Need to change the oil pressure switch on a vw passat 1998 1.8 turbo but not sure where it is.
Just want to know where the oil pressure switch is located as the warning light 'stop, oil pressure low' keeps coming on. I'm about to empty the sump, flush the system and refill with oil and i need to change the oil pressure switch at the same time (just in case). it may just be a sludge build up but might as well just do all of the above anyway while i'm on it.
Hi before you do an oil change try seafoam in the engine oil. this can sometimes fix the problems you are having, I used seafoam in engine oil and fuel and breather line and ran engine for 100 miles, but don't run hard, and its cleaned all the sump and oil veins in the engine, as checked with a scope looking though the oil sump plug. it did a really good job, my engine is a bit older than yours 1994. oil sensor is at the bottom of the engine on the sump. pressure sensor is above the oil filter it has a single wire conection
SOURCE: VW Passat turbo broken
Pricing for the replacement will vary widely based on who does the work, but you'll typically find better prices at an independent shop than at a dealership. When you choose an indie shop though, make SURE they're a Euro specialist. You honestly don't want a guy working on your high-tech turbo engine when he spends his days wrenching on Mustangs and Chevy trucks. As for whether you have to do it - yes you do. The turbo is an integral part of the car and the car won't run well at all (and will likely degrade further) if you don't fix it.
SOURCE: waste gate jammed on torbo on 2002 passat
go to alldata.diy.com pay $20.00 to get detailed info on the trubo, most likey the hose is wore out the rubber hose and will have to be replaced the waste gate keeps from over boosting the engine so if the hose is worn the clamps won't hold it any more. remove the hoses on the turbo wiggle the turbo shaft back and forth and end to end there should be no play in the shaft if there is you need a turbo kit and can buy one to rebuild it, look up bell turbos in oregon on the net and get his number he can tell you the cost of the kit and how to rebuild. If you have excessive oil on the rubber hose then you have a blown oil seal and it will need to be replaced. you are lucky at this pont and the kit will come with what you need to fix the waste gate as well, but dought the gate is the problem.
SOURCE: how much oil is required when changing the oil and filter
1998 VOLKSWAGEN PASSAT 1.8L 4-cyl Engine Code AEB/AWM Turbo
Models with 1.8L Engine codes AEB, ATW, AUG, AWM only
use engine oil that is formulated to meet
Volkswagen oil standard VW 502.00
(with viscosity of SAE 5W-40, 5W-30 or 0W-40).
CAPACITIES:
Engine, with filter..........3.5 liter To prevent overfilling during oil changes, add 0.5 liter
(0.5 quart) less than capacity shown, start engine, let run
until engine operating temperature is approx. 60 °C (140 °F)
, switch engine off, wait 3 minutes, check dipstick,
fill to full mark as indicated on dipstick (may be more or
less than 0.5 liter (0.5 quart) depending on model).
As for the sludge question, I add Marvel Mystery Oil around 600 miles before i do my oil change. This will clean out the oil pick up screen and oil journals through out the engine, I do this on every oil change and i have over 356,000 miles on my engine. Oil and filter changed every 3,000 miles intervals. Good luck and hope this helps.
SOURCE: engine sludge
There are many ways to deal with engine sludge. Simplest way is to go to the dealership and have an oil change first. Next is to put brand name cleaners next time you fill up. Also you might want to use a higher grade fuel (ex. Premium) every once in a while as well as go to gas stations such as Shell which would decrease and prevent build up.
SOURCE: my 1.8 20v turbo has no power but builds up
Check fuel system. Leaks,Dirty filter can cause this
condition. You could have gotten a tank full of bad fuel. If this is the case ,you must drain all fuel and dispose of it properly. Change the fuel filter AGAIN.
This should keep you busy this weekend.
OH, by the way you may have to replace the Turbo!!
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