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Discussion Starter #1
I got this beetle used, has 175000 miles and last owner abused it. They poured watering the gas tank, let the brakes rust etc.

When I got the car I couldnt get it past 1500rpms and then to do that I had to pump the gas pedal fast. I drained the tank, replaced the fuel filter and pulled : cleaned the plugs and now she will easily get to 4500rpms if I slowly rev the engine or pump the pedal, but if I just step on it nothing happens. It's like the engine dies though if I let up on the gas it will keep idling fine. I have let it run for over an hour and it runs smooth. I don't want to replace parts guessing, can anyone guide me as to what to look for next?
 

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First step is always to gather clues in order to find a 'direction' to follow in order to do repairs. Most auto parts houses will pull the codes free. And it is a good place to start.

S-
 

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You could get an inexpensive reader yourself and find out what code it displays. It's a good tool to have and will make diagnosting your problems easier.

-jeffrey
 

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Depending on which area you live in? Several members would be able to give a hand.

If not? If you have a laptop or a smart phone? You're in good shape. The parts needed to turn a laptop into a basic scanner can be purchased off eBay or Amazon pretty cheap. Smart phone with bluetooth? Get an wireless adapter that plugs into the OBD 2 port on the car, and use a cell phone app.

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Keep in mind, I like to buy stuff sold in America--and that one is located in China. (Then again? They are all made there--but considering shipping time....)

Check out the post Red listed. He's got some solid information and should help make the right choice.

I use a USB interface to my laptop--but it's a bit of a pain in the rear end to drag the 'Crap-Top' out every time the car has an issue..

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Discussion Starter #11
I did some work on the Beetle today, made sure all vacumn hoses were connected, cleaned the MAF, I have some videos (on youtube) of how it is running and I am hoping you could give me some direction to go next:

Just started up / cold
Jan 15, 2014 - YouTube

Running for about 10 minutes

Jan 15, 2014 - YouTube

After cleaning MAF, checking vac lines and letting it run for about 30 minutes
Jan 15, 2014 - YouTube
 

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Discussion Starter #13
Yeah she is lit up! I ordered a fuel pump, gonna replace it, symptoms seem to suggest it may be having problems
 

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Does it still have the original catalytic converter? You could have a plugged cat. I've seen other suggest diagnosing the cat by removing the front O2 sensor to see if it will run better.
 

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Discussion Starter #16
Replaced fuel pump / no change / until I get the adaptor to find out what the computer says I am at wits end. I don't know where else to look
 

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Try taking out the O2 sensor. If the cat is plugged that little opening will be enough to let the exhaust out and the engine will run better.
 

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Nothing worse than throwing a perfectly good parts at a car and nothing changes. A plugged up catalytic converter will throw a multitude of codes including po300 and other misfire codes. The best way to diagnose a problem is to start by checking the codes. :)

Sent from AutoGuide.com App
 

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Discussion Starter #19
Gonna try the cat. It's frustrating waiting for the code reader to get here. Have to resist spending money on stuff till I know! Is there anywhere online where there are diagrams for fuel lines, brake lines vacuum lines etc?


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Discussion Starter #20
Doing research I see a lot of mention about resetting the throttle body as it can make the car run rough. Everyone mentions that they had disconnected the battery, I have been taking it out so that it doesn't get cold in between testing / can this disconnecting of power be causing any issues when I reconnect and start it up?


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