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The BMW Range
3 Series
E36
e36 328 ownership experience
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<blockquote data-quote="Lee36328" data-source="post: 696519" data-attributes="member: 113"><p>Bro engineburner, by the way, I do hope your nickname is not based on your real life experience.... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p><p></p><p>Let me take a crack at it based on my humble limited experience.</p><p></p><p>We know two things:</p><p>1. it happens after a long drive, returning from PD, but not during short commute, sending kids to school, etc.</p><p>2. it stalled at the toll booth and at the traffic light</p><p></p><p>So, looks like it stalls after a long drive, when the car is idling.</p><p></p><p>Something is interfering with the car's ability to idle correctly, and the condition comes up only after a long drive. Long drive means heat. Heat causes things to expand. It also causes electric resistance to increase.</p><p></p><p>If there is a leak somewhere in your air intake system to the idle control valve, it may cause idle to be rough. If the leak is from a small crack, it affects the car only if the crack is expanded by heat. This is the most likely scenario and should be quite straight forward to detect and fix at your workshop.</p><p></p><p>Alternatively, check also the circuit from the throttle position sensor to the ecu, including the fuse. If there is a defect causing a resistance, which increases with heat, that could be the cause.</p><p></p><p>There is one more possibility, in the way the throttle position sensor sits in the throttle body and detects the movement of the throttle through a physical mechanism, but that is physical and less likely to be affected by heat.</p><p></p><p>I have to repeat, I'm no expert, best get the car checked at your workshop. Based on my humble experience, the above is from the top of my mind. I would guess the most likely is a small leak somewhere</p><p></p><p>Would love to hear ideas from my fellow e36 enthusiasts.</p></blockquote><p></p>
[QUOTE="Lee36328, post: 696519, member: 113"] Bro engineburner, by the way, I do hope your nickname is not based on your real life experience.... :eek: Let me take a crack at it based on my humble limited experience. We know two things: 1. it happens after a long drive, returning from PD, but not during short commute, sending kids to school, etc. 2. it stalled at the toll booth and at the traffic light So, looks like it stalls after a long drive, when the car is idling. Something is interfering with the car's ability to idle correctly, and the condition comes up only after a long drive. Long drive means heat. Heat causes things to expand. It also causes electric resistance to increase. If there is a leak somewhere in your air intake system to the idle control valve, it may cause idle to be rough. If the leak is from a small crack, it affects the car only if the crack is expanded by heat. This is the most likely scenario and should be quite straight forward to detect and fix at your workshop. Alternatively, check also the circuit from the throttle position sensor to the ecu, including the fuse. If there is a defect causing a resistance, which increases with heat, that could be the cause. There is one more possibility, in the way the throttle position sensor sits in the throttle body and detects the movement of the throttle through a physical mechanism, but that is physical and less likely to be affected by heat. I have to repeat, I'm no expert, best get the car checked at your workshop. Based on my humble experience, the above is from the top of my mind. I would guess the most likely is a small leak somewhere Would love to hear ideas from my fellow e36 enthusiasts. [/QUOTE]
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