1987 jeep camanche 4.0 no start problem :dunno:
07-05-2012, 02:41 PM
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Year: 1984
Model: Cherokee
Engine: 2.8v6
1987 jeep camanche 4.0 no start problem :dunno:
ok so I just bought a really nice jeep camanche for 500 bucks not running,the guy changed the coil, distributor,plug wires, and plugs i have spark and fuel so the cps is ok. I tdc #1 and it's it timing speck, if i hold the pedal to the floor it tries to start but just wont start running, any ideas?
07-05-2012, 03:07 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Yep. By holding the pedal to the floor you're in the "clear flood" mode and the injectors don't fire. The thing is probably flooding because the hose from the throttle body to the MAP sansor on the firewall is leaking somewhere or the MAP may be unplugged. First place to look.
07-05-2012, 03:16 PM
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Year: 1990
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Follow the hose from your throttle body back towards the firewall. Directly behind the engine on the firewall is the MAP sensor. Has a 3-wire plug on it and a vacuum hose.
PS: It's spelled Comanche.
PS: It's spelled Comanche.
07-05-2012, 03:28 PM
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Is the electrical connector to the MAP plugged in tightly?
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07-05-2012, 04:46 PM
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could the MAP sensor be bad? all my grounds are good, i have a new cps coming tomorrow so i will see if that works but i doubt it.
07-05-2012, 04:59 PM
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07-05-2012, 06:22 PM
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07-05-2012, 06:59 PM
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Year: 1988
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07-05-2012, 07:02 PM
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07-05-2012, 10:34 PM
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it is a very strong blue spark. I have very good fuel pressure, when i open the little valve on the rail it blows fuel out all over when you turn the key on and the motor turns over. SO IDK i have good fuel and spark but still no start 
it tries to start when i put the pedal to the floor but just wont take off????
it tries to start when i put the pedal to the floor but just wont take off????