"Slow Down" flashing on the 360

Yes, that's what I was thinking, too. I suppose the cure would depend on what's causing it but I would think anything from fuel management/throttle to sensors to the cats themselves, or (gasp) the headers/pre-cats. Unless there's some obvious/easy thing that people are aware of, this is no doubt a time to visit a good tech.

 

I had been getting the slow down light and a check engine light for a few days. I had worked on my alarm battery last weekend and had turned off the battery. Following some advice, I let the car cool overnight, turned off the battery, then turned it back on and started the car and let it idle for over 10 minutes to allow the computer to relearn. I know that turning off the battery cancelled the CEL but so far the car has run normally for the past 2 days with no slow down light.

 

I had this happen to my 2001 360 spider aswell. Dealer replaced a sensor near the exhaust and it was fixed.

 

I had slow down issue while slow speed or traffic jam.....some times come with cold start.
Drive hard then slow down light gone!!!!

I replaced temp sensor both of side that checked by dealer service mech but still with slow down fault after 2 days later!!!!

01' F360 F1 with caperstio exhaust and 80K KM...OBD code P1454

Any Suggestion of solve this fault???

Thanks

 

System to lean. It happened to me. I found a big leakage at the fuel evaporative hose which connects to the antievaporation system. Also the seals at the float valves were gone. All this can cause that the fuel system can loose some pressure at high rpm's.

Also the slow down light could be related to dirty throttle bodies and a dirty AMF's.

Since you are running aftermarket exhaust I suggest you check for any exhaust leaks.

You can start from there. Good luck and keep us upadate.

 

Thanks bud....I'd repaired the exhaust while I find out leak with on 2 weeks ago.Also complete welding both of unions on manifold....Maybe I should replace new exhaust that made in my country and see what happen with.... pics posted.

Also I'll check all hose and connects that could cause this issue and let you know what's result I got it...

Thanks
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When you check the fuel lines you should also check the antievaporation lines too. Those bastards hoses can leak oil like crazy. I recently replace all the evaporation, second air system, fuel, lubrication and crankcase vapor lines. Once for all!
Keep posting your results.

 

I had a light on mine and I fixed it by tightenning the exhaust connectors specially on the cats. Not seen that light ever since

 

Hi
I have had the "Slow Down" flashing occasionally for some time now. It is usually when the car is warm but still close to the house few miles. Mechanic said it is most probably the CAT sensor. I am planning to take it next week, but could you give us more insight on where this hose might be so i can check it?
Thx

 

Update. My "slow down" light issue was traced to a bad cat sensor ECU, as the cats themselves were not actually overheating but the ECU was telling the engine to shut down a bank of cylinders to stop the cat from frying. A $330 part and a bit of labor for diagnosis and R&R, and all is good. Kudos to Brian Crall for getting it fixed efficiently.

 

Exact same issue justed cropped up on my 04CS, same $330 for replacement part. Dealer recommmended replacement of not only the one which went bad, but the one on the other side too.

 

I thought about that, too, but decided that it could easily be that the other side continues to work for the life of the car, and there was not much leveraging of labor (unlike, for example, changing out a cam tensioner at the time of belt replacement since the covers are open and the belts are removed anyway). It's hard to predict lifetimes for electronic parts, as unlike parts that sustain physical wear, the reason for failure could as easily have to do with a defect at time of manufacturing as it does with repeatedly subjecting it to harsh conditions (like engine heat; or maybe it got wet). I don't think it's necessarily a waste to change the other side, though, and it could save you another service visit.

 

Just had the "slow down" issue on my 01 360 about a month ago....turned out to be the cat ecu also. I replaced both at the advice of my shop, who has replaced "hundreds" of cat ECU's. The old parts were dated 1999 and 2000 respectively, and looked undamaged (none of the heat shrink issues sometimes seen on these things).
Ferrari still used the same cat ECU to replace from what I understand. Go figure.

 

This has to be one of the most annoying and difficult to solve issues. Add me to the list of victims. In my case it would come on 5-10 minutes after start up, under low revs and blink for 10 seconds or so...I could actually "predict" the exact second it would come on...no big deal, I thought, until it cut the power in half one day.

So I had both pyrometers and controllers changed and it has "only" popped up once or twice since (though the power loss thing has not reoccured). Spoke to my shop again today who agreed to take another look, but we both agreed this is a real pain.

