Losing coolant at an alarming rate...
but nothing is leaking from the car, I just filled the coolant 2 days ago and its already telling me my coolant is low. I checked and it is really low, probably lost over 1/4 since filling it. Does anybody know what could be going on. Also the car tends to cut out on me when my A/C is on. Even when im moving! I was in traffic in 3rd gear and the car cut off! twice! its starting to scare me. Any insight would be appreciated. I have a '90 525i
damn you got me scared now
im gonna look into getting it tested, thanks
Yes - try replacing the reservoir cap.
that solved coolant loss on my 733.
used a cap that said "140" on it (from 88 M5).
old cap said "100"
Mike the 100 means that the pressure at which the cap would
popoff and release the pressure to the outside dump tube is
1.00 bars.. or 14.5 psi... the 140 opened at 1.4 bars or 20.3 psi...
The newer e34's all have caps that open at 2.00 bars or 29.00 psi so the newer ones are already at a much higher pressure... Although I think that the redesigned recall caps release at a lower pressure than the 2 bars to keep the heater core from really letting go on a overheat...
Quote:
Originally Posted by mike wong
that solved coolant loss on my 733.
used a cap that said "140" on it (from 88 M5).
old cap said "100"
it is usual to NOT see any leaks
because quite often the coolant loss only takes place when the system is up to full pressure...I had a hose that was split almost its whole circumference.Only by looking really carefully did i see brightly coloured(insert blue or green here) fluid trapped in some casting relief areas....Check all your hoses by squeezing em..if you hear any hissing or slurping sounds NOT from the expansion tank area,you have found your problem but it could be the water pump too.......