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02-17-2013, 01:28 AM
#19
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Year: 90,84
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Well golly. I think there are a number of MAP tests, I would need to search it myself. Three wires? One ground, (to check), one 5V feed from the PCM, and the third provides the info to the PCM. I guess with a vacuum pump you can actually watch the voltage on that third...
I'm no wizard! 1/2 that post count is me asking the wrong question! I might be checking that ground, and the feed to it...maybe someone else might chime in...Your problem may well be there though, Idk...
I'm no wizard! 1/2 that post count is me asking the wrong question! I might be checking that ground, and the feed to it...maybe someone else might chime in...Your problem may well be there though, Idk...
02-17-2013, 01:32 AM
#20
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Year: 1996
Model: Cherokee
Engine: i-6 4.0
Well golly. I think there are a number of MAP tests, I would need to search it myself. Three wires? One ground, (to check), one 5V feed from the PCM, and the third provides the info to the PCM. I guess with a vacuum pump you can actually watch the voltage on that third...
I'm no wizard! 1/2 that post count is me asking the wrong question! I might be checking that ground, and the feed to it...maybe someone else might chime in...Your problem may well be there though, Idk...
I'm no wizard! 1/2 that post count is me asking the wrong question! I might be checking that ground, and the feed to it...maybe someone else might chime in...Your problem may well be there though, Idk...
02-17-2013, 01:39 AM
#21
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Maybe. Is there a little "L" tube on the bottom? If so, does it look OK?
Yea, the map is one of the only thing's I've noticed can really mess things up. The puter' uses it to "rough out", how much fuel, then the 02 sensor fine tunes it..if I have that right.
Yea, the map is one of the only thing's I've noticed can really mess things up. The puter' uses it to "rough out", how much fuel, then the 02 sensor fine tunes it..if I have that right.
02-17-2013, 01:50 AM
#23
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I've never even seen one on a TB. Anyway I might check the ground and the feed from the PCM....of course I new one won't help if there are wiring problems....which comes up allot.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
Last edited by DFlintstone; 02-17-2013 at 01:57 AM.
02-17-2013, 02:11 AM
#24
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Year: 1996
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I've never even seen one on a TB. Anyway I might check the ground and the feed from the PCM....of course I new one won't help if there are wiring problems....which comes up allot.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
but i cant measure it with it hooked up, but i can measure the pcm side (harness) and the map separately
02-17-2013, 02:16 AM
#25
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Year: 1996
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I've never even seen one on a TB. Anyway I might check the ground and the feed from the PCM....of course I new one won't help if there are wiring problems....which comes up allot.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
If there is a "A" that might be ground. "C" would be the 5 volt feed. That's for my old Renix, but yours may well work the same.
02-17-2013, 03:56 PM
#27
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Year: 1996
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Went and got the fuel pressure gauge
Came back and started it, and it started,
Running pressure
Shut it off and wouldn't start back,
Prime pressure was about 30
Came back and started it, and it started,
Running pressure
Shut it off and wouldn't start back,
Prime pressure was about 30
02-17-2013, 04:17 PM
#28
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Year: 90,84
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There was a guy posting a while back who had all sorts of trouble with his Coolant Temp Sensor. (for the engine, not the gauge or fan). Maybe it was CPTSlackass. Anyway he needed to unplug it...and might have gone through a couple of them before he finally got her to work right. I think yours is still on the side of the block. If you have spark, it's flooding, and it's not the map I gotta wonder....
I just don't know but maybe that or the IAT on the intake would make it flood.
Also I might check spark immediately after it dies. I wouldn't expect a new MoPar CPS to fail, but your intermittent stuff sure is weird.
Did you check the ground and feed to the MAP?
I just don't know but maybe that or the IAT on the intake would make it flood.
Also I might check spark immediately after it dies. I wouldn't expect a new MoPar CPS to fail, but your intermittent stuff sure is weird.
Did you check the ground and feed to the MAP?
02-17-2013, 04:24 PM
#29
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Year: 1996
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There was a guy posting a while back who had all sorts of trouble with his Coolant Temp Sensor. (for the engine, not the gauge or fan). Maybe it was CPTSlackass. Anyway he needed to unplug it...and might have gone through a couple of them before he finally got her to work right. I think yours is still on the side of the block. If you have spark, it's flooding, and it's not the map I gotta wonder....
I just don't know but maybe that or the IAT on the intake would make it flood.
Also I might check spark immediately after it dies. I wouldn't expect a new MoPar CPS to fail, but your intermittent stuff sure is weird.
Did you check the ground and feed to the MAP?
I just don't know but maybe that or the IAT on the intake would make it flood.
Also I might check spark immediately after it dies. I wouldn't expect a new MoPar CPS to fail, but your intermittent stuff sure is weird.
Did you check the ground and feed to the MAP?
