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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Wed Sep 14, 2016 7:31 pm Post subject: Re: Fixing up 1994 bug |
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I really love my bug, but I've been having a few issues. I took it out the other day and the car stalled going up a ramp. I tried to start it again, but the stsrter wouldn't move much. Battery seemed kinda iffy and was from 2014, so I bought another. The car worked fine, but that very same day I had trouble with the start, as if the battery had lost it. I had been using the newly installed AC, so I thought it could be more than the alternator could give.
I used a multimeter and saw that the battery has 12.6 volts idle and when the car is running, it goes up to 13.4. With the AC on at full blast and the high beams, it goes down to 12.4.
But then I've had this issue:
Link
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Car has been running for a few minutes, it's not a cold start and it feels like it has a hard time revving up and down. In the background you can hear the AC on.
Here's how the tense are the engine bands are.
Link
Any thoughts? Could it be electrical or the fuel injection-pump?
What do I need to check? |
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stumper Samba Member
Joined: May 10, 2007 Posts: 45
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Posted: Thu Sep 15, 2016 1:13 pm Post subject: Re: Fixing up 1994 bug |
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I would be careful welding that sheetmetal that you're using. Be sure to remove the galvanizing where you're welding. You could get really sick ..... |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Fri Sep 30, 2016 2:54 pm Post subject: Re: Fixing up 1994 bug |
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I tried to use the car last weekend and I had a few issues starting it: nine to ten times, car turned, started and stopped...finally, It stsrted, but it had a tin on metal sound I didn't like.
Yesterday, I finally got the recommendation I wanted: a good bug mechanic-electrical guy, with the reputation to match. I took the car to him today, but the tripnto his shop was a mess: the tin on metal sound got progressively worse and Inthought I was losing power.
When I pulled into the mechanic's shop and he took a gander...the sound was gone. Damn bug.
Anyway, he got his diagnostics tool and went to town. The car was a bit off on the timing, the wires from the battery to the engine were not completely plugged, the engine tempmsensor is bisted (kept marking 122centigrade 251 farenheit) and the tin sound is because the oil is too thin and it goes away when the car is warm. Catalytic converter might need changing -'cause it looks like it's the original-
I'm going to see tomorrow at noon what's the diagnosis and what other things need attention, but I really like the guy. |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Wed Dec 14, 2016 11:21 am Post subject: Re: Fixing up 1994 bug |
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So the guy wasn't as good as advertised.
I took the car 4 times to him, with the same issue: the car would stall and shut off while idle, and if I turned the AC on, it would flame out if I my foot wasn't on the accelerator.
He said it was improperly wired (which I believed...the wires in the boot were a mess) and that the on-board computer was not accurately callibrated.
Every time I went to pick-up the car, it would have the same issue 4 blocks from the shop. Last time I took it to him he said he was going to re-wire it. I said fine. I wasn't able to pick-up the car, so my brother did. The mechanic told him the problem was the fuel injection and that he wanted to replace it with a carburator. That's when I really lost faith in him.
I went to a fuel injection specialist, with a shop not precisely focused on VW's, but a good all-around place. They had the car for a week and they solved the issues. Apparently there were electrical issues with the wires and the AC compressor was pinching a wire. I'll pick-up the car at 3-4 toda and hopefully now I'll be able to have my weekend driver ship-shape. |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Wed Dec 14, 2016 8:04 pm Post subject: Re: Fixing up 1994 bug |
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230 bucks later and it's all fixed. Car works fine, runs the AC without a hitch and it even sounds like a proper VW. They changed the tempmsensor, a fuse and the wires.
They did mess up the seat, it's jammed all the way forward. I'll have to go over it tomorrow. |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Sat Mar 17, 2018 5:02 pm Post subject: Re: Fixing up 1994 bug |
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So, I’ve had the bug for almost two years now and I’ve had almost no complaints.
My only gripe is that, if I use the AC, the car will stall if I don’t keep my foot on the gas. Not always, no, the senaky bugger, but enough times to make it an interesting game of “will I stall in this stoplight?” Or “can I go,over the speedbump if I don’t accelerate?”
