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Topic: My Rabbit  (Read 39905 times)

Offline Ret.Bugtech

Re: My Rabbit

« Reply #90 on: June 04, 2013, 03:11:14 PM »
Oh look a purple bunny...
-What were you saying?

He's color blind too! My bunny is green!
Do a good wash job. You might be surprised.

Offline Russ

Re: My Rabbit

« Reply #91 on: June 24, 2013, 01:14:21 PM »
Had a really weird experience with it Saturday.

Took it to the gas station to refuel and when I went to leave, the Rabbit wouldn't start. It was acting like it had a dead battery. Clock, lights, etc. would work until you turned the key and then everything went dead. Under the hood, I could tell that the wire was a little loose on the starter, I tried to tighten by hand but it made no difference. I got one of the gas station guys to help push me off so I could roll start it, but after three attempts, the engine still would not start.

Finally just had to call AAA. He showed up in less than 5 minutes, which was amazing! We started to get it towed but he said he had a battery booster, so we gave it a try...the car fired right up. I told him I would drive it home and he said it wouldn't count as using my AAA service since it started.

Back at home, I started investigating deeper. The wire to the starter was loose, yes, so I tightened that up but it made no difference, the car still wouldn't start. So I looked at the positive terminal on the battery. Although it felt tight when I checked it with my hand, I put a wrench on and tightened it up quite a bit. Then the car started immediately.

I can understand that if the battery terminal was a little loose, it wouldn't allow enough current to flow to start the car. But what I can't figure out is why I wasn't able to start it by popping the clutch. The engine was warm enough from driving that the glow plugs were not needed. I'm not sure how having a loose battery connection would keep it from roll starting!

Offline Ret.Bugtech

Re: My Rabbit

« Reply #92 on: June 24, 2013, 05:37:51 PM »
I think I remember a solenoid on the injection pump.(it cuts the fuel off ??) Its been awhile. Maybe it didn't have enough voltage to operate because of the loose cables until the AAA jumped you off. Ask Sal he is more current than me (no pun intended  ;D ;D)

Offline volksnick

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Re: My Rabbit

« Reply #93 on: June 24, 2013, 06:33:53 PM »
I know that a little bit of mystery can occur between a slightly loose cable and the post. I think the slight gap can cause an arc and that creates corrosion. Corrosion acts as an insulator and eventually it zaps up all the power. The tight connection creates a lot of surface area and keeps the gap jumpin from happening.

As for the "why no push start," I have no idea

Offline Russ

Re: My Rabbit

« Reply #94 on: June 24, 2013, 07:11:10 PM »
I posed the same question on FunDubs and the theory there was the same. Probably an electric fuel shutoff solenoid that wasn't getting power, after all in a diesel how else would you stop the engine when you turn off the key? Unlike a gas engine you can't simply cut off the spark, so stopping fuel delivery would be the only way.

There was definitely a little corrosion on the battery terminals, this week I'm going to take them loose and clean them really good, then put them back on nice and tight.

Offline Zen

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Re: My Rabbit

« Reply #95 on: June 24, 2013, 09:07:40 PM »
I posed the same question on FunDubs and the theory there was the same. Probably an electric fuel shutoff solenoid that wasn't getting power, after all in a diesel how else would you stop the engine when you turn off the key? Unlike a gas engine you can't simply cut off the spark, so stopping fuel delivery would be the only way.

I know about as much about VW diesel engines as I do Saturn 5 rocket engines, but . . . isn't there an electric "lift pump" in the tank that delivers the fuel to the diesel pump?

Offline Ret.Bugtech

Re: My Rabbit

« Reply #96 on: June 25, 2013, 09:39:47 AM »
I posed the same question on FunDubs and the theory there was the same. Probably an electric fuel shutoff solenoid that wasn't getting power, after all in a diesel how else would you stop the engine when you turn off the key? Unlike a gas engine you can't simply cut off the spark, so stopping fuel delivery would be the only way.

I know about as much about VW diesel engines as I do Saturn 5 rocket engines, but . . . isn't there an electric "lift pump" in the tank that delivers the fuel to the diesel pump?
No. At least not on the older diesel. I don't know about TDI's.

Offline Russ

Re: My Rabbit

« Reply #97 on: June 25, 2013, 10:10:47 AM »
As far as I know the mechanical injection pump does all three. Fuel pump, timing, and injection. TDIs are a whole 'nother animal of course.

This little Rabbit has been great though. It's slow of course but for trips around town, you can't beat the fuel economy. Plus it's a lot of fun to putt around in.

Offline Ret.Bugtech

Re: My Rabbit

« Reply #98 on: June 25, 2013, 11:03:49 AM »
As far as I know the mechanical injection pump does all three. Fuel pump, timing, and injection. TDIs are a whole 'nother animal of course.

This little Rabbit has been great though. It's slow of course but for trips around town, you can't beat the fuel economy. Plus it's a lot of fun to putt around in.
You need to take your "critter" on a little trip. THEN ck your fuel mileage.
   As far as pumps go ,you are correct.  When we use to service the car and change the fuel filter, sometimes it seemed it took forever to get it started due to the injection pump having to do all the work. We started to fill the filter with fuel before we screwed it on. That eased the problem . I have seen a few early  Rabbit diesels that had a hand-pump built in the filter housing and a drain knob on the filter . I don't where they came from but all of them should have had them.  I love those little critters. I wished they had built a little wagon.  Sure they are slow, but when you get my age who cares. You might even see something along the way you haven't seen before.  The end of my ramblings for the day ;) ;)       I have another story about one of our customers and his love affair with a '79  1.5 diesel that he bought new. He kept a journal for 350k.  I'll post some of it later.
« Last Edit: June 25, 2013, 11:23:06 AM by Ret.Bugtech »

Offline Russ

Re: My Rabbit

« Reply #99 on: June 25, 2013, 11:11:00 AM »
I've driven it to Helen twice. That's probably the longest trip it's been on. I gotta say it seems like it gets better mileage in town than it does on the highway. Slightly, buy still noticeable.

I wished they had built a little wagon.

You are in luck!!

Offline Ret.Bugtech

Re: My Rabbit

« Reply #100 on: June 25, 2013, 11:35:05 AM »
NO,NO, and NO. I can't believe that came from the loins of VW. That poor thing would get in its own way on the highway. Dang Russ, You sure know how to hurt a Feller. Here I go praising you and your little Diesel and all you can do is insult me ?? Jezz !! ;) ;) ;D

Offline Russ

Re: My Rabbit

« Reply #101 on: June 25, 2013, 11:47:22 AM »
It is undeniably a wagon!! Don't worry, I wouldn't give my Rabbit up for anything.

Offline volksnick

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Re: My Rabbit

« Reply #102 on: June 25, 2013, 12:12:26 PM »
he looks so happy that VW made a wagon


 ;D ;D ;D

Offline Ret.Bugtech

Re: My Rabbit

« Reply #103 on: June 25, 2013, 12:39:39 PM »
he looks so happy that VW made a wagon


 ;D ;D ;D
Thought wagons had tongues. I guess on Dashers they are called "tow bars " I am happy because I just sold it to KC.

Offline ASBug

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Re: My Rabbit

« Reply #104 on: June 25, 2013, 04:20:46 PM »
Wha?
What did I do...
Oh look a Green Bunny...
What were you saying?
KC

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