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SportTrac Discussion
Engine & Drivetrain
Aloha: Check Engine Codes O2...
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<blockquote data-quote="DaBoss" data-source="post: 1051220" data-attributes="member: 74989"><p>Aloha folks, </p><p></p><p>The past couple of weeks I've noticed when engine is warmer, been running and I come to slower speeds I hear a clicking noise or something from the engine compartment. I've seen my rpm gauge quickly fluctuate at lower rpm's or sputter. Finally last Friday the Check engine light came on, when my mechanic checked the codes, this is what came up: PO135, 141, 155, 161 and 443. </p><p></p><p>My mechanic checked all 4 of the original O2 sensors and said they were fine including the heaters that are part of them. So, he reset everything, drove it for a while over the weekend and the light didn't come on. Started well, purred.</p><p></p><p>Today I heard the clicking noise for a moment and the engine at low rpm sputtered. Check Engine light hasn't come on yet.</p><p></p><p>Question: is all of this only related to the 4 O2 sensors and wire harness connection or could something else be going on? Again all 4 02 sensors are original and vehicle has 175K on it, 4.0L V6. Can all sensors start to go out at the same time? If I have to replace the sensors should I go with the Ford Motocraft ones. </p><p></p><p>Look forward to all advice and if something else could be happening. Mahalo</p></blockquote><p></p>
[QUOTE="DaBoss, post: 1051220, member: 74989"] Aloha folks, The past couple of weeks I've noticed when engine is warmer, been running and I come to slower speeds I hear a clicking noise or something from the engine compartment. I've seen my rpm gauge quickly fluctuate at lower rpm's or sputter. Finally last Friday the Check engine light came on, when my mechanic checked the codes, this is what came up: PO135, 141, 155, 161 and 443. My mechanic checked all 4 of the original O2 sensors and said they were fine including the heaters that are part of them. So, he reset everything, drove it for a while over the weekend and the light didn't come on. Started well, purred. Today I heard the clicking noise for a moment and the engine at low rpm sputtered. Check Engine light hasn't come on yet. Question: is all of this only related to the 4 O2 sensors and wire harness connection or could something else be going on? Again all 4 02 sensors are original and vehicle has 175K on it, 4.0L V6. Can all sensors start to go out at the same time? If I have to replace the sensors should I go with the Ford Motocraft ones. Look forward to all advice and if something else could be happening. Mahalo [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Aloha: Check Engine Codes O2...
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