Removing and Testing the Thermostat. If you are still unsure whether the thermostat is stuck, perform the following procedure to get an accurate diagnosis. Disconnect the negative battery cable. Drain some of the coolant (a gallon should be enough) so the fluid won't pour out when you perform the next step.
collapsed hoses cause water flow constriction. with heater on full .-engine running. loosen the bypass pipe for the closed thermostat till only coolant flows no air bubbles. the engine cooling fan spinning fast enough. the water pump in good condition. the interior directional flaps motors or actuators working.20120 posts · Joined 2014. #2 · Jul 28, 2020. Either a blocked matrix, an airlock or the heat distribution flap is not moving. Diagnostic equipment - latest OpCom Advanced 210420b Professional. Meriva = Corsa on steroids . No DPF = no worries. UEC = Underhood Electrical Centre - big fuse box under the bonnet. REC = Rear Electrical Centre
HandyAndy-UK. 986 posts · Joined 2007. #5 · Apr 5, 2009. Two things I'm thinking: 1st is thermostat stuck open . but then I'd also expect to see cooler than normal running. 2nd is HBV failure. Either the HBV istelf has failed or the systems controlling it have failed. Most likely, HBV has failed. Opel Astra Heater. Asked by Zibusiso Sep 17, 2014 at 06:31 AM about the 2001 Opel Astra. Question type: Maintenance & Repair. i have an opel astra 2.0 2001 model, the heater in this car does not work. what might be the problem. or is their a part that i have to replace. I have a 2012 Insignia 2.0 CDTI Sport Tourer with Single Zone Climate Control. This week the blowers have stopped working altogether, I've tried all the speeds as I read threads where the blowers work on level 4 but no others. This is not the case for me, the blowers do not work at all. I've checked the glove-box fuse and all is OK there. Tg6M. 248 253 201 326 323 336 140 348 127