIDE OPEN FORUM

ON DIAGRAM ONE, THE RELAYS AT THE TOP COULD BE ONE POSSIBILITY OF YOUR PROBLEM. SWAPPING THEM WITH AN IDENTICAL TWIN IN YOUR SYSTEM MAY PROVE OR DISPROVE THEM BEING THE ISSUE, WITHOUT BUYING A NEW ONE RIGHT OFF OF THE BAT.

CONTINUE TO POST WITH PROGRESS OR OTHER QUESTIONS. STILL MAY GET A GOOD ANSWER. LET US KNOW WHAT YOU HAVE DONE OR FOUND OUT. WE LEARN FROM THIS STUFF TOO!

THE MEDIC