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| 1988 fiero formula idling at 2k rpm and rad fan stuck on (Page 2/3) |
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cartercarbaficionado
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APR 23, 05:51 PM
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| quote | Originally posted by Vintage-Nut:
If I was you, purchase a printed factory service manual to troubleshoot your Fiero issues.
PDF Copies of GM, Haynes and Chilton's
https://fieroinfo.com/manuals/
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I will get that manual, also I've already replaced and fixed all the vac lines 4 times now including removing the stuff for the charcoal canister (properly mind you. not my first 80s gm its my 5th)because it apparantly caught on fire for the previous owner, the temp sensor for the ecu might be the issue but I'm not sure
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Patrick
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APR 23, 06:05 PM
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| quote | Originally posted by cartercarbaficionado:
I'm only overheating at speed since my rad fan is spinning slower than the air is coming in...
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That's a new one! (The only way there'd be some merit to what you're saying is if the fan was spinning in the opposite direction.)
Look, you can believe us when we tell you the always on fan isn't causing the "overheating"... or not believe us. That's entirely your choice.
| quote | Originally posted by cartercarbaficionado:
(gt bumper on a formula also doesn't help my case considering the missing lower dam)
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Get an air dam on there![This message has been edited by Patrick (edited 04-23-2024).]
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1985 Fiero GT
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APR 23, 09:11 PM
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Think about it, the fan blades are always in the airflow the same amount, even when spinning, if anything, it is still improving cooling at speed because instead of just a chunk of plastic in the Airstream, it is turning and going with the Airstream, I definitely think the air dam is the issue, the radiator gets most of its air from that, very little from the openings, especially with a license plate. Considering air will take the easiest path, at speed your air is likely going in the opening, then straight under the radiator, skipping it entirely, instead of getting forced into the radiator along with a bunch of lower air by that air dam.
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Vintage-Nut
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APR 23, 09:18 PM
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| quote | cartercarbaficionado
...but no one wants to actually tell me which switch on the ac compressor is the one to control the fan.... |
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You know that Two Switches Control the Coolant Fan Relay, not only one - right?
Coolant A/C Pressure Switch @ the compressor OR Coolant Fan Switch @ the engine block
One or the Either will Start the Relay
BTW:
AC Compressor Switches by RWDPLZ
https://www.fiero.nl/forum/Forum2/HTML/117640.html[This message has been edited by Vintage-Nut (edited 04-23-2024).]
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cartercarbaficionado
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APR 23, 09:33 PM
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| quote | Originally posted by Vintage-Nut:
You know that Two Switches Control the Coolant Fan Relay, not only one - right?
Coolant A/C Pressure Switch @ the compressor OR Coolant Fan Switch @ the engine block
One or the Either will Start the Relay
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I had figured, the 84 fiero in the garage and the 1993 and 1988 s10 blazer do the same thing, just wasn't sure which Switch and I needed to be completely sure which one it was since it's expensive and if I open the ac system (empty already) then I might as well convert to r134a while I'm in there
now if only I could find the water outlet for the 84
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cartercarbaficionado
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APR 23, 09:36 PM
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| quote | Originally posted by Patrick:
Get an air dam on there!
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I would if there was any near me or if it wasnt 250 bucks plus shipping, not gonna throw parts on until it's dumb engine works or I give up and carb it (~1000 bucks) just because I've already replaced all but 2 sensors which made the wandering idle go away but who knows how terrible the last 2 are (one is the 02 sensor that is stripped into a circle so it's gonna wait until I decide to "upgrade" the exhaust)
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Patrick
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APR 23, 09:39 PM
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| quote | Originally posted by cartercarbaficionado:
now if only I could find the water outlet for the 84
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And this has exactly what to do with the following... "1988 fiero formula idling at 2k rpm and rad fan stuck on" ???
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cartercarbaficionado
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APR 23, 09:39 PM
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| quote | Originally posted by 1985 Fiero GT:
Think about it, the fan blades are always in the airflow the same amount, even when spinning, if anything, it is still improving cooling at speed because instead of just a chunk of plastic in the Airstream, it is turning and going with the Airstream, I definitely think the air dam is the issue, the radiator gets most of its air from that, very little from the openings, especially with a license plate. Considering air will take the easiest path, at speed your air is likely going in the opening, then straight under the radiator, skipping it entirely, instead of getting forced into the radiator along with a bunch of lower air by that air dam. |
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my 68 ford had an overheating issue which was hard to track down until I took the hardwired electric fans off and put them on temp sensors, it was dumb but the fan could not spin fast enough to actually keep up with it at speed, same thing on a 2002 gtp and a 1995 gtp and weirdly enough a geo storm gsi
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cartercarbaficionado
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APR 24, 12:11 AM
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| quote | Originally posted by Patrick:
And this has exactly what to do with the following... "1988 fiero formula idling at 2k rpm and rad fan stuck on" ??? |
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because then I would know if the computer was the issue on the 88 since its using a 88 computer from the same previous owner and infact the old one from this formula when it was doing the same thing and after the new computer it stopped
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Patrick
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APR 24, 01:49 AM
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???
Sorry, I need to bow out of this thread. I don't know if it's you or me... but I'm not able to be of any help to you.
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