#1
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2010 stalls, runs rough
My 2010 2.5 automatic quit in the middle of a busy
intersection today, $150 tow home, and after an hour of internet searching, I'm starting to think ECU relay. It quit at first, tried cranking many times, it would act like a partially clogged fuel filter- run rough, not rev up. Towed it home, and it started, would run rough for a little, quit, run halfway decent, then stall. No codes or engine light. Sounds like the earlier models symptoms of a bad ECU relay. I would like to confirm by swapping relays as shown for the earlier models, but cannot find a diagram showing exact location of ECU relay for my model. My IPDM looks like the one on the right in the attached image, all the relays are labeled, and none are ECU(ECM). Can anyone point me to a diagram showing which relay is for the ECU for my 2010? Is there one? Thanks! Last edited by sundug; 09-04-2015 at 09:29 AM. |
#2
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It sounds more like a cam position sensor or crank position sensor malfunction, which isn't uncommon. They will cause the ignition to cut out as it heats up and can start working as it cools down, sometimes not triggering a trouble code. The earlier ECM relay issues were caused by a poorly constructed relay, which was later corrected. Wish I could help on the relay location; I wouldn't be surprised if they built it into the IPDM. You may be able to download the "EC" chapter of the service manual from the knowledge base at the site, which should have the info.
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#3
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Sensors
OK, I will look into both of those sensors. Thanks
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#4
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Fixed it!
After replacing the crank position sensor and getting no change, I was contemplating putting the good crank sensor I removed in place of the cam sensor. Instead I went back thru the suggestions and decided to check the mass air flow meter. It looked fine until I looked down inside it, there was a small lump, about the size of a match head, of dust bunny/mouse nest inside the sensor! I bought the truck with 30k on it, when I went to check the air filter, someone had not fit the filter in well and the bottom middle was warped up. I rarely use the truck and kept in in my barn. Mice had built a nest in the intake tube, I thought I cleaned it all out, but apparently there was a speck left. I covered the open end of the intake with 1/4" hardware cloth to prevent further nest building there, but they are building nests in the cabin air filter. I just blew air into the MAF and it now runs fine. I am so glad I didn't try and change the cam sensor, it looks like a tuff one, the crank sensor was bad enuf! Doug
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2010, rough, runs, stalls |
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