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Discussion Starter · #1 ·
Hi everyone - so happy to find this forum. I just purchased a '22 Pan America Special about two weeks ago to add to my '78 Shovelhead and '15 Road Glide.

Loving the bike so far, but noticed an overheating issue yesterday. Temperatures in the Dallas, Texas area were in the upper 90's, and while moving, coolant temp would fluctuate somewhere around the 200-220 mark as expected. When stuck/stopped in traffic, however, I noticed my coolant temp would rise quickly - VERY quickly. At 235 degrees F, the bike starts to idle very rough and even stalled a few times as the temp even went higher, I believe it hit almost 250F before I got moving again. I checked my coolant level, and it was indeed low (wasn't even registering on the dip stick). So I added about 12oz of coolant and topped off the expansion tank. But riding the bike afterwards, it started doing the same thing - quickly rising to 235F when stopped at red lights, etc., and idling very roughly - I even have to move the throttle slightly to keep it running at 235F+. NOT GOOD WITH A LIQUID COOLED BIKE!! The cooling fan is operating, and the bike is super clean so no radiator obstructions.

Does anyone know of any issues with Pan Am's overheating? I presume it's got a thermostat in it - perhaps this needs to be changed out?

Thanks so much!
 

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Hi everyone - so happy to find this forum. I just purchased a '22 Pan America Special about two weeks ago to add to my '78 Shovelhead and '15 Road Glide.

Loving the bike so far, but noticed an overheating issue yesterday. Temperatures in the Dallas, Texas area were in the upper 90's, and while moving, coolant temp would fluctuate somewhere around the 200-220 mark as expected. When stuck/stopped in traffic, however, I noticed my coolant temp would rise quickly - VERY quickly. At 235 degrees F, the bike starts to idle very rough and even stalled a few times as the temp even went higher, I believe it hit almost 250F before I got moving again. I checked my coolant level, and it was indeed low (wasn't even registering on the dip stick). So I added about 12oz of coolant and topped off the expansion tank. But riding the bike afterwards, it started doing the same thing - quickly rising to 235F when stopped at red lights, etc., and idling very roughly - I even have to move the throttle slightly to keep it running at 235F+. NOT GOOD WITH A LIQUID COOLED BIKE!! The cooling fan is operating, and the bike is super clean so no radiator obstructions.

Does anyone know of any issues with Pan Am's overheating? I presume it's got a thermostat in it - perhaps this needs to be changed out?

Thanks so much!
I think the rough running is the bike turning off fuel/ spark to rear cylinder.
That cylinder acts like a air pump to help with cooling.
Basically bike is running on one cylinder.
 

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Discussion Starter · #4 ·
I would get the bike back to the dealer. I live in south Florida and I never had an over heating issue with my 21 and it gets hot during the summer here.
Thanks - I definitely need to, it’s doing it tonight at 85 degrees F when stuck in traffic! Scheduled for her 1000 mile service next Friday so that’s going to be a top priority. I m concerned that dealers don’t have much experience with Pan Am’s.
 

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I think the rough running is the bike turning off fuel/ spark to rear cylinder.
That cylinder acts like a air pump to help with cooling.
Basically bike is running on one cylinder.
Yes thanks and for sure - my 103 shuts down the rear cylinder spark at high temp and I’m sure the Pan Am is protecting itself the same way - BUT shouldn’t be getting this hot.
 

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Hi everyone - so happy to find this forum. I just purchased a '22 Pan America Special about two weeks ago to add to my '78 Shovelhead and '15 Road Glide.

Loving the bike so far, but noticed an overheating issue yesterday. Temperatures in the Dallas, Texas area were in the upper 90's, and while moving, coolant temp would fluctuate somewhere around the 200-220 mark as expected. When stuck/stopped in traffic, however, I noticed my coolant temp would rise quickly - VERY quickly. At 235 degrees F, the bike starts to idle very rough and even stalled a few times as the temp even went higher, I believe it hit almost 250F before I got moving again. I checked my coolant level, and it was indeed low (wasn't even registering on the dip stick). So I added about 12oz of coolant and topped off the expansion tank. But riding the bike afterwards, it started doing the same thing - quickly rising to 235F when stopped at red lights, etc., and idling very roughly - I even have to move the throttle slightly to keep it running at 235F+. NOT GOOD WITH A LIQUID COOLED BIKE!! The cooling fan is operating, and the bike is super clean so no radiator obstructions.

Does anyone know of any issues with Pan Am's overheating? I presume it's got a thermostat in it - perhaps this needs to be changed out?

Thanks so much!

The bike (along with MANY other HDs) has what's called EITMS
Here's HD explanation: https://serviceinfo.harley-davidson...742349482302730/BLAISE/1052715/en_US?nid=5671

When certain criteria are met (ie your temps getting that high) it shuts off fuel to the rear cylinder.

You can turn this off but it's quite a safety device. When sitting still, rolled the throttle forward till it bottoms out and hold... Cruise light will flash ORANGE for off and GREEN for on
 

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I know the air cooled HDs have EITMS, and I know that you get the same light on the PA when you go to throttle roll-off, but liquid-cooling should eliminate the need.

I've never seen the enable/disable EITMS feature mentioned in PA documentation, or any mention of Rev Max having this feature except in forums. Anybody have PA specific documentation re: presence of EITMS?
 

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I live in an extremely high temps country, waiting for the real summer to come and see how the engine will react. So far, the normal working engine temp is 86 C. (187 F.), when stopping at the traffic lights goes up to 105 C. (220 F.) but now the average ambient temp is around 25 C. (77 F.) waiting for the 40 C. (104 F.) to come and see.

My biggest concerns are about the radiator hose being so close to the exhaust pipe :-( Harley should find a solution for that and recall the bikes to replace the pipes!
 
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