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 Posted: Sun Jan 06, 2013 12:51 am |
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Joined: Jan 06, 2013
Posts: 8
Trade Rating: 0
Location: Lancaster, Lancashire
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My 206 overheats on motorways and main roads, when keeping to 60 or more, but I can let off down hills and the temp just seems to drop to normal running temp within 1/4 mile but when I get back up to speed it over heats again within a mile. Unsure of what this is that it could be.
Also I am unable to get engine to rev between idle and 1700 rpm under no load.
It's ecu is mp7.2 with air con that doesn't work. I've had it plugged up and everything looks ok
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Posted: Sun Jan 06, 2013 2:14 am |
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Joined: Feb 10, 2010
Posts: 4266
Trade Rating: +4
Location: Palestine
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start by replacing the thermostat and coolant as a start,because you may have a faulty one,be carefull of high temp. it damage the head gasket
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Posted: Sun Jan 06, 2013 3:15 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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On a V plate the radiator could be past its best. They do corrode which removes all the fins from them. With it sat behind the air con radiator it makes it harder to see.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Sun Jan 06, 2013 7:59 am |
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Joined: Jul 20, 2012
Posts: 234
Trade Rating: 0
Location: Gainsborough
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check all pipes, coolant level and as edward says have a look at the rad as its most probably shot. you may aswell replace coolant anyway
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Posted: Sun Jan 06, 2013 9:00 am |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Does it overheat in stop / start town driving.
Motorway driving at speeds puts strain on the lubrication system not normally the coolant system.
Stop / start town driving strains the water cooling system.
If it is over heating on the motorway but not in stop / start town driving that is a little odd.
Do as the others have said checking the cooling system for leaks, check the radiator for condition, check the coolant level but also make sure there isn't any oily scum in the water header tank. Check the oil level and make sure there isn't any white mayonnaise in the oil filler cap.
I would be suspicious of head gasket starting to fail or an air lock.
Possibly also the ECU sending spurious signals to the engine management system and running excessively lean or over advancing the ignition but these are unlikely. If the first tests and checks don't solve it and it isn't overheating in town driving but is over heating at speed come back here and post again.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Sun Jan 06, 2013 9:05 am |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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No ones asked the obvious yet.
What temperature are you getting when it starts to overheat?
Is the fan kicking in when it starts to overheat?
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Posted: Sun Jan 06, 2013 9:23 am |
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Joined: Apr 19, 2012
Posts: 529
Trade Rating: 0
Location: darlington
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Have u done the mesh grill upgrade on the front bumper lately???and is your air filter and housing/piping clear???when did u change air filter and mesh grill if u did???
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Posted: Sun Jan 06, 2013 10:10 am |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Overheating at speed cause by:-
Blocked airfow. Is the radiator clear externally and is the shroud properly fitted?
Lack of coolant circulation due to:-
a) Sticking thermostat (only partially opening.)
b) Failed water pump (the impellers on some pumps can fail with no external indication.)
c) Collapsing water hose - when they get old they get very soft, collapse and reduce flow (usually the bottom one; not the top one.)
d)Air lock in coolant system.
e) Internals of radiator blocked.(reverse flush the system.)
Low coolant level.
Possibly head gasket - get a "sniff" test done.
There are other reasons as stated previously but check these first.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Last edited by kandlbarrett on Sun Jan 06, 2013 10:29 am; edited 1 time in total
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Posted: Sun Jan 06, 2013 10:24 am |
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Joined: Feb 07, 2010
Posts: 3948
Trade Rating: +7
Location: A Track near you ;)
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| bezford wrote: |
| Have u done the mesh grill upgrade on the front bumper lately???and is your air filter and housing/piping clear???when did u change air filter and mesh grill if u did??? |
What's this got to do with a overheating cooling system 
I had the same model on mine it was the fan wiring that had corroded so it never engaged causing it to overheat, I'd check this and what Edward said
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| Renault Clio III RS - Race Car 
Renault Trafic - Daily & Tow Van
Former Poverty 206 XS 1.6Turbo Owner  | |
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Posted: Sun Jan 06, 2013 10:31 am |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Mattie-RS: The OP has only reported overheating at speed and despite asking hasn't commented about stop / start overheating. A none working fan ought to give trouble at low speed not at high speed. I know cars can do odd things but a fan being the cause of high speed over heating would be one of those odd things.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Sun Jan 06, 2013 1:13 pm |
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Joined: Jan 06, 2013
Posts: 8
Trade Rating: 0
Location: Lancaster, Lancashire
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Well, when driving it runs at 95 to 100 coolant fine, not been using any water or oil and I've been checking before each run I have, the thermostat working as it should and I've had it out and checked and opening fully. It's was serviced when I got the car 3 months ago. Around town it's fine and doesn't overheat unless standing.
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Posted: Sun Jan 06, 2013 1:33 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Gary206Gix: 206 usually run at about 80 on the gauge. Yes lower than most cars but that is where they usually sit.
I would do the following:-
a) check there is nothing obstructing the airflow through the radiator and the cowl is in place directing the air through the radiator. (no cost.)
b) run the engine until the fan cuts in. Does it cut in? (check is no cost.)
b) "sniff test"of the coolant for CO gas. This will indicate if there is a head gasket problem (free, maybe £10)
c) chuck a new thermostat at it; despite knowing you have tested it. It is a cheap replacement. (£10 - 15
d) change bottom hose. (< £10)
e) reverse flush the radiator. (free if you catch and reuse the old coolant.)
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Last edited by kandlbarrett on Sun Jan 06, 2013 1:51 pm; edited 1 time in total
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Posted: Sun Jan 06, 2013 1:39 pm |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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I think the fan cutting in or not is irrelevant. It overheats at high speed. So there's plenty of airflow through the radiator but there is a high load on the engine.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Sun Jan 06, 2013 1:49 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Edward: exactly as stated in my previous post. But worth checking while you are there.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Sun Jan 06, 2013 4:19 pm |
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Joined: Aug 11, 2010
Posts: 56
Trade Rating: 0
Location: fife
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My money's on the thermostat I had a similar problem with my OH's car. The other symptom was it took ages to warm up as the thermostat had jammed partially open, so it would shut enough to allow quick warm up and it wouldn't open enough to cool the engine when under load.
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| 206 1.9D, 210,000 now dead following failed submarine experiment (flood) | |
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