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Cobra Forums
The Terminator
Engine/Tuning
Need help diagnosing 2 problems...
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<blockquote data-quote="Cobra-21" data-source="post: 10754620" data-attributes="member: 26365"><p>OK, got 2 problems that came up about the same time. (2004 Cobra, 47K miles, mods in sig).</p><p>1) A/C, vent, etc. blower only works in the High speed position, not in any of the lower fan speeds. A/C cools fine, just can't adjust the fan speed to anything less than High. Is there a fan switch/module that would be the culprit? How hard to repair myself?</p><p>2) Got a miss at idle. Also noticed the idle seems to hang higher than usual, maybe 900-1000 rpm instead of 750. The Check Engine Light is not lit. New TR6ix (.032 gap) installed 3 months ago, never had a problem with these before. Also recharged my air filter same time and changed the fuel filter. Ran great until this weekend. No changes at all since those maintenance items were done. Will start with the usual suspects, clean the MAF wire, clean the IAC, then pull and check plugs. Maybe I'll take a look at the TPS reading, but that shouldn't cause a miss...Any other suggestions?</p></blockquote><p></p>
[QUOTE="Cobra-21, post: 10754620, member: 26365"] OK, got 2 problems that came up about the same time. (2004 Cobra, 47K miles, mods in sig). 1) A/C, vent, etc. blower only works in the High speed position, not in any of the lower fan speeds. A/C cools fine, just can't adjust the fan speed to anything less than High. Is there a fan switch/module that would be the culprit? How hard to repair myself? 2) Got a miss at idle. Also noticed the idle seems to hang higher than usual, maybe 900-1000 rpm instead of 750. The Check Engine Light is not lit. New TR6ix (.032 gap) installed 3 months ago, never had a problem with these before. Also recharged my air filter same time and changed the fuel filter. Ran great until this weekend. No changes at all since those maintenance items were done. Will start with the usual suspects, clean the MAF wire, clean the IAC, then pull and check plugs. Maybe I'll take a look at the TPS reading, but that shouldn't cause a miss...Any other suggestions? [/QUOTE]
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