So what could it be? Do I need to change the stock alternator for one with more pep? |
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AlmostHeavenWV_VW Samba Member
Joined: October 12, 2017 Posts: 1966 Location: WV
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Posted: Sat Mar 17, 2018 5:14 pm Post subject: Re: Fixing up 1994 bug |
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tonysantacruz wrote: |
So, I’ve had the bug for almost two years now and I’ve had almost no complaints.
My only gripe is that, if I use the AC, the car will stall if I don’t keep my foot on the gas. Not always, no, the senaky bugger, but enough times to make it an interesting game of “will I stall in this stoplight?” Or “can I go,over the speedbump if I don’t accelerate?”
So what could it be? Do I need to change the stock alternator for one with more pep? |
It seems that the issue happens at low speed? Is the car in gear when this happens?
If it occurs while car is in gear- I'd say your idle isn't high enough (effectively you are stalling via too much 'load' on the engine for the RPM at low speed, low revs with A/C compressor on)
You may know, but the A/C compressor doesn't run constantly when you have the A/C on- it should cycle off and on, as long as it runs similar to contemporary systems.
That would explain the intermittent nature:
It stalls out when the A/C compressor is on in those situations (driveline load + A/C load = too much load for the RPMs)
It doesn't stall out if the A/C compressor is in the 'off' cycle of the operation. (lack of additional compressor load allows the engine to overcome the driveline load)
Try getting a situation in which it does it and then attempt to perform the same maneuver (coming to a stoplight, going over speedbump etc in neutral but drive the same speed as usual, braking as usual,etc.)
If it occurs when out of gear, then I'm not sure. Suppose it still could be the A/C compressor having way too much drag which then can effectively stall out the engine. _________________ 1973 Standard Beetle
1600DP AK case
Solex 34PICT3 Carb
Bosch DVDA 205AJ Distributor |
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GArBa Samba Member
Joined: January 27, 2014 Posts: 2105 Location: Milano, Italy
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Posted: Sun Mar 18, 2018 2:47 am Post subject: Re: Fixing up 1994 bug |
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the stalling may be due to a bad/dirty idle control valve. try giving it a good clean and see if things improve. _________________ cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Tue Oct 23, 2018 7:15 am Post subject: Re: Fixing up 1994 bug |
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I've been using the car more lately, no AC, and it hasn't stalled once. I'm going to see about the idle valve. I also heard someone tell me that maybe I need to put a vaccum pump (?) to keep the acceleration from crapping out when I'm slowing down. He also insisted it was something that could help the carburetor, (mine is FI).
Also, I've been getting some advice for my bus regarding the tins and the deflectors and whatnot, and that mede me realize mine doesn't have a couple of tins installed. And, I don't know where, the rubber engine seal was misplaced. I'm fixing that immediately.
So, I have the left and right tins:
,
which will be installed when the rubber seal arrives.
Do I need
for the cylinders and
for the sides?
Thanks. |
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vamram Samba Member
Joined: March 08, 2012 Posts: 7304 Location: NOVA
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Posted: Tue Oct 23, 2018 8:16 am Post subject: Re: Fixing up 1994 bug |
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Yes, you must have the deflector that goes under and between the cylinders, and the other two pieces as well. _________________ Eventually, "we are what we pretend to be.’”
Give peace a chance - Stop Russian-Soviet Aggression!!
'74 Super 9/16 - present, in refurb process.
'73 Super - 6/18 - Present - Daily Driver!
'75 Super Le Grande...waiting it's turn in line behind '74.
Click to view image
Save the Supers!! |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Tue Oct 23, 2018 3:59 pm Post subject: Re: Fixing up 1994 bug |
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I jacked up the car and took a good look under.
I found that I do indeed have the tins installed (except the right sled one, but that'll be fixed soon). I don’t like how the underside is splashed in old oil. I dunno if there is a fresh leak (dipstick shows full) and the oil seems caked. I think I’m going to tell them to find the leak when they take it down to fit the rubber seal.
The thermostat is toast, car was stone cold and it’s completely extended. Also, one of the heat exchange boxes is in a very sorry state. I’m going to find a replacement. |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Sat Dec 01, 2018 1:09 pm Post subject: Re: Fixing up 1994 bug |
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The mechanic fixed the issue with the car stalling when I’m using the AC, however, today I noticed this:
The fat hose in the middle, going up:
It’s not connected behind the engine. To what it should be connected, I don't know.
