20 Most Recent 1993 Jeep Grand Cherokee - Page 9 Questions & Answers

Best guess is the Hd. Lt. Relay.
Probably will have to be replaced.

1993 Jeep Grand... | Answered on Apr 02, 2014

got a voltmeter,
make sure the ground wire is 0volts , key on, radio on.
then make sure all 12vdc power wires, on radio have 12vdc.
some have 3.lines. (and a 12v out to antenna motor (skip that)
radio power, memory, and dial lamp.
the radio power must be hot. or radio will be DEAD.

it's that simple , any DMM even the dirt cheap one at walfart does this.
the meter will never lie to you, and can also check your bad fuses.
0 ohms good'
infinity ohms bad fuse.
easy huh?

1993 Jeep Grand... | Answered on Apr 01, 2014

have you checked pad wear recently also brake fluid level

1993 Jeep Grand... | Answered on Mar 30, 2014

Youtube has a video showing how to replace the belt.

1993 Jeep Grand... | Answered on Mar 29, 2014

Is the ASD relay dropping out.???????
ever do a tuneup this decade,??? spark parts, filters,????
if the ASD dumps, here are the 7/8 reasons.
click ASD seen on this page.here.



on other cars its called MAIN. but jeeps its ASD.

on 93s this is old. but is OBD1 compliant.
but there is 1 scan tool that works it's mostly a code reader, but as you may not know, the key on 3 times trick
will hide the DTC that caused the failure. (lost spark is hidden, oops)

so using a real code reader, you can see what happened in real time.

i use this and the bigger brother.

1993 Jeep Grand... | Answered on Mar 27, 2014

try going to car wash and use the degreaser spray. clean up under the car real well in that area, and under the hood. spray it all off good and watch to see where the oil leaks from.

1993 Jeep Grand... | Answered on Mar 17, 2014

which engine???????????????????????????
ASD is tricky on jeeps.
The Auto shutdown,relay.
what is it , how does it works is covered in the fsm. read it.
The ECU runs this RELAY, and if the ECU sees a gross error
it shuts this down, and the schematic there is clear as to what.
both spark and fueling.
here is what can drop it out.
1: crank sensor.
2: cam sensors or TDC ,etc.
3: sees spark dead or weak.
4: Immobilizer active. (failed)

as the book says , make sure spark is good for the 2 seconds cranking. (not after the 2seconds)
the ECU is programmed like this.
user cranks.
ECU creates spark,, using the crank/cam sensors at the time base
for 2 seconds
if the spark read back fails or the 2 sensors fail, the ecu shuts DOWN.
this is for fire prevention.
most other cars just cut the injectors, but not jeep
the drop the MAIN ASD relay.

using the check engine light flash codes, you can see which of the
3 failed, cranking for 5 second and releasing the key on all cars.
1996 and newer a scan tool is use to same effects.

now the 64,000 dollar qustion,
see page 8w-30-4
why does the ASD KILL THE IGNITION coil. easy.
1: it only guess it 2 seconds to make spark
2: if it cant,. it then drops the relay. killing fuel too.
3: this prevents the the crash and burn you see on TV.

so its 2 second permissive system. (or 3?) i forget exact seconds, its in then book and is short.
many dont know this. but is a fact.

now the flash codes.
crank for 5 seconds while in flash code mode
see emmisions page for how.

flash code 11 drops the ASD ! (cam or crank sensor dead)
code 54 cam signal dead?
code 43, spark bad.

1993 Jeep Grand... | Answered on Mar 03, 2014

The button itself may be bad. If the button is ok, then the problem could be in the transmission control module located behind the dash or worse, it could be an internal problem with the transmission itself. I would start small by checking or replacing the panel that includes the overdrive button. The easiest and cheapest place to get one is a salvage or junk yard. If this doesn't solve the problem then it is best to take your Jeep to certified mechanic. When it comes to the Grand Cherokee, they used around 5 or 6 different transmissions and several different transmission control modules. I wouldn't recommend the do-it-yourself guy try working on those systems. I Just recently replaced the transmission in my 93 Cherokee and finding a used one that was actually the right model was like looking for a needle in a haystack

1993 Jeep Grand... | Answered on Mar 02, 2014

take the transfer case off and reseal it . because of all the contamination in the joint , you will never get it sealed properly by tightening the bolts .

1993 Jeep Grand... | Answered on Feb 26, 2014

double posted, and again, not a question.
form a full question.
try this page for questions. examples

1993 Jeep Grand... | Answered on Feb 25, 2014

ask a question please, a full question.
above is a statement.
like , how sells it
who can fix it.
what is DIY way? easy read the FSM.
who makes best after market part.
does jeep still sell it>?
questions come like that. and lots more.
what are the dangers (lots , ask)
Id park up hill. (to avoid siphoning. and not near any buildings.
104 times.

1993 Jeep Grand... | Answered on Feb 20, 2014

what country, and engine?
all same are different.
in USA , open hood , look up, see EPA sticker with vac MAP?
or RTM

1993 Jeep Grand... | Answered on Feb 19, 2014

was this a hack job?> cutting wires. (cutting harness wires?)
or did you use those nice install kits with the connector pig tails
that find the factory harness connector.
if you messed it up, only the FSM can save you now.
read the schematics.
see ZJ

no electrical tape allowed (heat shrink)
no wire nuts (horror to max on cars)
no cannibal splices. (the cut in to factor wires, nasty they are)
or it can be bad.

1993 Jeep Grand... | Answered on Feb 19, 2014

run the fault codes and check for canister purge valve solenoid fault . IF the filter is blocked it stays blocked . What you have is a problem that when the engine requires sufficient fuel there isn't enough and so it dies . After stopping what ever is causing the shortage is relaxed and so it starts and goes until the problem unit is activated again (Vacuum in the fuel tank)

1993 Jeep Grand... | Answered on Feb 19, 2014

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