2001 Jeep Laredo CHECKING RELAYS

PANAGURL

MEMBER
2001 JEEP GRAND CHEROKEE LAREDO
6 CYL
2WD
AUTOMATIC
170,000 MILES

HOW DO YOU CHECK THE VOLTAGE OF RELAY SWITCHES? WHAT SHOULD MY READING BE AND MY DAD LENT ME HIS VOLT READER BUT IT HAS DCmA, DCV, ACV, AND SOME WEIRD OMEGA LOOKING SIGN THEN IT HAS DIFFERENT NUMBERS IN EACH CATAGORY WHICH SHOULD I BE USING? AND ONE MORE QUESTION, DO I TAKE THE RELAYS OUT AND TEST THEM DO I LEAVE THEM IN WITH THE CAR RUNNING? THEY DONT HAVE LITTLE OPENINGS SUCH AS FUSES SO IM NOT TOO SURE HOW TO EVEN BEGIN TO GO ABOUT CHECKING THEM.

3 Replies

BMRFIXIT

MECHANIC
19,053 POSTS

What is the issue?
What relay you are looking to check?
Mark a good relay and switch it with the suspected one

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Sunday, June 1st, 2008 AT 9:08 PM

PANAGURL

MEMBER
18 POSTS

I HAVE A 2001 JEEP G. CHOROKEE LOREDO IT ALMOST NEVER STARTS ON THE THE FIRST TRY AND IS ALWAYS CUTTING OFF ON ME WHILE DRIVING AND THEN WILL NOT RESTART RIGHT AWAY SOMEONE TOLD ME THAT IT COULD POSSIBLY BE MY FUEL PUMP RELAY SWITCH. IT IS NOT OVER HEATING AND THERE IS NO VACUUM LEAKS MY BATTERY AND ALTERNATOR ARE FINE, I GOT A DIEGNOSTIC CHECK AND IT CAME OUT FINE AND I ALWAYS HEAR THE FUEL PUMP CUTTING ON WITH THE TURN OF MY KEY SO I DONT THINK ITS THAT. I HAVE NOTICED THAT WHEN I PUSH IN THE PIN TO BLEED THE FUEL LINE THAT I DO SEEM TO HAVE AIR IN THERE BUT I BELIEVE THAT I HAD BURPED IT ENOUGH BY NOW THAT IT SHOULDNT BE MY PROBLEM, RIGHT? I DONT KNOW. SOMEONE PLEASE HELP! WHAT COULD MY PROBLEM BE? AM I OVER LOOKING SOMETHING?