Cranks but no start no check engine light when you turn on the key
There are several things that could cause this problem - having a Diagnostic scan and code check should be the first step.
There are just too many things to check without that scan done - you could throw a lot of money at it and still be D.O.A.
SOURCE: 2006 jeep wrangler check engine light came on it
There is a software update for the PCM that addresses this issue. TSB 18-028-06
SOURCE: 2007 Jeep Wrangler Unlimited Sahara
SUBJECT:
Long Crank Time Due To Possible Contact Of Camshaft Sensor To Camshaft Gear
OVERVIEW:
This bulletin involves the replacement of the engine camshaft sensor.
MODELS:
2007 (JK) Wrangler
NOTE: This bulletin applies to vehicles equipped with a 3.8L engine (sales code
EGT).
SYMPTOM/CONDITION:
The customer may experience one of the following conditions:
a). Long engine crank time.
b). Two engine start attempts prior to engine starting.
c). Due to the “TIP Start Feature” on automatic transmission equipped vehicles, once the
ignition key / switch has been released from the “START” position, the starter may stay
engaged for up to 10 seconds while the engine attempts to start.
The above conditions may be due to the position of the camshaft sensor to the camshaft
gear. The sensor spacer gasket may have come loose during engine assembly and
caused the camshaft sensor to be adjusted too close or in contact with the camshaft gear.
DIAGNOSIS:
If the above condition is present perform the Repair Procedure.
PARTS REQUIRED:
Qty. Part No. Description
1 04686353 Sensor, Camshaft
SOURCE: 1993 jeep wrangler won't start. replaced crank
Did u check all the main fuses and relays under hood?
SOURCE: 1995 Jeep Wrangler 2.5L Fuel Pump/Check engine light
Could be one of several items...I'd check the fuel pump relay, auto shutdown relay and the ignition switch itself. I'd bet on it being one of those relays but, we all have been fooled at least once!!! I'd also make sure that body and engine grounding is good and clean. Relays can't work properly without a good ground.
SOURCE: Hard starting when cold ( engine cranks normally )
see if your engine has a ECT sensor (temp sensor that delivers information to your ECM) they are installed on the intake side of the cylinder head, it usually has 2 cables, have it checked replace if necesary
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