1989 VW cabriolet, fuel odor, engine stalls in 1st and 2nd gear
Manual Transmission, High pitched humming sound right rear side (passenger), smell of gasoline, the gas cap is not locking all the way, engine needs gas (throttle) to start engine, idles fine upon startup, after engine runs for 1/2 hour engine stalls at stop signs, when hot, car does not idle (stalled) when gas pedal is depressed once running cannot exceed 40 rpms and stalls, car needs to cool down then startup is fine, Car jolts when stalling.
I need help diagnosing this issue, I recently purchased car, I need an emissions test, every time I bring for testing the car will not idle, too hot, I am asuming. I have replaced the fuel filter, oil filter and the air filter, put in new fluids, oil, anti-freeze etc.
Re: 1989 VW cabriolet, fuel odor, engine stalls in 1st...
Ignition system sounds probable on vhicle when everything gets warmed up. High pitched hum could be bad tire or worse bearing.
Testimonial: "Thank You for your response. The huming sound is present on idle from start-up,tires have just been replaced, would fuel pump be suspect?"
Yes it could be a fuel pump. nd leaking gas cap can pose some problems start small and hope big sorry I couldn't be of more helpYes it could be a fuel pump. nd leaking gas cap can pose some problems start small and hope big sorry I couldn't be of more help
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Re: 1989 VW cabriolet, fuel odor, engine stalls in 1st...
I have a 1990 VW Cabriolet that had the same problem. My mechanic replaced the fuel transfer pump and it fixed the problem with the fuel smell and the noise on rear passenger side. My car still has the low idle problem, but it's not related to the fuel pump. I have to run the air conditioning to keep the idle up when I'm not pressing the gas pedal. I wish I knew how to fix that. Hope this helps! (I found a fuel pump for $20 on ebay, installed by a mechanic, but I just got lucky on the price. Usually they cost much more.)
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It could be a loose/failed engine or transmission mount. Look at the tranny rear mount and check the bolts and condition. Also check the bell housing bolts AND the bolts connecting the engine flywheel to the clutch pressure plate.
have you checked the oil level? Transmission oil should be up to the fill plug, when it is removed. Somewhere on the side, about half way up. That is where it is filled also.
The first and second gear thing sounds like the pressure plate is worn or maybe the throw-out bearing is shot. The rough idle could be from a bad spark plug, bad plug wire or maybe something worse (clogged injector, fuel filter).
yes. Depending on where your fuel filter is located, you can disconnect the fuel line at the fuel filter and then try to crank the car over. If it spits fuel out of the disconnected line your pump is working, if not then it's bad. Another way to tell, but not always is when you car is started you hear a high pitched whining sound from the tanks. This is usually (again, not always) an indication of a fuel pump about to fail.
The humming noise is coming from the fuel pump. Its possible its getting ready to fail. These start making noise when they are going bad. The smell can be coming from bad gas cap not sealing up fuel tank properly and or a fuel pump/sending unit seal. You can pull the back seat bottom out easy enough by removing 2 5mm alan screws that secure it to the floor. Remove the seat bottom buy pulling out and remove black cover under seat bottom that has 3 philips screws. you may smell fuel more promanently here.
the first thing is to figure out which pump... there is a transfer pump (in the fuel tank) and a high pressure pump (under the right rear of the car) get under the car and have someone turn the key to "run"... if you HEAR a humming sound coming from the pump that you can SEE, then it is most likely the transfer pump... if you hear NOTHING then remove the boot on the pump and check for voltage on the positive terminal using a light or a meter. If no voltage then check fuse or the fuel pump relay. (hint: you should hear a "clicking" sound with your ear close to the fuse panel when you turn the key...) VW fuel pumps are really reliable as long as you don't have too much dirt or water in the tank. Eliminate the electrical circuit and high pressure pump as suspects before looking at the transfer pump. Hope this helps.. (oh, and have a clamp handy when changing the high pressure pump to avoid a huge fuel spill!)
Thank You again.
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