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The Water Cooler
General Discussion
I love being the 5th Owner of My Car
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<blockquote data-quote="travisstorma" data-source="post: 2728184" data-attributes="member: 24683"><p>The coolant temp sensor looks a bit suspicious to me. Notice how it drops 50 degrees at the same time everything else starts happening, then it goes right back up with no ramping.</p><p>The coolant temp is used to modify all kinds of tables in the ECM for fueling and spark timing.</p><p></p><p>ETA: Or I'd be looking for a power, ground or other electrical issue causing loss of reference voltage from the ECM.</p></blockquote><p></p>
[QUOTE="travisstorma, post: 2728184, member: 24683"] The coolant temp sensor looks a bit suspicious to me. Notice how it drops 50 degrees at the same time everything else starts happening, then it goes right back up with no ramping. The coolant temp is used to modify all kinds of tables in the ECM for fueling and spark timing. ETA: Or I'd be looking for a power, ground or other electrical issue causing loss of reference voltage from the ECM. [/QUOTE]
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I love being the 5th Owner of My Car
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