And there’s also this thin, white tube:
Cut on both ends. Any clue what is it? |
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GArBa Samba Member
Joined: January 27, 2014 Posts: 2105 Location: Milano, Italy
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Posted: Sun Dec 02, 2018 11:35 pm Post subject: Re: Fixing up 1994 bug |
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the white one is the breather from the tank expansion chamber, the black one the gas vapor recover valve, they should both be connected to the charcoal canister low on the rear firewall on the right side of the car.
schematic courtesy of hopkin:
_________________ cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Sun Feb 03, 2019 2:46 pm Post subject: Re: Fixing up 1994 bug |
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Got the canister and the mechanic should rebuid the evap lines on Monday. I haven’t been using the car every weekend like I used to, because of the missing canister and the disconnected hoses. The other day I moved it at night and niticed a fairly consistent drip on the ground. I thought it was the AC, but I haven’t used it. I bent down to touch and smell it, then I looked under it to see where it came from:
Gas leak. The hose was cracked, so it was replaced. I’m glad I wasn’t driving it.
I’ll run a checklist next time I board my bug. |
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mascrappo Samba Member
Joined: January 11, 2012 Posts: 535 Location: New Mexico
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Posted: Sun Feb 03, 2019 7:42 pm Post subject: Re: Fixing up 1994 bug |
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YAY! Car is now 25 years old and can be registered in USA! I am so jealous |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Wed Feb 06, 2019 6:59 am Post subject: Re: Fixing up 1994 bug |
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Leak has been fixed and I obtained the canister. Looks good and it will be installed soon. I need to a) put in something to hold it in place and b) reconnect the evap hoses to the evac in the trunk. I'll get the hoses and see if I can do that myself. The mechanic from the shop stood me up on Monday and my patience -and my faith in humanity- has run out (it's the mechanic from the same shop in my bus restoration thread). |
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Mon Feb 11, 2019 10:10 am Post subject: Re: Fixing up 1994 bug |
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tonysantacruz wrote: |
The thermostat is toast, car was stone cold and it’s completely extended. Also, one of the heat exchange boxes is in a very sorry state. I’m going to find a replacement. |
Since my thermostat is toast, could I get away with using a modern one in my FI 1994 bug?
I've had a very, very, very hard time trying to find an OG replacement (that doesn't cost 150 bucks).
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tonysantacruz Samba Member
Joined: June 16, 2016 Posts: 245 Location: Mexico
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Posted: Tue Feb 12, 2019 10:25 am Post subject: Re: Fixing up 1994 bug |
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After running the engine a while, I check the dipstick and I cannot hold it comfortably. I thought that would change when I put in all the missing tin and seals, but it hasn't, so I'm pretty sure my bug doesn't have the Hoover bit.
question: I need to take down the engine and take it apart to put the Hoover bit in, correct? |
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vamram Samba Member
Joined: March 08, 2012 Posts: 7304 Location: NOVA
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Posted: Tue Feb 12, 2019 10:48 am Post subject: Re: Fixing up 1994 bug |
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tonysantacruz wrote: |
Since my thermostat is toast, could I get away with using a modern one in my FI 1994 bug?
I've had a very, very, very hard time trying to find an OG replacement (that doesn't cost 150 bucks).
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I would not use that one for the shround cooling fins. Here's one for less than $150 - granted still not cheap but you should do the thermstat correctly, it's a critical part.
https://www.vwnos.com/043-119-159
You'll have to check to see if it's correct for FI. I *think* it is because it's higher temps. _________________ Eventually, "we are what we pretend to be.’”
Give peace a chance - Stop Russian-Soviet Aggression!!
'74 Super 9/16 - present, in refurb process.
'73 Super - 6/18 - Present - Daily Driver!
'75 Super Le Grande...waiting it's turn in line behind '74.
Click to view image
Save the Supers!! |
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grandpa red Samba Member
Joined: November 23, 2018 Posts: 520 Location: Hollister,Ca.
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Posted: Tue Feb 12, 2019 10:50 am Post subject: Re: Fixing up 1994 bug |
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I dropped mine to install missing tin,a Hoover bit and to replace some seals.
I don't see how it would be possible to install the bit with engine in. _________________ '72 Beetle |
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