Cars & Trucks - Page 4 - Recent Questions, Troubleshooting & Support
I have a 2005 Volvo S40. Had the ECM replaced due to sunroof hoses shrinking and draining into my passenger front and rear floors. Since the ECM was replaced I've experienced: flashers coming on and flashing all night without my knowledge (drained my battery), check engine light (dealer told me it was because of the gas cap...lol), urgent power service light, transmission message, SRS message, ABS light, traction slip message, gas needle went from full to empty, time and temperature went blank, low battery message ( battery is new).
Is the replaced ECM faulty, and causing these issues? I've already been to the dealer multiple times. It's becoming an annoyance, as they have been giving me a very condescending tone each time I explain issues...maybe I hit the hazard button when I got out of the car (random neighbor told me fladhers came on on a day I hadn'teven driven the car), maybe I didn't tighten the gas cap properly (always turn it until it clicks, and hadn't touched it in a week and a half because of Covid-19) Please help!
if dealer did work bring back and have them diagnose problem if you did check connections and check and test wiring circuits for damage corrosion loose connections
Volvo Cars &...
05 dodge caravan fuel pump is good but will not
When you say that the fuel pump is good, do you mean that you did a pressure test on it and it was in specs or do you mean that it energizes? If it does engergize then I would do a pressure test on it to make sure that it has the strength to pump fuel from the fuel tank up to the engine.
My 1996 U14 Bluebird 2.00 has done 246 th Ks and is running well in all aspects.However there is a fair bit of blow past through oil filler hole.No smoke just clean blow.Is this normal.No oil burning.Cheers
Not only does four pistons going down and up and the crank rotating cause some draught with a resulting small fluctuating pressure within the crankcase, there is also inevitably going to be some combustion pressure escape past the piston rings so if provision wasn't made for this to escape safely a considerable pressure would build inside the engine resulting in large oil leaks.
In days past any pressure was simply vented to atmosphere, usually through a pipe aimed at the ground. As time moved on things became more sophisticated and positive crankcase ventilation became quite the thing - often controlled by a pcv valve or a small drilling in the intake manifold so at low engine speed there should be a slight depression inside the engine. At higher speed excess crankcase pressure is vented through a hose into the air intake after passing through an oil mist trap to stop oil droplets escaping into the air intake.
When removing the oil filler cap from a running engine it is usual to find a sort of fluttering draught of air/gas but in the case of a definite blow you will probably discover the breather system needs cleaning, especially the oil mist trap - these are items to check/clean during routine maintenance.
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