Sport had some CEL: 0431, 0401, 0740. plus other crap
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Post by colted on Feb 21, 2016 21:29:40 GMT -5
Guess a vacuum leak will throw the P0401 code again? Fuel filter was just replaced recently during the plug change as well as valve cover to address my oil leak issues. Thanks for the tip on the carb cleaner, will try that. Only if the leak pertains to the operation of the egr. There can be vac leaks elsewhere that can cause issues without throwing codes. I'll probably just go ahead with my MCCC treatment this weekend, let y'all know.
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Post by colted on Feb 22, 2016 21:34:49 GMT -5
Only if the leak pertains to the operation of the egr. There can be vac leaks elsewhere that can cause issues without throwing codes. I'll probably just go ahead with my MCCC treatment this weekend, let y'all know. Update: after I almost ruined my MAF sensor when I was trying to remove the bolts (pliers hit the mesh screen a couple of times) without a success, I had to raise the flag & surrender and just decided to plug the junk yard maf sensor, vehicle started to startle and idle roughly until it stalled.....found that the numbers were off, pout back the orginal MAF sensor and decided to forego with the plan.....drove the Montero to work this morning and surprisingly, idle really smooth, still no codes.....will just hold off then with the MCCC treatment since it might just ruin something and throw more codes,lol Btw, ordered an Ultragauge last night and see how useful it will be.
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Post by redraif on Aug 30, 2016 17:06:14 GMT -5
Colted...so how is the truck behaving?
Mine... well lets not discuss that... LOL!
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Post by dirk on Aug 30, 2016 19:30:36 GMT -5
This may sound silly, but check your fuel filler line to the tank. After doing the body lift, and using the aforementioned hose, I got a CEL (forgot what # though) for evap. It ran a bit sluggish but not too bad, kinda like turning on the AC wit big tires going up hill at slow dpeeds.
It turns out that I forgot to remove the parts # sticker off the hose and put the clamp.on that exact location. It slid off the hose and allowed the tank to hose seal was broken. Anyways after sticker removal, and reseting hose/clamp. I reset the CEL and has been weeks without any issues and immediately power was back to normal. Just another thing to double check.
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Post by redraif on Aug 31, 2016 12:56:40 GMT -5
will do! thx I think I will be going over every vac line on the beast... every main ground in the engine bay!
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Post by colted on Aug 31, 2016 22:31:06 GMT -5
Colted...so how is the truck behaving? Mine... well lets not discuss that... LOL! since I broke off the NAPA IAC and put in the old cleaned OEM one and replacement of all hoses with blue ones, truck has been CEL free since February.....been very kind to me....
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Post by redraif on Aug 31, 2016 23:09:40 GMT -5
So your saying you're truck was possessed and you sent the poltergeist to mine... lol
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Post by redraif on Sept 1, 2016 13:01:02 GMT -5
From this thread: msport97.proboards.com/thread/8162/p0403-valve-solenoid-pictoral-reference?page=1wrench What fault code is present, if its 403 then you have a circuit malfunction check the wiring. you can manually check the egr function by pinching the yellow striped vac. hose leading to the throttle body with engine idling this will cause the EGR valve to open if it does then the valve and vac. system is good. You are looking for a ground and 12v at the connector with engine running. you can check the solenoid function by supplying it with 12v and ground and listen for a click. I think you can tell if the valve is bad by pinching one of the vacuum tubes running to it while the engine is idling.. it will kill the engine. Anyway, from an old Buggzyy post regarding EGR valves: Make sure the 2 hoses that connect to the throttle body are on the correct port. You should be able to pinch the yellow hose and the EGR should apply fully and stall the engine. Most common failure or problems are the vac. lines installed backward or the solenoid is faulty. I verified my routing ... ... Pinched the yellow line and the sport slowly started to run worse... got almost to the stall point and recovered. EGR malfunctioning? It was replaced at 225,000 miles with new. About 25,000 miles ago... NAPA version.OK so no one really answered this question above (red) I watched a video and the guy pinched the line and the Sport completely stalled. Since mine simply stumbled and recovered? what does that mean? EGR stuck open? I ask because it has been referenced several times that a EGR stuck open can cause random misfires... My P0300... it could be all related to this dang EGR issue. Since we got the truck it has come and gone... Anyone have a good way to clean the exhaust side with everything installed on the truck? Is the exhaust side even removable? I saw bolts in the stock photos I had of the ebay one for sale and it looks like there are bolts... pick of the routing... yes mine is routed correct (Buggzyy noted above that you need to be sure routing is right)
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Post by jkdv8 on Sept 2, 2016 20:29:22 GMT -5
Nah, the egr opening (by pinching the line) at idle is what causes it to stall out. Maybe it isn't opening all the way or you're not pinching the line completly shut.
The manifold absolute pressure sensor aides in egr function as well. It's the sensor with the red connector at the left of the picture.
I would advise getting an oem egr solenoid before you replace anything else. The Napa ones have issues. I came close to replacing a bunch of stuff that didn't need it until I found the napa solenoid causing the issue. My issue came and went as well over the course of like six to eight months before I figured it out.
Also, is that a hole or paint on the Evap hose.