What is strange is there are sooo many "fixes' here: reset battery, ECU, exhaust leak, ground wires...

 

My Slow Down light kept coming on and the last time with the CEL so I left it on and took it into my local independent F repair shop which had come highly recommended from other F-chatters. They determined that I had bad spark plugs which because of poor firing on one bank of cylinders caused the car to think that there was overheating (I believe in the cats) and thus triggered the Slow Down light. I had assumed that my mechanic was going to suggest replacing the ECU. While he said that was a possibility, he thought we should start with the plugs first. He replaced all 8 plugs and it has run well with no SDL or CEL in the last 2 weeks since the work was done.

 

Gotta love Ferrari for having a light that actually says "Slow Down." When I tell my friends about the problem they are astonished that Ferrari tries to modify driver behavior.

DrDoug, new plugs are always a treat. I'm sure the car feels much stronger now. Much better to pay for a consumable that would eventually need replacing anyway than for a part that in another universe, shouldn't fail.

 

I wanted to give everyone some feedback on the "slow down" light flashing on my 360. I decided to take it into the shop to be safe eventhough I was fairly confident it was probably just a bad sensor. It turns out, the problem was not at all what I thought. According to the technician, the oil was overfilled (by something between 1 and 2 quarts) and, as the pressure built in the system, some of the overfill was being forced into the engine and out the exhaust. That resulted in oil on the exhaust sensor which tricked the computer into thinking the engine needed to run leaner......thus, the increased exhaust temperature. The slow down light was was only coming on occasionally before this fix and I've only driven it once since the oil level was reduced but so far so good. The technician indicated that overfilled oil is a more common occurance than most think as, to really get a good measurement, the oil needs to be as hot as you can get it. In his own words, "when the filler cap is soo hot that you can't touch it with bare hands........you're almost there".

Not sure if this would apply to anyone else but I wanted to share my experience.

 

Thanks a lot for sharing your experience!
It will be great intel for my troublehooting list.

 

I fixed mine just by tightening the joint between manifold and cat on both sides. never seen it again

 

Took the 360 F1 Spider in for annual oil change. Filled up with gas before arriving at the dealership.

Res Slow Down light started flashing. Slowed down but the light kept flashing.

Dealer said they could not start the car. Had to order a sensor for one of the engine banks. Car runs fine.

Better get this checked out. Could be major.

 

Having the same problem with my '04 360 spider F1. Have had it for over a year now. Had one of the ECU changed (I already had the standard green one's) still no good. I'm trying to locate the ground for the ECU's I know they are somewhere at the back lights. I saw a schematic online but I can't seem to find back...

 

Take the rear stone guards out from the wheel arches (the small ones that slip into the rear bumper) and you will see an earth point on the chassis. Sometimes the riv-nuts in the chassis become loose or corrode, though mostly it's just the cat ECU's that cause the problem. If you check the outputs of the cat ecu's with an SD2 you can usually spot badly failed units a mile off. If it's flashing from cold it's 99% always the cat ecu as it isn't even supposed to flag anything until the cat has reached 250'c or above. If there is a huge difference in cat temps after 250'c and all the adaptive values are right then again, it's likely a cat ecu.

 

Had this problem. Buy ECU that connects to cat senser.You have two one for each side. Inside to one side if message goes away your good if not switch to other side. Make sure on new ECU you silcone edge between green top and black body. Moisture gets in that causes slow down light to appear

 

this morning i take my 360,just after 5minutes driving the slow down flashing i start to put full throttle and the flashing gone,this happening only when i drive slowly,i have tubystile and when i have my original exhaust never happend,my technician tell me we have to change the (lambda sonde) is problem continue we have to check the centraline,or maybe is a electric problem.but i not understand why only when i drive slowly?
ps:sorry for my english

 

Ok recent owner here and I'm learning. I purchased a '05 360 with 28k miles. Last week I had an annual because I didn't know when or if the owner had it done. The car was PPI'd before purchase and when I drove it everything seemed ok. After I had the Annual the tech said everything looked good. I drove it home on the expressway and all was ok. Its been sitting in the garage for about a week and I started it yesterday only to shut it off because something came up. I started it this morning let it warm up put the top down and I'm in heaven. I drove about a mile and all of a sudden the red "slow down" light came on. I never got it past 50. Took off and it went away. Then it came back but seemed a little sluggish. My problem is I only work 4 miles from my house and I don't think it ever warms up. So, should I be concerned about this light?