4 replies to this topic

[colinspeight]

Good morning all  Bit of a long post. but here we go

Rover Mini Cooper 1.3 MPI

R284 CGT Flame red White roof with factory Webasto.

MoT pass at 25/07/2024 at 57,861 no advisories, current reading 57,867. 

 

Taxed insured good to go. Only issue I can't fathom is overheating. New rad, new fan, temp sensor, all hoses new. Left at idle it boils up, fan not coming on. Have renewed relay to bulkhead. If I connect fan to a slave battery it works. 

 

Help!!!

 

Major resto history over 8 years

 

OEM parts used extensively. New front wings and front panel, A panels and flitch panels, complete floor to o/side, 2/3^rd floor to n/side, new sills, jacking points and sling plates, complete new heel board, boot floor, rear susp tops, rear valance, closing gussets etc. Professional respray

All seams to new body panels professionally welded in 2023 to MOT standard, paint matched accordingly.

New rear subframe and new trunnion bushes etc. Radius arms refurbished new trumpet cones, new shocks all round.  Undersealed and Waxoyled.

All new door, window and boot rubbers inc windscreen infill strip, window lift mechanisms, rubbers and channels. New gutter strip in black, front, wiper arms etc, rear bumpers and grille all in stainless steel.  Dashboard pro restored. Original carpets. New soundproofing all round.

Coach lines, bonnet stripes and decals as per original fitted.

Complete new brakes all round inc rear wheel cylinders, shoes, springs, braided hoses, h/brake cables, new brake lines.  New front caliper’s, discs and pads, braided hoses, master cylinder overhauled. Track rod ends, wheel bearings and ball joints, CV joints and boots all renewed.

New radiator, hoses, water pump, HT leads, thermostat, temp sensor, new exhaust complete inc cat converter. New clutch master cylinder inc braided hose and slave cylinder, fuel and oil filters, new battery.  Fuel tank steam cleaned.

New starter relays, engine management relay unit replaced.  Original ECU unit. Wiper motor, wheel boxes and drive spring cleaned and regreased, new wiper park switch.

4 new Falken 165 12 60 tyres. Original minilites in excellent condition.

Webasto sunroof fabric renewed, watertight. Headlining cleaned. Original carpets and upholstery cleaned.

 

 

 

 

[colinspeight]

Ok started car up yesterday, pulled off temp sensor connector and the fan starts up, reconnect and the fan stays on. Turn engine off and fan stops. Quite a lot of bubbling in the header tank water rose up to the neck then as it cooled went back to halfway.

 

So took car for a 8 mile run to get a paper this morning, got home, no fan came on and on turning the engine off it boiled over through the pressure cap.

 

Only thing I can think of now is to fit a new stat, temp sensor and cable.  Otherwise I'm stuck!! 

 

Any thoughts please?

 

.

[sonscar]

Try a new pressure cap?Steve..

[Quinlan minor]

Sounds like a pressure or a leaking header tank, both not uncommon issues. Pressure test the system and, if buying a new cap, get a BMW (blue seal) cap.

Many of the cheap ones on EBay are not fit for purpose.

 

Edited by Quinlan minor, 10 August 2024 - 03:52 PM.

[colinspeight]

Thank you all, cap is new as is the header.  new stat, temp sensor and cable on order from mini spares york.  Took everything apart this affy in readiness and took oil filler cap off slight emulsification going on. EEEK

Strongly suspect now it could be head gasket maybe or worse, got a compression tester coming however will fit new parts and lsee how things progress.