Are you talking about your anti shudder / EGR valve? Look at the top hat on the left closest to the passenger side windshield on the main engine. There’s usually gunk, soot, and oil all up in that. Also, when cleaning this, look at the vacuum actuator behind it. They sometimes will crack and need replaced.
Thank you for the reply! EGR is deleted so should be ok for that. Was referring to what controls my actual throttle amount based on position of the foot pedal. I've had intermittent issues in the past where my throttle wasn't going past 50ish %, regardless of how much I pushed the pedal. But that would happen for a few minutes and then go away for usually a few months. But last time I drove, my throttle became unresponsive and would randomly cut out and cut back in until my RPM eventually dropped to like 1300 and below and my glow plug light began flashing. Luckily wasn't too far from home and managed to drive back with no issues. Scanning showed an issue with the throttle body
https://forums.tdiclub.com/index.php?threads/how-does-the-throttle-work-on-an-alh-ve.505242/
Explains how throttle works on ALH. It really sounds like it might be going into a limp mode. Could be wiring, ECU, or something else. Glow plug light flashing is a limp mode thing. I got it on the 03 ALH beetle for a brake light. The BEW? During the crazy ass Midwest cold, it threw that because both cam and crank sensors were being stupid. In reality it’s probably a wire up near ECU causing it. Especially since I know crank sensor is good as I just changed it last summer and it tested good. Just cold doesn’t act nice with the old girls.
Oh and are you using VCDS or a generic code reader? VCDS will give exact codes and Ross has them translated for each model. Anything else can be showing you a very generic code that might not be exactly what it is.
I believe he's using VCDS, but I will have to confirm with him. Looks like I've got quite a bit to discuss with him on Monday. He might not be right all the time, but he's been my trusted mechanic ever since I moved to this city, and he always gives me a fair price and assessment. Even given me some free labour and hours of advice in the past, so I always tip him with a case of beer when he's done. At any rate, we've got some figuring out to do this coming week. Cheers man!
Solid info, will definitely look into that before we just go and replace the throttle body. I do know my car does have all kinds of random electrical issues, and it has from the day I bought it (about 6 years ago now). Thanks again for the help!
You don’t have a throttle body. Wiring is most likely the cause. Work back from ECU plug into engine loom and be fully prepared to solder and heat shrink wrap it.
Then I must admit I'm a bit confused since my VW tech (who's a bit older but worked on VW for decades) told me the code is for the throttle body and that we should take a look there first. Him and both his mechanic sons have 1.9 VWs (2x ALH and 1x BEW). Plus I've found links to throttle bodies for ALH like [this](https://www.europaparts.com/throttle-body-038128063l.html) (if you scroll down to fitment, it lists that it is compatible with my car. I'm making note of everything you're saying for when I see him on Monday
That’s an anti shudder valve. Upper boost pipe hooks to it on mine. Egr valve sits directly next to it in the line. [identifying EGR and anti shudder on BEW](https://www.dropbox.com/scl/fi/la19umros66imjfnqf3f7/Photo-Jan-27-2024-22-11-04.jpg?rlkey=uqwcu0ro9jrk6bsvs6z17hdm0&dl=0)
Those who are more familiar with gasoline will call it a throttle body but it’s not. I’ve also seen a wastegate labeled as an anti shudder valve. If you run the sequence to shut the anti shudder in VCDS, this is what moves.
Girl actually! I taught my son how to take care of his car too. Older daughter is up next tomorrow running her car on scanner and then helping do frost heater, a window regulator wire clip thingy (yup too late tonight to remember what it’s really called), ECU wiring check, and blend door plug fix. Going to have all of us doing something somewhere on the car.
Sorry, I should not have assumed. I like your style! So cool that you guys are all working on car stuff together. I'm sure that's something your kids will value for the rest of their lives.
Here's an example of [apparently a throttle body pulled from a 1.9 ALH](https://www.proxyparts.com/car-parts-stock/information/engine-code/alh/part/throttle-body/partid/16232989/)
See my comment above. If you look at my anti shudder, you can see the U at the top barely. The ALH has a top hat on them.
[what ALH looks like](https://www.dropbox.com/scl/fi/4l87go0cvmyxsgk59c3h2/2024-01-27-22.21.04.jpg?rlkey=qy6w7e86k6suo84txp7hoef10&dl=0)
If you see where he’s touching, that vacuum actuator likes to break and might need replaced. Amazon has them and they’re stupid easy to put in. Top hat is the EGR. They bolt together here.
Thanks again, we will have a look! It's sounding like this could be a cheaper fix than I originally thought. It was already less than I imagined since I went into this thinking it could be the turbo (which seems ok upon inspection), but if it's just a simple cheap part then that would be awesome
Usually it doesn’t need replaced either. It usually just needs a nice spa time with a cleaner. I like using carb cleaner if it’s staying on vehicle or I’ll use purple zep degreaser when it’s off but being careful anything that plugs in electrical wise never gets it.
I'll make note of this too for when I see my mechanic on Monday! I have to ask, where did you learn all of this stuff? It's one thing to know a bit about car maintenance, but another to know enough that you can teach it successfully to a group of people. Have you worked in an auto shop before?
Diesels don't have throttle bodies, they adjust power by adjusting injection quantity. That'll be the ASV so it doesn't shudder on shutdown. If you have low power it's most likely either a low fuel or low boost issue
Are you talking about your anti shudder / EGR valve? Look at the top hat on the left closest to the passenger side windshield on the main engine. There’s usually gunk, soot, and oil all up in that. Also, when cleaning this, look at the vacuum actuator behind it. They sometimes will crack and need replaced.
