2006 Hyundai Tucson 2.7 l keeps flooding
- Zfrtech1
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- Noah
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I would verify first that you have good, strong spark for the entire cranking duration. I see you changed plugs and coils but didn't mention checking spark.
Is the coolant temp data pid accurate? I see you changed the sensor, but no mention of if it is reading correctly.
I would also take a fuel sample and check for water, diesel or 2 cycle fuel as well as check fuel pressure. It doesn't happen often but I have seen excessive fuel pressure issues.
Exhaust back pressure would have to be quite excessive, but can stop an engine from starting. I would also measure the pressure in the exhaust.
Those compression readings sound very high to me for that engine.
That's the compression you measured on all six cylinders? If you have an in cylinder pressure transducer and oscilloscope, that may go a long way to verifying mechanical timing and integrity.
You say "checked valve timing, new belt". Did you pull the covers to check the cam timing and discover it had a new timing belt, or did you install a new timing belt?
Did this happened after the "new belt"?
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- Chad
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Those are all circuit codes. Have you done any circuit integrity testing?erased codes and they pop up right away
When is Calculated Load 59.6%? Is that cruising or at idle?
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Make sure that the "closing" wire from Idle Speed Control Actuator to the ECM is good. An Ohm meter can help determine if the circuit is, truly, OPEN or shorted to ground.
Here, is some info on P1507:
Here, are the engine control wiring schematics:
drive.google.com/file/d/1D2uKK5PNEuHY-Mg...g8n/view?usp=sharing
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. Can anything get screwed up by doing that because it sure does run worse since I took the plenum off to check the compression, spark etc.. so when I did the circuit integrity tests on the IAC wire plug notice the colors were different.. checked with the voltmeter for opens and grounds, strange thing is I have 11.9 volts on the brown wire. Nothing on the white and 8 volts on the red and black.... I thought maximum volts on the reference signals were five volts.. yeah sorry I don't do a whole lot of this... Yeah, not sure where to go from here. All right. Thanks for all your help. I appreciate your input. Cheers!😊✌️
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Sorry for the slow response.
had the connectors hooked up wrong on the IAC actuator and the TPS ... Can anything get screwed up by doing that because it sure does run worse since I took the plenum off to check the compression, spark etc..
Modules are, fairly, resilient when it comes to circuit faults. I think that connecting a connector to the wrong component has a very low likely-hood of doing any permanent damage. That being said, when Voltage meets un-resisted GROUND, bad things can happen.
Looking at the wiring diagram, the TPS has:
Pin 1 - Sensor Power ----> Voltage
Pin 2 - Sensor Ground --> Unknown resistance to Ground.
Pin 3 - TPS signal -->Likely, very well protected.
The IAC has:
Pin 1 - OPENING --->Unknown resistance to Ground.
Pin 2 - Fused Voltage from Engine Control Relay ---->Voltage
Pin 3 - CLOSING--->Unknown resistance to Ground.
Swapping connectors would:
Pin 1. Send Voltage, intended for the TPS power, into the OPENING circuit (Ground) of the IAC. It would, also, send the OPENING Ground signal to the power side of the TPS.
Pin 2. Send the TPS ground to the IAC power input. It will, also, send Fused Voltage from Engine Control Relay to the TPS ground. The TPS now has the Power and Ground backwards but, that shouldn't cause any harm, other than making the TPS signal invert. However, depending on the resistance of the TPS, there is potential for a problem if the ECM grounds the CLOSING circuit. That would put Fused Voltage from Engine Control Relay up against an unknown resistance to ground. That has potential of frying the TPS and/or blowing the fuse.
Pin 3. Put the TPS signal on the CLOSING side of the IAC. It would, also, send the CLOSING ground to the TPS signal.
It looks like the IAC would have Power (intended for the TPS) on the OPENING, and Ground (intended for the TPS) of the power feed of the IAC. That would make the OPENING circuit run backwards, constantly. Can the Power and Ground supply for the TPS, from the ECM, handle the current of the IAC?
make sure that you do not have a vacuum leak.I took the plenum off to check the compression
That is the fused Voltage from Engine Control Relay. Make sure that the fuse is not blown.I have ...Nothing on the white
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
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