Grey 0 Posted April 17, 2008 Hi everybody Only had about 15% warmth from heater, so yesterday had the heater bypass valve replaced at the recommendation of a garage I use. Now there's NO heat at all, just cold air, and the garage now says it must be a blocked heater matrix! :? Cheers Quote Share this post Link to post Share on other sites
Critical_Mass 10 Posted April 17, 2008 bypass valve? Im sure someone will correct me, but it sounds to me like the garage advised you to bypass the matrix itself, thus no hot air? Quote Share this post Link to post Share on other sites
mattkh 0 Posted April 17, 2008 Now there's NO heat at all, just cold air, and the garage now says it must be a blocked heater matrix! :? Hi When they worked on your car, they could have introduced an air lock. Quote Share this post Link to post Share on other sites
Grey 0 Posted April 18, 2008 bypass valve? Im sure someone will correct me, but it sounds to me like the garage advised you to bypass the matrix itself, thus no hot air? Hi No, the bypass valve was already there.I Quote Share this post Link to post Share on other sites
Grey 0 Posted April 20, 2008 Now there's NO heat at all, just cold air, and the garage now says it must be a blocked heater matrix! :? Hi When they worked on your car, they could have introduced an air lock. I didn't know that was a possibility, thanks. But how would you test for that? Though I've got an awful feeling it might be more than that. Still, I haven't had the classic footwell full of water that indicates the matrix has gone...? Quote Share this post Link to post Share on other sites
mattkh 0 Posted April 20, 2008 Hi Put up a picture, a birds eye view of the more to the right side of the engine. Turn the engine on and as the water warms up massage the water hoses. Quote Share this post Link to post Share on other sites
Supercharged 2 Posted April 20, 2008 The matrix could be leaking internally into the box - any loss or smell of coolant in the cabin?? If the valve detects a leak it will shut, thats what they are there for - I would be tempted to by-pass then for now just for testing... Quote Share this post Link to post Share on other sites
mattkh 0 Posted April 20, 2008 If the valve detects a leak it will shut, . Hi I thought the valve detects a high pressure. Quote Share this post Link to post Share on other sites
colinstubbs 0 Posted April 20, 2008 If you take off the ducting from the blower motor to the mixer box you can get your hand on the matrix. If it is heating up but you're getting no/little warm air it may be like mine was, simply 3/4 blocked with dust/fluff/sh1te etc. The air was all going through the unblocked 1/4, thus cooling it fairly quickly even with the fan on 1. Changed the matrix and it's all toasty now :shades: Quote Share this post Link to post Share on other sites