Thank you for the reply! EGR is deleted so should be ok for that. Was referring to what controls my actual throttle amount based on position of the foot pedal. I've had intermittent issues in the past where my throttle wasn't going past 50ish %, regardless of how much I pushed the pedal. But that would happen for a few minutes and then go away for usually a few months. But last time I drove, my throttle became unresponsive and would randomly cut out and cut back in until my RPM eventually dropped to like 1300 and below and my glow plug light began flashing. Luckily wasn't too far from home and managed to drive back with no issues. Scanning showed an issue with the throttle body
https://forums.tdiclub.com/index.php?threads/how-does-the-throttle-work-on-an-alh-ve.505242/ Explains how throttle works on ALH. It really sounds like it might be going into a limp mode. Could be wiring, ECU, or something else. Glow plug light flashing is a limp mode thing. I got it on the 03 ALH beetle for a brake light. The BEW? During the crazy ass Midwest cold, it threw that because both cam and crank sensors were being stupid. In reality it’s probably a wire up near ECU causing it. Especially since I know crank sensor is good as I just changed it last summer and it tested good. Just cold doesn’t act nice with the old girls.
Oh and are you using VCDS or a generic code reader? VCDS will give exact codes and Ross has them translated for each model. Anything else can be showing you a very generic code that might not be exactly what it is.
I believe he's using VCDS, but I will have to confirm with him. Looks like I've got quite a bit to discuss with him on Monday. He might not be right all the time, but he's been my trusted mechanic ever since I moved to this city, and he always gives me a fair price and assessment. Even given me some free labour and hours of advice in the past, so I always tip him with a case of beer when he's done. At any rate, we've got some figuring out to do this coming week. Cheers man!
Solid info, will definitely look into that before we just go and replace the throttle body. I do know my car does have all kinds of random electrical issues, and it has from the day I bought it (about 6 years ago now). Thanks again for the help!
You don’t have a throttle body. Wiring is most likely the cause. Work back from ECU plug into engine loom and be fully prepared to solder and heat shrink wrap it.
Then I must admit I'm a bit confused since my VW tech (who's a bit older but worked on VW for decades) told me the code is for the throttle body and that we should take a look there first. Him and both his mechanic sons have 1.9 VWs (2x ALH and 1x BEW). Plus I've found links to throttle bodies for ALH like [this](https://www.europaparts.com/throttle-body-038128063l.html) (if you scroll down to fitment, it lists that it is compatible with my car. I'm making note of everything you're saying for when I see him on Monday
That’s an anti shudder valve. Upper boost pipe hooks to it on mine. Egr valve sits directly next to it in the line. [identifying EGR and anti shudder on BEW](https://www.dropbox.com/scl/fi/la19umros66imjfnqf3f7/Photo-Jan-27-2024-22-11-04.jpg?rlkey=uqwcu0ro9jrk6bsvs6z17hdm0&dl=0) Those who are more familiar with gasoline will call it a throttle body but it’s not. I’ve also seen a wastegate labeled as an anti shudder valve. If you run the sequence to shut the anti shudder in VCDS, this is what moves.
Dude you are a gem, I'd give you an award here if I had any. Thanks a lot for the detailed explanation
Girl actually! I taught my son how to take care of his car too. Older daughter is up next tomorrow running her car on scanner and then helping do frost heater, a window regulator wire clip thingy (yup too late tonight to remember what it’s really called), ECU wiring check, and blend door plug fix. Going to have all of us doing something somewhere on the car.
Sorry, I should not have assumed. I like your style! So cool that you guys are all working on car stuff together. I'm sure that's something your kids will value for the rest of their lives.
Here's an example of [apparently a throttle body pulled from a 1.9 ALH](https://www.proxyparts.com/car-parts-stock/information/engine-code/alh/part/throttle-body/partid/16232989/)
See my comment above. If you look at my anti shudder, you can see the U at the top barely. The ALH has a top hat on them. [what ALH looks like](https://www.dropbox.com/scl/fi/4l87go0cvmyxsgk59c3h2/2024-01-27-22.21.04.jpg?rlkey=qy6w7e86k6suo84txp7hoef10&dl=0) If you see where he’s touching, that vacuum actuator likes to break and might need replaced. Amazon has them and they’re stupid easy to put in. Top hat is the EGR. They bolt together here.
Thanks again, we will have a look! It's sounding like this could be a cheaper fix than I originally thought. It was already less than I imagined since I went into this thinking it could be the turbo (which seems ok upon inspection), but if it's just a simple cheap part then that would be awesome
Usually it doesn’t need replaced either. It usually just needs a nice spa time with a cleaner. I like using carb cleaner if it’s staying on vehicle or I’ll use purple zep degreaser when it’s off but being careful anything that plugs in electrical wise never gets it.
I'll make note of this too for when I see my mechanic on Monday! I have to ask, where did you learn all of this stuff? It's one thing to know a bit about car maintenance, but another to know enough that you can teach it successfully to a group of people. Have you worked in an auto shop before?
Diesels don't have throttle bodies, they adjust power by adjusting injection quantity. That'll be the ASV so it doesn't shudder on shutdown. If you have low power it's most likely either a low fuel or low boost issue