Monday got here at last!!!!
Monday got here at last!!!!
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Discussion

mikesp

Original Poster:

373 posts

215 months

Monday 9th November 2009
quotequote all
driving Thought Monday would never arrive! On the road at last. Always wanted a Wedge but never driven one till today and it was definitely worth the wait!!

Always spent money on bikes, not cars, until now. After all the Jap missiles my last bike was a Buell XB12S Lightning. Loads of grunt, a bit off the wall, totally different to everything else, individual and ten tons of character.

Remind you of anything with four wheels??

I have to say I'm definitely smitten. Never had more fun on four wheels than today. Totally addictive. Didn't want to put it in the garage tonight. Got withdrawal symptoms already and the weather's gonna be crap tomorrow (sobs)

Just one question: Do they all run on when you take your foot off the throttle. Takes ages to drop to tickover which makes the brakes feel worse than they obviously are cos they're trying to stop the engine as well. Any comments appreciated.

Hope to meet a few of you soon at the various get-togethers. Weather permitting Goodwood on Dec 6th is on the list of reasons to drive the new toy.

Yours happy!

ed_crouch

1,169 posts

272 months

Monday 9th November 2009
quotequote all
Congrats on your new car! We're all addicted too.

No, they shouldnt run on. V8 actually has rather good engine braking on overrun. I suspect you have a pixie in the engine somewhere...

It may be a fault with the overrun valve, which allows a small amount of metered air past the throttle plate on high plenum depression (overrun) to enable overrun fuel to be burnt properly and not end up banging its way down the exhaust and shattering shop windows. Its a sprungloaded valve, and it might be badly adjusted. It sits on the rear face of the plenum top.

Any other thoughts, wedgers?

Actually its worth doing a bnch of checks on the air and fuel systems on the wedges to make sure theyre in top fettle. There is a lot that needs to be right for the Rover Engines to run totally correctly.

Which model have you bought? I say all of the above assuming its a V8?


mikesp

Original Poster:

373 posts

215 months

Monday 9th November 2009
quotequote all
ed_crouch said:
Congrats on your new car! We're all addicted too.

No, they shouldnt run on. V8 actually has rather good engine braking on overrun. I suspect you have a pixie in the engine somewhere...

It may be a fault with the overrun valve, which allows a small amount of metered air past the throttle plate on high plenum depression (overrun) to enable overrun fuel to be burnt properly and not end up banging its way down the exhaust and shattering shop windows. Its a sprungloaded valve, and it might be badly adjusted. It sits on the rear face of the plenum top.

Any other thoughts, wedgers?

Actually its worth doing a bnch of checks on the air and fuel systems on the wedges to make sure theyre in top fettle. There is a lot that needs to be right for the Rover Engines to run totally correctly.

Which model have you bought? I say all of the above assuming its a V8?
Thanks for the info. Yes it's a V8 in a 400SE. My thoughts were that it may have an air leak. I suppose the item you mention would create the same effect?

pwd95

8,459 posts

268 months

Monday 9th November 2009
quotequote all
Well done Mike. Know the feeling very well. thumbup
The high idling can be different things depending what injection system it is. If it's the later 'Hotwire' system then it's probably the stepper motor sticking a bit. The stepper motor controls the idle by allowing more or less air in when the throttle is closed. It's at the back of the plenum. Just a matter of un screwing it & giving it a clean. When you put it back just remember it has to be air tight.

http://www.car1.clara.co.uk/tvr/stepper.htm

If you haven't got one of these then you have the 'Flapper' type injection system. thumbup

ed_crouch

1,169 posts

272 months

Monday 9th November 2009
quotequote all
Ah, yeh, could be a faulty EAV (extra air valve) if its a flapper. Basically theres an air manifold that goes round the plenum supplying air for various purposes, and if it springs a leak, the idle speed will go up as excess air is getting into the plenum.