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Post by colted on Sept 2, 2016 22:41:28 GMT -5
So your saying you're truck was possessed and you sent the poltergeist to mine... lol ahaha....I sent them altogether with the vacuum control valve I shipped you, LOL!
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Post by colted on Sept 2, 2016 22:46:03 GMT -5
Nah, the egr opening (by pinching the line) at idle is what causes it to stall out. Maybe it isn't opening all the way or you're not pinching the line completly shut. The manifold absolute pressure sensor aides in egr function as well. It's the sensor with the red connector at the left of the picture. I would advise getting an oem egr solenoid before you replace anything else. T he Napa ones have issues. I came close to replacing a bunch of stuff that didn't need it until I found the napa solenoid causing the issue. My issue came and went as well over the course of like six to eight months before I figured it out. Also, is that a hole or paint on the Evap hose. I wsould agree with this......I thought the NAPA one would resolve my issue but still have P0401 popping every time until I accidentally broke off the lower plastic connection while pulling the hose to replace them all with new one, had no choice but to put in my OEM EGR w/c I thought all along that it was already bad & needs to be replaced, good thing I kept it as spare or for emergencies...I was already contemplating of returning the NAPA OEM to the store then but too bad the plastic lower nozzle was to brittle & broke....after all small hoses were replaced with the old OEM EGR, never had P401 CEL since February.,...
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Post by redraif on Sept 3, 2016 10:14:03 GMT -5
Nah, the egr opening (by pinching the line) at idle is what causes it to stall out. Maybe it isn't opening all the way or you're not pinching the line completly shut. I used pliers to pinch it, so I thought I got it tight enough... i will try again... I will snag a few at the yards when I go. Can't hurt to have spares I have a NAPA egr... I'm going back to the yards today... maybe I will find a mitsu one... worst case the old one is around here somewhere... just not sure if its mitsu OEM. the mechanic had fun putting paint on everything to keep the lines straight. Though we proved he got 2 reversed.
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Post by redraif on Sept 6, 2016 11:01:40 GMT -5
So to report in... I spent Saturday at the junkyard (Pull-A-Part South). There were 3 sports there. one 3.5 & two 3.0L. These are the beasts I robbed of their coils & ICM/PTU last weekend. Well this weekend I got: Misc clips & brackets and 5 plug wires... (for external coil testing, if needed). 2 EGR vacuum check valve thingies (red) 2 MAFS from 3.0 2 MAP sensors & 2 TPS. 3 EGRs, 3 egr solenoids, 3 evap solenoids (?)on bracket with EGR solenoid 3 IACs
I know the MAFS are 3.0 versus 3.5 specific... as Colted found out. Any other above sensor specific?
Soooo hopefully something that I robbed will be worth the effort. Once I get the sport right. I will systematically test all sensors and dispose of the bad and keep the others as known good for future.
So I will start with the EGR related items... would be crazy if this all circled back. Colted.. you also mentioned the IAC, so I will clean it.
Also the MAP was mentioned, can it be cleaned?
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Post by jkdv8 on Sept 6, 2016 15:39:44 GMT -5
I wsould agree with this......I thought the NAPA one would resolve my issue but still have P0401 popping every time until I accidentally broke off the lower plastic connection while pulling the hose to replace them all with new one, had no choice but to put in my OEM EGR w/c I thought all along that it was already bad & needs to be replaced, good thing I kept it as spare or for emergencies...I was already contemplating of returning the NAPA OEM to the store then but too bad the plastic lower nozzle was to brittle & broke....after all small hoses were replaced with the old OEM EGR, never had P401 CEL since February.,... Yea those Napa ones are trouble. I used pliers to pinch it, so I thought I got it tight enough... i will try again... I forgot to mention the engine needs to be at operating temp as well before you try this. I would suggest testing the sensors you have through process of elimination to determine if it's the sensor or not. There is a chance you could get a bad sensor from the pull a part and never know it. I test the sensors and compare it to the service manual specs before replacing it.
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Post by colted on Sept 8, 2016 6:49:45 GMT -5
So to report in... I spent Saturday at the junkyard (Pull-A-Part South). There were 3 sports there. one 3.5 & two 3.0L. These are the beasts I robbed of their coils & ICM/PTU last weekend. Well this weekend I got: Misc clips & brackets and 5 plug wires... (for external coil testing, if needed). 2 EGR vacuum check valve thingies (red) 2 MAFS from 3.0 2 MAP sensors & 2 TPS. 3 EGRs, 3 egr solenoids, 3 evap solenoids (?)on bracket with EGR solenoid 3 IACs I know the MAFS are 3.0 versus 3.5 specific... as Colted found out. Any other above sensor specific? Soooo hopefully something that I robbed will be worth the effort. Once I get the sport right. I will systematically test all sensors and dispose of the bad and keep the others as known good for future. So I will start with the EGR related items... would be crazy if this all circled back. Colted.. you also mentioned the IAC, so I will clean it. Also the MAP was mentioned, can it be cleaned? never touched my MAP sensor.....my Monty was still on the cheap IAC from ebay for less than $20....yup, MAFS and EGR solenoids are diff. between 3.0 & 3.5....man, wonder how much you paid for all that?don't forget they have 30 days return policy and will just get store credit
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