Question about 1991 Jeep Wrangler

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Where is the diagnostic connector located on a 1991 Jeep wrangler 2.5L? i want to check for codes.

The engine will turn over but will not start there is no spark at the coil wire and spark plug wire i use a spark plug tester no spark and i also use a screw driver and stuck it into the plug wire while cranking i didn't feel no shock to my hand while cranking what could be causing no spark?

Posted by Joe Russell on


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You asked 3 times
I deleted my response here so I can work your #1 asked
same quesions.
you posted 3 times, for one car failure
no start, dead spark ,dead ECU, dead, warning cluster, 100% dead, but cranks ok.
easy to fix with a meter.

Posted on Mar 06, 2017


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No check engine light 98 wrangler

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1 Answer

Where is the oil sending unit located on a 1991 jeep wrangler 4 cylinder?

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1 Answer

My 1991 wrangler started overheating - i had the AC on and was stuck in traffic turned the heater on (ac off) and the temp returned to normal - where should i start?

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Sep 18, 2010 | 1991 Jeep Wrangler

1 Answer

1989 jeep wrangler starts jumping and backfiring

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Nov 19, 2009 | 1991 Jeep Wrangler

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I have a 1988 jeep cherokee, if your are standing in front of the vehicle, on the left fhand side, there is a relay center. well right beside that realy center is two little white plastic boxes with yellow...

Diagnostic Connector To read Diagnostic Trouble Codes (DTC's), the test connector for the electronic engine control system must be used. The test connector is more commonly referred to as the Data Link Connector (DLC). On all Jeep models through 1990, the DLC is a 6-pin and a 15-pin connector located under the hood on the right side of the engine compartment. On 1991–93 models, the DLC is located under the hood on the left side of the engine compartment near the powertrain control module. On 1994–98 vehicles, the DLC is located in the passenger compartment, under the driver side dashboard.

Data Link Connector (DLC) location — Jeep models through 1990

Please don't forget to rate and let me know if this helped you.


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So, when the engine is hot, it won't work. Do you have any idea what the ambient temperature is?
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The Starter relay is bad.

May 05, 2009 | 1991 Jeep Wrangler

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