Sudden loss of power after stalling the van

[CJH]

I would have thought that means exactly the opposite. If the clutch was slipping then the engine could continue to turn, rather than stall, even with your foot off the clutch. So I'd say your clutch (and your handbrake) are fine.

[clift_d]

If I'm understanding correctly Dan is saying that it only stalled when the clutch was almost completely engaged, which doesn't sound like the clutch is biting soon enough.

[CJH]

True - but if it stalled doesn't that mean that it is biting at least?

I'm not clear on the original description. Dan - you said it revs ok but it's not pulling as it should. Does it feel like the revs are rising without the road speed increasing? Or are you saying that you can rev the engine with the clutch depressed but when you release the clutch the revs (and road speed) won't pick up as normal?

[weimarbus]

If it stalled on a hill I would have thought that it is unlikely to be a slipping clutch as the weight of the vehicle on the hill would be more likely to increase clutch slip. As you have fuel injection It would be worth checking the air flow meter and as previously suggested the Lambda sensor to see if they have been damaged by the engine coughing back when stalling and contaminating the surfaces of either with neat fuel. I did have a similar problem on a Discovery V8 but not sure how the injection system differs on t25 as mine is DG carbed.

[danmetallic]

Morning all, after the test last night and the commend from Weimarbus I think the clutch can maybe be eliminated.

In answer to your question CJH... with van stationary the revs and idle appear to be fine and dandy. Driving in 1st, 2nd and maybe 3rd everything appears to be normal. Top end of 3rd, going through 4th and 5th (post stalling on the hill) it now feels like something is holding the van back. Foot down, revs staying as they should but taking longer to pull up to top speed. Make sense?

Weimarbus, how do I go about checking AFM and Lambda?

Thanks everyone, Dan

[ELVIS]

DJ doesnt have a lambda chap.

Go on syncrosport website and goto manuals and loads . Has the factory injection manuals as downloads IIRC.

[ELVIS]

http://syncrosport.com/info/manual/VW_T ... nj_Ign.pdf" onclick="window.open(this.href);return false;

[weimarbus]

Hi Dan, Sorry I'm a dinosaur when it comes to modern technology, hopefully Elvis's link can help you, I didn't even know that there's no lambda on a DJ

[clift_d]

Morning all, after the test last night and the commend from Weimarbus I think the clutch can maybe be eliminated.

I'm not sure whether that's the right conclusion to draw, given what you've said about how the van is performing. If it it's revving okay and didn't stall straight away with that stationary 4th gear/handbrake test, then that suggests the clutch isn't biting properly i.e. it is fubar. Still it's probably worth eliminating a few other possibilities before getting someone to open it up, I just wouldn't rule out the clutch yet.

[ghost123uk]

Re this possible clutch issue. I only mentioned it as danmetallic said it first occurred after a stall on a hill. My thinking was that often, after a stall on a hill, there is a frantic engine re-start, then a lot of revs and clutch use to prevent another stall. If this had happened, that might have been the final straw for a tired clutch. On the other hand, his clutch might not have been tired, and shrugged off any slight abuse with no issue.

Now, I often consider the following. All experienced mechanics, either DIY or Pro, can identify a slipping clutch straight away, no if's or but's. However the non experienced might not recognise it. I often have difficulty in putting into words, the symptoms of a slipping clutch. The best I usually come up with is "is the engine sounding like it's revving up fine, but the van isn't going as fast as it should"

I started this clutch discussion, but would like to point out, it was only a suggestion. The cause could easily be summat else. This is where a test drive by an experienced mechanic is worth a thousand guesses by us working on written evidence only.

[danmetallic]

Am I right in saying that if the clutch was going the revs would be a lot higher?

[ghost123uk]

Am I right in saying that if the clutch was going the revs would be a lot higher?

This is it you see. Yes, higher than it should be for a given road speed. It's hard to explain in words

[danmetallic]

Am I right in saying that if the clutch was going the revs would be a lot higher?

This is it you see. Yes, higher than it should be for a given road speed. It's hard to explain in words

I have to say that knowing her sound v well I would say revs are behaving as expected. It's just that everything feels held back.

[ghost123uk]

Right, so almost certainly nowt to do with the clutch.

[danmetallic]

Right, so almost certainly nowt to do with the clutch.

You WANT it to be the clutch don't you?