The Rover engine is prone to air leaks. A lot of the vac hoses are just push-on jobs, but I have started jubilee clipping them to be sure.

mikesp

Original Poster:

373 posts

215 months

Monday 9th November 2009
quotequote all
pwd95 said:
Well done Mike. Know the feeling very well. thumbup
The high idling can be different things depending what injection system it is. If it's the later 'Hotwire' system then it's probably the stepper motor sticking a bit. The stepper motor controls the idle by allowing more or less air in when the throttle is closed. It's at the back of the plenum. Just a matter of un screwing it & giving it a clean. When you put it back just remember it has to be air tight.

http://www.car1.clara.co.uk/tvr/stepper.htm

If you haven't got one of these then you have the 'Flapper' type injection system. thumbup
Seem to remember the seller talking about a stepper motor so guess that I have the hotwire system. Will check on the motor condition. Thanks




grahamw48

9,944 posts

268 months

Monday 9th November 2009
quotequote all
Hotwire doesn't pop and bang on the over-run (shame) whereas the flappers definitely do.

Also check that throttle linkage, return springs, cable etc are all running freely and correctly adjusted.

Check the timing isn't too far advanced.

The only time you should notice raised tickover on the Hotwire is when the engine is still cold, and then it will gradually lower in 'steps', say when sitting at lights, etc...hence the 'stepper motor'. smile

Eta: Just noticed it's a 1991, so a Hotwire it is. Congrats by the way. thumbup

Edited by grahamw48 on Monday 9th November 23:46

Blackwedge

294 posts

208 months

Tuesday 10th November 2009
quotequote all
[quote=mikesp]
Just one question: Do they all run on when you take your foot off the throttle. Takes ages to drop to tickover which makes the brakes feel worse than they obviously are cos they're trying to stop the engine as well. Any comments appreciated.


Mine is doing that too. Looks like my first DIY job on the wedge is in order!

Congratulations on getting your wedge, lets have some pictures!


mikesp

Original Poster:

373 posts

215 months

Tuesday 10th November 2009
quotequote all
Photos of newly aquired pride P&J as requested






mikesp

Original Poster:

373 posts

215 months

Tuesday 10th November 2009
quotequote all
grahamw48 said:
Hotwire doesn't pop and bang on the over-run (shame) whereas the flappers definitely do.

Also check that throttle linkage, return springs, cable etc are all running freely and correctly adjusted.

Check the timing isn't too far advanced.

The only time you should notice raised tickover on the Hotwire is when the engine is still cold, and then it will gradually lower in 'steps', say when sitting at lights, etc...hence the 'stepper motor'. smile

Eta: Just noticed it's a 1991, so a Hotwire it is. Congrats by the way. thumbup

Edited by grahamw48 on Monday 9th November 23:46
Thanks for the info. Just checked the V5. It's a 1990 not '91 if that makes a difference?

Waynester

6,532 posts

280 months

Tuesday 10th November 2009
quotequote all
Ooh...nice! yes I recognise the car/plate.

My old 400SE was a '90 and it was a hotwire. I think you can tell by the thingyamy whatsit on the back of the plenumn..?

If it has it it's a flapper - that right? wobble

Blackwedge

294 posts

208 months

Tuesday 10th November 2009
quotequote all
Looks really nice!thumbup Look forward to seeing it at Goodwood.

Not seen one with parking sensors before!

jmorgan

36,010 posts

314 months

Tuesday 10th November 2009
quotequote all
Worth checking the throttle pot voltage as well.


Welcome btw.

combine

3,114 posts

259 months

Tuesday 10th November 2009
quotequote all
This overrun thing on the revs can be caused by small leaks in the exhaust system , had the clamps on the manifolds changed and it made a big difference .

mikesp

Original Poster:

373 posts

215 months

Tuesday 10th November 2009
quotequote all
Blackwedge said:
Looks really nice!thumbup Look forward to seeing it at Goodwood.

Not seen one with parking sensors before!
Believe me you're not missing much. Always bleeps loudly when engaging reverse and sometimes doesn't switch off. It'll either be fixed soon or the wiring's spaghetti in a bin for sure. Doesn't seem in character either to be honest.

Weather permitting see you at Goodwood