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Post by Steve White on May 22, 2006 18:05:43 GMT
Thought I would kick off the new section with a worsening problem my car seems to have.
When you take your foot of the throttle and then press is again there is some resistance, right at the start of the travel. There has always been a little bit of resistance there but lately it seems to be getting worse. If you keep pushing you can push past the stick point but it has a habit of making you surge forwards suddenly. Not good when trying to pull away smoothly. Also doesn’t do it every time, probably 1 in 5 presses.
I checked the throttle body over at the weekend while cleaning my ITG filter, and it seems to move freely, so assume the problem must be with the throttle cable, or possibly the pedal assembly.
Going to a cable oiler and try that first, but other ideas? anything that could be wrong with the pedal box?
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Rich
Loads 'a' postings!
Stripey :-)
Posts: 944
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Post by Rich on May 22, 2006 18:57:04 GMT
I would go with the cable. But I would just change it rather than try and oil it. It may have become kinked and oiling won't work Talking from experience. Do you remember the MG/Rover run into London after Rovers demise? Well I was on about my fifth lap, when my cable snapped.....I limped off on tick over until the Knight in Red and Cream armour appeared. Complete with throttle cable and changed it for me Every club needs a Scarlet
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Post by Bruno on May 22, 2006 19:00:00 GMT
Hi Steve, Take care with grease on the throttle cable. When you are lubricating this cable with the wrong product (like grease), you had to know that it can become worse then before, because of the fact, that grease is sticky, and dust and sand will stick into the grease. So if you want to oil the cable, take the good product. Just oil isn't good also, because of this oil will disapear after a while. There are some good produts on the market to oil a cable, so inform yourself well. Example of such a product is HT-oil from Kent (you can't buy it in a shop, but had to ask for it in a garage) : www.kenteurope.com/uk/shop/viewfamily.php?viewfamily=4852§ionid=228&type=Auto
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Post by Steve Tyler on May 22, 2006 19:21:44 GMT
Hi Bss, You say you checked the throttle body but was the engine running. Not uncommon to have an intermittant resistance of the butterfly when the engines idling. Never really worked out why (never had the time) but changing the throttle body cures it.
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Post by Scarlet Fever on May 22, 2006 21:46:33 GMT
I've replied to this on MGR.org Steve. And i've changed three throttle cables now, mine once (badly - got a stiff accelerator pedal, this is why i carry a spare, i'm expecting to have to do it again sometime in the future) one in my garage and one by the roadside (Rich). The roadside one was around 20 minutes or so, i reckon i could get it down to 15 ish if i had to - it's not a big job at all - the only hard part is getting into the footwell to unbolt the accelerator pedal assembly (not easy for a person of my build!) Anyway, i carry a spare cable with me (and a spare bonnet release cable these days too) - they are readily obtainable from a scrappy for peanuts and are a pretty easy job to do in an emergency situation.
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Andrew
Got the board sussed!
Posts: 82
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Post by Andrew on May 22, 2006 22:36:57 GMT
Maybe try checking the butterfly. I had the same problem and it turned out to be black sticky gunk that the butterfly was sticking in when closed. Made moving of at lights a real pain in the rear. Carb cleaner sorted it.
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sanders
Learning the ropes
mg_xpower
Posts: 32
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Post by sanders on May 22, 2006 23:01:17 GMT
Fit the PTP Engine with MTB's. If it doesn't work then change the cable
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Post by Nickmgf on May 23, 2006 9:17:05 GMT
i had this problem, put on the alloy tb and hey presto it was sorted. Plus the car feels better and sounds better sine fitting it.
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Post by Steve White on May 23, 2006 11:42:55 GMT
i had this problem, put on the alloy tb and hey presto it was sorted. Plus the car feels better and sounds better sine fitting it. Nick, I have a TF160 which has an alloy TB as standard. Anyway, after some tinkering last night I have fixed the problem. Only thing is I'm still not 100% sure what the problem was :lol: I started by having a look at the pedal assembly, nothing obviously wrong other than I discovered if you fully press the accelerator it stopped up against the carpet, so I cut a chunck of soundproofing away behind the pedal and now it stops on the pedal stop instead must be good for another 20BHP...... Followed the cable all the way through the car, and found no kinks so ended up back at square 1, the throttle body. As i was checking the cable was free and running it the cam properly as per Andy's suggestion, and I got the TB to stick. I discovered that it only stuck when you closed the throttle quickly, almost like it was sticking on the idle control screw. Closing it slowly didn't produce the sticking. Everything on the outside of the TB looked clean and free so I took the filter hose off the TB to take a look at the butterfly. Guese what? once the hose was off the sticking disapeared! This was even more wierd as the first thing I had checked when the problem presented itself was that nothing was catching on the TB cam or on the cable, so I know the clip wasn't interfering with anything. I've heard about cases of plastic TBs distorting if you do the hose clip up too tight, but have never heard of it happening on an alloy one but this is the only explanation I can come up with at the moment. Anyway, I turned the clip round a bit so the tightening screw was as far from the cam as possable, and tightened it up just enough to hold the pipe on. Finger crossed but it looks like its cured the problem, whatever the problem was......
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Post by Nickmgf on May 23, 2006 11:52:08 GMT
oh sorry bss. Did not realise, my appoligies.
Let us know if it is a defo fix though as there are prob some people out there that this will happen to.
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