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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old March 8th, 2018, 03:24   #1
lojosh
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Join Date: Jan 2012
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Fuel Economy: 40 mpg
Default 2001 Beetle starts but something is not right.

Okay here is what happened. I drove home from work last night which is 45 miles from my house and stopped at a convenience store and shut off my car. I was there about 15 to 20 minutes. when I came back out to start my car, it started but it was like the glow plugs were not working. The engine was really hard to start and super rough. So I thought I didn't give the glow plus the proper amount of time. So I tried again making sure the glow light went off. Same thing. About 2 weeks ago I had the engine code for glow plug system come on in which I did find that 2 of my glow plugs were bad so I replaced them all,plus the harness and relay. I was wondering could this be something linked to a turbo problem? I have notice that my mileage has not been as good lately. Around 36mpg instead of 40mpg. If so what should I check for and how bad could it have hurt the engine if it was oil in the cylinders. Hopefully not the last problem but any ideas or suggestions would be appreciated.
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Old March 8th, 2018, 04:08   #2
Tdijarhead
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Fifteen to twenty minutes in the store in the middle of a 45 mile drive, your glow plugs aren’t even needed.

From your description it looks like the glow plug light came on like normal, correct?

Was the asv open?

Do you have the means to check the timing?
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Old March 8th, 2018, 04:23   #3
lojosh
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Yes, the glow plug light came on like normal. On the timing not really, I had a new timing belt put on about 15,000 miles ago by Chad in Wichita, a mechanic on the TDI forum list. And as for the ASV, not sure what that is.
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Old March 8th, 2018, 04:37   #4
lojosh
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I can look up on how to check the timing and run thru the steps. I did clean the intake and EGR valve about a month ago. The only reason I brought the problem about the turbo is when I was cleaning the intake the build up inside of it was not as rock hard as the viedo's that I saw on the web. It was not soft but it did have like oil film on it. So that is why I was asking about the turbocharger. Maybe a seal was leaking and now there is oil where it shouldn't be?
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Old March 8th, 2018, 04:44   #5
Tdijarhead
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Anti shudder valve, they close when you turn the car off and then open back up. When they get sticky or you have a vacuum leak they stay closed and the car won’t start.

As for falling mpg’s, go through oilhammer’s sticky.

http://forums.tdiclub.com/showthread.php?t=342274

Last edited by Tdijarhead; March 8th, 2018 at 04:52.
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Old March 8th, 2018, 05:01   #6
UhOh
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Battery/charging system?

How well is the starter spinning the engine? If you're not spinning well then that'll cause difficulties in starting.

Oh, if nothing seems to go Right then try going Left
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Old March 8th, 2018, 09:27   #7
lojosh
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The battery and charging system are fine. The starter is spinning everything just fine. It starts, but it is rough, so rough I don't want it to run. It was running fine when I shut it off. I pulled the hose off the EGR valve and Turbocharger they are nice and clean. I checked all the vacuum lines they seemed fine. I did a quick look at the timing belt it is still tight. I know that might not mean much, but that's where I am at now.
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Old March 8th, 2018, 09:48   #8
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I guess we'll have to use the values of "fine."

Have you scanned for codes?

My "crystal ball" guess would be a crank position sensor or 109 relay. But, verify you're getting fuel (and no air) to your injectors) first.
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Old March 8th, 2018, 10:22   #9
BobnOH
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Quote:
Originally Posted by lojosh View Post
....................... The engine was really hard to start and super rough......................
Interweb guess- A big pipe came loose, or vacuum tubes bad or some control just decided to go. See if there is an additional stored code.
Never hurts to check timing belt, bad timing would also cause this.
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Old March 9th, 2018, 22:04   #10
PHOTOGUY1000
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Fuel system? Maybe change fuel filter & valve on top cant hurt. Maybe IP getting ready to go?

Last edited by PHOTOGUY1000; March 12th, 2018 at 13:11.
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Old March 10th, 2018, 03:31   #11
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These IPs aren't really HPFPs, but that's not saying the IP isn't the problem.

The fuel filter is, of course, a low-hanging piece of fruit. OP, what's the state of your fuel filter? Maybe there's some gelling (of other blockage)? Maybe something in the fuel pickup in the tank? These things can be isolated by running from a separate fuel source/container (refer to diesel purge procedure).

If the problem can be duplicated then that'll for sure help trace the source of the problem.
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Old March 10th, 2018, 06:40   #12
whitedog
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A compression check would tell you if you have bent rods from oil ingestion, but unlikely for it to go from running fine to this from your description of events.

What does Chad think?
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Old March 11th, 2018, 03:05   #13
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If one is concerned about oil ingestion then pop the lower IC pipe and check for oil. I'm thinking that there is no such issue here.

IP/timing.
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Old March 11th, 2018, 17:09   #14
lojosh
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I am still trying to get this figured out, and appreciate all the help. And I apologize for some of my terminology. All of the vacuum lines are good I checked them all. Some of the other test I couldn't run because I do not have a mighty vac or any other type of vacuum tester. I was trying to get it figured out before calling Chad. But that will be my next step if I can't get it here soon. The temperature the day this happened was around 50 degrees. I change my fuel filter every 20,000 miles. It is time for a oil change and fuel filter change and was planning on doing that this weekend until this problem. happen. Again thanks.
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Old March 11th, 2018, 17:26   #15
lojosh
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Here is another thing I found yesterday while working on it. I pulled my bash plate off to check the vacuum line down to the turbo. When I did I found a bolt there on my bash plate. This bolt has a 17mm head on it and a 2mm thick washer that will not come off and the threaded end is about 12mm long. I been trying to figure where this fell out from. I know this is not much to go by but that's what I got. Again thanks for all the suggestions and help.
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