The hose going to the brake booster is a great place to test vacuum.
diagram from front vacuum motor to transfer case of 1993 Jeep Wrangler
4.0L ?
You probably have a vacuum leak.
check you vacuum lines
Where are the vacuum hoses on a 1995 ford thunderbird 4.6l engine?
It is part of the engine computer.
A 1995 Jeep Wrangler 2.5 has 123 hp and 139 ft-lbs. of torque.
No. 1995 cherokee engine is fuel injected with different gas tank, fuel pump, engine computer, water pump and wiring harness. 1990 wrangler has a carb.
The starter is out?
The Spark Plug gap is the same for both the 2.5 and the 4.0 Engine in the 1995 Jeep Wrangler. According to the Chilton Manual the Gap is 0.035
The engine light is on when the engine computer has detected a malfunction and set a trouble code.
0.033 to 0.038 for all engine types