17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine Compartment Fan
Leading reported evidence
Replace stock spoiler
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Performed · outcome unconfirmed
I don't think mine has come on in the garage since I replaced my stock spoiler with the Taco spoiler.
Leading evidence: 'Replace stock spoiler' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace stock spoiler' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
You can test the sensor with a heat gun, infrared thermometer (and I use a heat shield).
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Suggestion · Original poster
ETA: Murphy, I have had the fan run after shutoff in the garage after some spirited driving on my old one but I have a pretty good stretch of cool down time driving into my neighborhood here in FL.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
However, I believe it overrides the temp sensor by telling the ECU to run the fan relay on.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
ETA: Murphy, I have had the fan run after shutoff in the garage after some spirited driving on my old one but I have a pretty good stretch of cool down time driving into my neighborhood here in FL.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I�ve been driving my �04 C4S around Florida for the past few days and, even after a fairly spirited drive, the cooling fan doesn�t come on at stoplights or when I pull into the garage and shut it down.
The temp has been in the �70�s. My 04 Carrera�s fan would come on frequently in the summer in Indiana. But the temps were probably 10 degrees higher.
Problem or not?
TC
Since I have the car (also in Florida) I only got the engine bay fan running once, and it was just for few seconds after arriving to the garage. Even driving in the summer with the high temps here in Broward.
Maybe it is because I have never made too much city and the car gets good refrigeration.
I think that there is a one warning light in case the engine bay fan doesnt work
I don't think ambient air temp of 70 will cause the fan to kick on. Once temps get into the 90's and if you don't have the fan going, I'd check it out.
Ok. Thanks guys. I was thinking it might not have been warm enough down here.
My other one would kick on in the summer after coming off the interstate—not even flogging it. Wondering if that car was triggered at too low a temp. Oil temp is fine on the current car.
Thanks again!
TC
The engine compartment purge fan rarely comes on.
From the service manual...
"Switch-on conditions for engine compartment fan (this fan pulls air into the engine compartment) The engine compartment fan is switched on when the engine compartment temperature is > 176 degrees F or the coolant temperature is > 216 degrees F.
After-running of engine compartment fan
If the ignition is switched off and the engine compartment temperature is more than 140 degrees F, the
DME
control module remains in readiness for another 20 minutes. During this time, the engine compartment temperature is retrieved every 10 seconds. If the engine compartment temperature is > 185 degrees F , the engine compartment fan is switched on for 20 seconds. If the engine compartment temperature is still > 185 degrees F after this time, the fan remains on for a further 30 seconds."
Ok, of course this happened AFTER I started this.
After crawling through the near gridlock of snowbirds in downtown Naples, I pull in to park at a restaurant and, ta dah!—I hear the fan running. It was just that much idling after running at 60 mph downtown to trigger the fan.
Thanks all—good input as always.
Temps crept up to the left side of the 8 in 180 but no higher.
TC
ETA: Murphy, I have had the fan run after shutoff in the garage after some spirited driving on my old one but I have a pretty good stretch of cool down time driving into my neighborhood here in FL. Great info—more numbers for me to geek on!
I know! My buddy who warned me about the in-season traffic was utterly unsympathetic to my plight last night.
Hopefully heading to Marco this afternoon to watch the Colts/KC game (IF AA scheduling leaves me alone!).
TC
Here in the NW my fan rarely ever comes on which I mentioned to my mechanic, he plugged his computer in and remotely turned on the fan stating "it's working just fine, our temps here never get that hot and you obviously haven't spanked it hard enough to get the fan to turn on" though it does occasionally come on in the garage in the summer after a drive.
I've owned my car for 3 years and the engine compartment fan has NEVER come on. I can activate it by Durametric, so I know it works, but I guess it never feels the need, even when tracking it on a hot day, or stuck in stop-and-go traffic on a hot day.
This is a source reference. Confirm exact model applicability in the original material.
