It wont hurt, unless your thermostat gets plugged up.

 

Thanks Savannah, just replaced the t-stat about three weeks ago so it better not be plugged up already! Should have done the flush and clean when that was replaced...

 

I think that radiator flush will not only flush the radiator but will probably make the flow of coolant in the whole system better. Radiator is not the only place that can plug up.
I am also seing higher temps recenty mostly still bellow 103 when driving, but idling it went up to 121. I must say that I never let the car idle for too long in the past but recently with my newborn in the car and hot weather outside, I had to run the engine and AC. What I noted that the AC was raising the RPM by around 150 and that when I turned off the AC, the temps went down to 112-115 range.
I am wondering fro how long you could leave the radiator flush in without causing any damage? I am also planning on changing my thermostat to the soft spring one.

 

I'd like to see what your results are with a radiator flush too.

The wife reported temp gauge coming up right below the red...coolant flush and system burp was on the agenda for the weekend, but I may have to push that up now.

 

IMHO you extra hot will be more than just a flush. Need to park it until it can be worked on to prevent possible larger problems. Check viscous fan clutch.

 

Ditto what Savanna said, do not drive it until you look at it. That gauge in the dash is an idiot light gauge, if it is reading that high you engine is running at around 230ish F. If you keep running it like that your best case scenario is having to replace the head gasket.

 

using an Ultrgauge as well my temps were 194-197 on the highway and then 203-220 city driving or at a stop. Put in a new thermostat, new water pump, flushed radiator and switched from Dexcool to green stuff: temps did not really budge. Clutch fan did not seem too bad but I had planned on doing it anyway except AB sent one for a D1 and not a D2, so I did not want to use it as the original one was good enough for the time being.

Finally put in the new clutch fan 5 months later and the temps dropped right down, now running the same on the highway, but 197-208 in the city.

I have also noticed that the hotter it is outside, the cooler the temp readings are, that is, when it is 90° F outside it tends to stay down to the lower end of the range in city driving and when it is 70° F or less it tends to hover in the higher end of the city driving range. Maybe that has to do with the clutch fan liquid and how it works?????

 

My intake connection started to rot like your, and being cheap, i wrapped it with duct tape, a year or so ago and it has been fine ever since.
The engine will run slightly better with this not leaking bit not by alot.

 

are these temps about the same range you want in a D1 as well? I have been freaking out recently when my truck gets to 100 celsius in stop and go traffic around atlanta, but from what I am reading in this post that is not really outside the normal range? Of course I have reached this temp with no a/c so maybe I do need to consider getting my radiator serviced?

 

Thanks Mike. I was having the same idea, but wasn't sure how the duck tape would hold up. Thanks for letting me know. I will get some duck tape on that and get some nuts to re-attach the intake to the body.

I also have noticed when it is colder outside, the engine runs hotter than when it is warmer outside. When I come to work in the AM it is about 60F and when I am in stop and go traffic it usually sits at about 205-208. When I pull into the parking lot and sit there for a minute it raises to 212, but never goes above that. Then later in the day when it is warmer, engine temps in stop and go seem to be 203-206 and never go above 208 when sitting for an extended period of time. Interesting