89 renix 4.0 NEED HELP
12-31-2013, 11:42 AM
#16
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Year: 1989
Model: Wagoneer
Engine: 4.0
ok i went and bought a used starter off of a buddy of mine and put it on and it turns over faster and better than it ever has and it seems like all the electronics are working better the seat belt beeper even sounds better and i put a new set of plugs in it just for the heck of it and it started up and ran better than ever but it is still flooding somehow after i started it i drove it around for a while and when i got home i shut it off and it started right back up but if you wait more than 5 or 10 seconds it wont unless you hold hold the gas wide open and crank it forever or wait a while im starting to think that one of the injectors are sticking open and flooding one of the cylinders
12-31-2013, 01:33 PM
#18
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Year: 1989
Model: Wagoneer
Engine: 4.0
12-31-2013, 05:11 PM
#19
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
ok i went and bought a used starter off of a buddy of mine and put it on and it turns over faster and better than it ever has and it seems like all the electronics are working better the seat belt beeper even sounds better and i put a new set of plugs in it just for the heck of it and it started up and ran better than ever but it is still flooding somehow after i started it i drove it around for a while and when i got home i shut it off and it started right back up but if you wait more than 5 or 10 seconds it wont unless you hold hold the gas wide open and crank it forever or wait a while im starting to think that one of the injectors are sticking open and flooding one of the cylinders
01-01-2014, 10:19 PM
#23
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Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Like Freedgr says, the 746's won't run a little rich while it is running on default pulse width, in "open loop", while it's warming up. (like the higher flow 703'3). It doesn't help things that running rich will slow down how long it takes to warm up! (maybe not much though). >>> https://www.cherokeeforum.com/f2/199...r-swap-163105/
01-02-2014, 01:09 PM
#24
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Year: 1989
Model: Wagoneer
Engine: 4.0
i put a coil off of a running cherokee on it and its still firing orange and the people i got it from put a new icm on it
01-03-2014, 01:33 PM
#30
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Year: 90,84
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You might triple check that MAP tube. If the MAP isn't getting perfect vacuum it will run rich. See what happens when you unplug the line off the MAP sensor. IIRC is should sputter and die. Also here is a link for testing the power and ground on the MAP. You might also want to test your CTS, (Coolant Temp Sensor), and check it's wires for trouble. http://www.lunghd.com/Tech_Articles/...iagnostics.htm
It's an "ECU" (Electronic Control Unit), through 90, then a "PCM", (power-train Control Module)91 on.
It's an "ECU" (Electronic Control Unit), through 90, then a "PCM", (power-train Control Module)91 on.