Since I got my Mondi, temperature always was an issue. Today was D-day, I'm fed up with the temperature ruining my rides. Sometimes, it creeps up to 105°C ( than I cut of the engine and let her cool down), and sometimes she keeps her temp like a charm. Checked, doublechecked, triplechecked everything: thermostat works (and is new), waterpump (new), fan kicks always in at 90 degrees. I changed most of the hoses already. Today, I went for the big mess: dropping all coolant and removal of the radiator. And yes it's a mess. Coolant all over the place. Yeah! But, I found the root of my cooling problem: radiator has many blocked passages. Now I need to find the cause: some coolant hoses seem to desintegrate and clogg the radiator. Next thing to do: Radiator to specialised shop: cleaning, testing and a new coat of paint. Because the rad seems in good order (other than clogged up), should I keep her that way, or recore it? Cleaning the system. That's good fun and much bigger mess. Changing all the hoses I didn't change yet. Curious what to find. allready found out that the hoses to the heater are pretty old and brittle. But brittle enough to desintegrate? We'll see. I'll keep you posted. I you look very hard, you can see the blocked passages: Image Unavailable, Please Login
Bart, I had my 85 QV radiator recored this summer and a second fan added. It has made a huge difference. The problem is, even though flushed, there can be micro holes that cause problems. Especially if yours is original, it is likely that it needs recoring. Now, the needle rarely budges above the 170 mark even with autoroute speed in summer heat with AC going. Oh, also, added all the foam insulation around the sides of the radiator too. Taken together, overheating is no longer a worry for me.
Good ideas all. Here's one that is a very long shot, but if the electric cooling fan is wired incorrectly, it will push hot air back into the radiator instead of pulling it out. Should be extremely easy to check. Good luck.
Hi, I'm glad you found out what was wrong w/ it. One reminder when it's time to fill up w/ coolant it's important that you will bleed the system to prevent air & bubbles in your cooling system w/c can cause overheating . audio research
ajaj that looks... well clogged! At least you found it now! When clogged like this one a citron acid solution preferable at cooking temp should do some good for the bigger pieces. (do it outside ) leave it for 10min. Do clean it very good with water afterwards! Let a hose with warm water clean it from the acid for 10min. Hook it up to the car again, take out the thermostat put in a cheap coolant or distilled water, some heavy coolant flush and run it for 15 to 20 min. Drain it and I would repeat it a second time, but that's me Not sure how the interior heating radiator is? did it work, meaning hot air blowing.
Thanks for all the suggestions. The correct working of the fan was also checked in my line of troubleshooting. I think in terms of flushing: bringing the car to my workshop at work. There are firehydrants, if I connect the downpipe with a firehose, reduce the pressure to a 1.5 bar and let is flush for a time: most of the debris must be out. I'll do this with radiator disconnected: so both long hoses in the middle of the car are open: 1 is connected with fire hose, other stays open for flushing. In terms of prevention, I also was thinking of a total recore with attention for extra cooling capacities. The new generation Spal fans should enhance cooling + an extra fan with separate switch when extra cooling is needed.
Yep MvT Heater works fine. The rad shop that does all radiator jobs for my workshop will tackle this one. Firstly they'll measure flow before they open it up.
To be honest Bart I'djust recore it. Reason why is its old and you will need to flush it 3 - 4 times out of the car to clear it as rad cleaning products are no good here. Emily had a cooling problem on the X19 when she first got it, she used rad cleaning stuff 3 times with poor results. She then took the rad out and I poured scolding water through it with a product. The amount of junk that came out was amazing but it just seemed the more we flushed it the more would dislodge in the core and block it once again. Emily had the rad out 3 times before giving up and going for a recore which fixed things instantly. Why didn't she do it sooner? Well she just wanted the car to be totally original. In the end I did manage to persuade her that a rad was just a wear item and so could be replaced.....aw she so cute ha ha. Anyway good luck, regards Bell
Just called the radiator guy. When they tried to measure flow, the seam on the top side split open. Flow was restricted by rubber particles and sediment. They will recore it.
Guido Where: EVKO, Houthalen Result: hopefully like new How much: no clue yet Pics & pricetag when it's back next week.
Had the same problems but a local radiator shop boiled it out, didn't need to rod the cores or recore the unit. My lesson was despite the coolant appearing nice in the expansion tank, there was gross rust and crap in the coolant when I drained and flushed it. So flush your systems gentlemen: they need it.
He's back, and better than ever Today I got the radiator back. They recored it with a copper core, as per Original. Price was 540 ex tax, a bit on the high side but there is Ferrari stamped on the top housing, so the F-tax was not forgotten I guess.... If weather is good this weekend: I will flush the system, change some hoses, install radiator and fill her up with fresh coolant.
Holy crap Bart! Dat is niet misselijk! To translate: that is a lot of money for a recore. I would expect that the damn thing would be silver plated as well then . I am considering mine as 1/3 of the cooling blades are at a point where they start to fall out. I think I'll give it up side down and ask for an immediate price. The positive thing is that I know the guy as he did our radiators the last 20 years. Anyway good that it has been repaired. I almost don't dare to ask.. but any pics?
Bloody Hell! 540e is way high , I paid 100e for my Lamborghini rad recore. oh well at least its done.
Finaly found the time to make further progress. The center coolant hoses, which seemed renewed, were the the cause of blockage in the radiator. The lower hose looks like a renewedversion. The mechanic who did this job, greased up the hose which made it very sticky and a pain to remove. The upper hose removed like a breeze. Now finaly the biology lessons of dissection are paying of, after 30 years. Then frogs, now snakes (or hoses if you will) But first: group photo: Image Unavailable, Please Login
Hi guys, I cut open both hoses. The renewed lower hose was like new. The old hose, well, wasn't so. :-( I made a small video because a picture doesn't do justice on the magnitude of the problem. https://youtu.be/HZ8ZaFe9yk0 I'm glad I found the root of the intermittant heating problem I had. So, if your hoses have an unknown history, better dig in before you can recore the radiator. The rubber parts are not removable from the little canals in the rad. I pulled out the hoses from the front with a vise grip. The new hose has a slightly smaller outer diameter, so I hope getting them in will be not a drama. Image Unavailable, Please Login
holy crap! I think that this is the worst I have seen so far! Now I am thinking of the heater radiator Perhaps close this off for the time being, but then this coolant hose is before the front radiator.. Like you said one should start thinking about replacing these when a car reaches 25 years.
Entering the central hoses works fine if you grease up 10cm with vaseline. I left the first 10 cm untouched and the next 10 I greased. So, the greasy part stays in the tunnel and you have a clean dry hose for putting your clamps on. They slid in like nothing. The first time I tried to do it, I did it with dry hoses. That didn't work. Now cleaning up the front compartiment a bit and searching for some foam to stick between radiator and frame.
Acid free vaseline is perfect for greasing up doorrubbers (in winter time). So why not for a better resistant coolant hose?
Today, I made a little progress in remounting the rad, bumper, grill, headlight pods. Cleaned up everything. Found 2 unconnected wires (pink/black), they could be changed for the white/light blue wire from the fog lights. I have no wiring diagram for the QV and because the ferraridatabase.com website is down, I'm out of options. Someone has got a euro-QV version? Thanks
Where have you guys got the foam that's around the radiator? I checked all different home depot/DIY shops for something, but found nothing suitable.
