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I took some time yesterday to clean and tighten the battery terminals because they were corroded pretty bad. After cleaning, I restarted the X and noticed the miss was gone. I drove it about 30 miles today and still did not notice the miss I had before. I think it still needs plugs though. I am not complaining.
I took some time yesterday to clean and tighten the battery terminals because they were corroded pretty bad. After cleaning, I restarted the X and noticed the miss was gone. I drove it about 30 miles today and still did not notice the miss I had before. I think it still needs plugs though. I am not complaining.
When u posted uou had the 2 codes I really thought it was battery or electrical. Very rear to see both go out at same time. Good to see all better now.
Excursion got worse lately. I took the Speed Sensor plug off and cleaned it and the Excursion ran worse with a noticable miss. So I bought a new sensor and with the advice of someone who had changed theirs put a little grease on it to get it back in. Took it for a drive and thought it was a little better. My wife got in it to move it around my yard and it quit on her 3 times. I took it out yesterday thinking it might be low on gas even though the gage said 1/2 tank, I put about 4-1/2 gallons in it. I drove it a few miles and made a stop and it died. I had a few more miles to go after the stop and it died about 5 times before I finally got there. I would start it and it would idle fine then I would put it in gear and it would die. I left it sit for a few hours and went to drive home and had no problems. Should I take the sensor out and clean the grease off or check the wiring to the sensor. Can you turn the plug and put it on wrong? I am not sure where to start. I know there are codes because the CEL is on.
Cleaned all the grease off the speed sensor and reinstalled it then I took it for a short drive. It ran fine even at a few stops with the air-conditioner on and no problems. Brought it back home and went to park it on a downhill incline and left it in gear and watched the tach and it died. Started it back up and put it in reverse and it died. When it dies the CEL is on and the overdrive "off" light flashes and sometimes the "check gage" light comes on. I guess I need to check/replace the fuel filter next.
Had the codes checked today and P0720 is only code showing. This is the speed sensor circuit failure. Is there a fuse or relay in this circuit? If not, I am going to have to check the plug to the sensor. I had cleaned the plug eariier and it just made it worse. I have also replaced the sensor and it made no difference. Has anyone else had this problem?
I got hold of a code reader and the P0720 is present. The speed sensor was changed. I have ordered a new plug for the sensor. The live data is as follows: This is for a 2003 V10 engine
I am not at work to look up specs on MAF signal but that .021 looks wrong. I found this info online and I know it is not for the v10 but it still may help.
In test 4 it says reading at idle should be .9v to 1v. As rpm increase that reading should increase too so cranking it will be somewhat lower but not basically 0v.
I am not at work to look up specs on MAF signal but that .021 looks wrong. I found this info online and I know it is not for the v10 but it still may help.
In test 4 it says reading at idle should be .9v to 1v. As rpm increase that reading should increase too so cranking it will be somewhat lower but not basically 0v.
Does the MAF sensor always throw a code? I only have P0720 code.
Does the MAF sensor always throw a code? I only have P0420 code.
I would expect it to but the reading looks wrong, without my being able to look it up. You said p0420 which memory says is Cat related but earlier you said p0720 which memory says is trans related. I can look this up tomorrow but until then I still think the MAF is reading too low. Can you check it when cranking?
O.k. guys I think I fixed my problem. I was thinking about my MAF sensor and I decided to try and clean it, I only had some Electrical contact cleaner so I used that to spray on the MAF. I put it all back together and immediatly I noticed the miss was gone. I took it for a short drive and after several stops at idle and no miss or dieing. Lets hope it was that simple. I will post back after a few days of driving. Vwags, the code was P0720, I typed it wrong, thank you very much for the tip though.
I still notice a very slight miss occasionally. Last night it did die on me twice but straightened up and did fine going home. I also think I have a slight leak in one of my fuel lines. I was goint to checked my fuel filter and I noticed the line attached to the filter bracket was rusty and was damp with gas. There may be a loss of fuel pressure also with this leak.
UPDATE: Still having problems. I ordered the correct speed sensor for the transmission and not the ABS sensor for the differential. I installed the output transmission speed sensor, I did notice it was running better, no stalling. Drove about 3 miles, no problems, then I stopped and put it into reverse and it died. Started back up put it in reverse again and it died. Started back up to go home and put it in Drive and it stumbled but I gave it gas and drove home with no problems. Pulled into driveway and let it sit and idle in drive, after about 30 seconds it stumbled and died. OD light flashed. It dies after you put it in gear more so in reverse that in drive. I will have to borrow a code reader again and see what codes it threw. Should I order the input transmission speed sensor? Check the wiring in the steering column? I do not notice any fuses blown. I still need to check the fuel filter but I do not think it is fuel related. I know I have been told to check the COP's & plugs but I don't think that is the problem either. I will see if I can locate my fuel pressure guage and check that too. I will post another update when I check some of these other things.
Seems strange. I would do a general wiring check to see if you have something chafed or corroded that may be causing an intermittent fault. I would also check to see if your BCM is getting wet from a leaky windshield. Its under the dash outboard of the pedals. Hope you figure it out, I know its frustrating.
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