disconc Posted April 20, 2018 Share Posted April 20, 2018 Hi everyone, I am slowing moving towards finally MS1 fuel and spark (for the last 7 years, I was using MS1'n'EDIS spark only... don't beat me ), and as I have an annoying warm engine stalling issue I believe is linked to the AFM or TPS or 14CUX... I will move away to MS. Now, in preparing this conversion, and considering the TPS on my engine is 20 years old and might be giving me trouble already maybe, I was willing to replace it. When looking for this part, ERR2263, I discovered it is "SOLD OUT" everywhere, or selling at more than gold crazy prices. I am sure I am not the only one in this case, and as the TPS is still wired in MS1, how do you guys deal with this part replacement when needed ? Do you have any suggestion please ?? Only things I found on the web are two aftermarket "products", which look the same though : 1°) E0467, TVR Throttle Potentiometer Rover V8 Pre-Serp and Serpentine Engine at RACETECH TVR Rover V8 throttle pot (replacement for the round and oval plug). Will fit Pre-Serp and Serp engines. Will also replace Land Rover part ETC8495 and ERR2263. https://www.racetechdirect.co.uk/car-parts/electrical/sensors-switches-and-control-units/e0467-tvr-car-part-tvr-throttle-potentiometer-rover-v8-pre-serp-and-serpentine-engine/ 2°) SP002 Rover V8 throttle pot upgrade kit at ACT PERFORMANCE PRODUCTS. Consists of: Colvern throttle pot, alloy adapter plate, Brass spidle, ball bearing, stainless cover plate, fixings & loom socket Once this kit is fitted, throttle pot replacements are cheap and easy using the colvern unit. http://www.actproducts.co.uk/product/sp002-rover-v8-throttle-pot-upgrade-kit/ What do you guys think about these ?? Anyone fitted one of these ?? The first one clearly states being a replacement for ERR2263. The second one is also sold buy Mark Adams, the 14CUX guru, on his tornado systems website, as an aftermarket replacement solution... If no other good solution from you clever gents, I would be really interested to have feedback on the above... Thank you for your attention Best regards from the other side of the world (New Caledonia) Erik. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 21, 2018 Share Posted April 21, 2018 Not fitted either, but they both look like good solutions! I tend to just buy second hand units of eBay, as long as the wires aren't broken they are normally in working order. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 23, 2018 Share Posted April 23, 2018 HOW MUCH MONEY??? For MS, almost ANY 3-wire throttle potentiometer from ANY car will work as long as you wire it so the voltage increases in the right direction. I'd have a scour of eBay / rummage in the local parts shop to see if there's something more generic that could be made to fit. Oh, and if you find one, let us know! Quote Link to comment Share on other sites More sharing options...
disconc Posted April 24, 2018 Author Share Posted April 24, 2018 Hi Bowie, Fridge, thanks again for your support. From what I have seen up to now on the net, as I do not have many choice around here at the local parts shop, It does not seem that easy to find something more generic to replace this TPS, and indeed, the options quoted above are quite expensive... Maybe then I should try second hand units on ebay... but they might be in the same state of "age" as the one I have. All I have found on ebay up to now was : => 1 "for parts or not working" at 80 GBP !!! => 1 used in the US for 122 GBP !!! => 1 brand new in the US for : 550 GBP !!! Considering this, the ACT solution for something new at 150 GBP finally does not seem that crazy. Anyhow, if anyone around has another solution, as stated by Mr Fridge, for something more generic that could be made to fit ... I (and I believe we) would definitely be interested... Thank you all Cheers Erik Quote Link to comment Share on other sites More sharing options...
steve200TDi Posted April 24, 2018 Share Posted April 24, 2018 Sometimes you can buy a plenum with one on for £50. Your original sensor and wiring could be strengthened up with some sealant if the wire sheathing has cracked maybe? I was going to try and make one of these fit, as it was only £10 ERR4278 https://www.ebay.co.uk/itm/THROTTLE-POSITION-SENSOR-FOR-LAND-ROVER-DISCOVERY-RANGE-ROVER-4-6-4-0-MFT6LR/263456744590?_trkparms=aid%3D555017%26algo%3DPL.CASSINI%26ao%3D1%26asc%3D20170912102056%26meid%3Dc0a352ea33e04fb59ff28798d9b78da3%26pid%3D100753%26rk%3D1%26rkt%3D1%26%26itm%3D263456744590&_trksid=p2045573.c100753.m4841 And i think people have done it of you search on google http://www.rangerovers.net/forum/8-range-rover-classic/14759-need-cheaper-cost-throttle-position-sensor-please.html Steve Quote Link to comment Share on other sites More sharing options...
disconc Posted April 25, 2018 Author Share Posted April 25, 2018 Hi Steve, thanks for your feedback... yes, that is the idea, trying to find an alternative potentiometer that could be modified to fit... I am wondering about the spindle which sticks out from the pot... I need to have a look at it, yet I do not have any dead one at hand... Any other feedback or experiment at fitting an alternative throttle pot welcome Thanks you Erik Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 25, 2018 Share Posted April 25, 2018 If it helps, the plenums are fairly interchangeable so you could use a D2/P38 plenum which has a nicer design of TPS. Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 25, 2018 Share Posted April 25, 2018 9 hours ago, FridgeFreezer said: If it helps, the plenums are fairly interchangeable so you could use a D2/P38 plenum which has a nicer design of TPS. And an idle air valve Quote Link to comment Share on other sites More sharing options...
disconc Posted April 26, 2018 Author Share Posted April 26, 2018 Hi Fridge, Elbekko, yes, I see the idea... clever, including the air valve... yet this is beyond what I am ready to tackle, as it would involve many other things like throttle linkage + kickdown cable, air tubing to the airbox, coil pack mounting (as on the 3.9 I am using Nige's bracket which uses the plenum screws).... Thanks anyway for the ideas, as it might help someone else one day working on a MS conversion... Erik Quote Link to comment Share on other sites More sharing options...
Jonwitts Posted April 26, 2018 Share Posted April 26, 2018 Hi Erik I've recently changed my TPS for the ACT conversion kit. My 3.9 has a megaSquirt and I was getting some strange engine behaviour beforehand as my old TPS was giving misleading info. With the new kit fitted I have a very stable idle and better pickup etc. I know its more ££ but at least it is sorted now. Jon Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 26, 2018 Share Posted April 26, 2018 13 hours ago, elbekko said: And an idle air valve A stepper-motor idle air valve, same as the hotwire, not driven by PWM. MS2 / MS3 can drive them but IMHO it's not worth the extra complication those systems bring. Quote Link to comment Share on other sites More sharing options...
disconc Posted April 27, 2018 Author Share Posted April 27, 2018 Hi Jon, thank you very much for your hands on real life feedback, this is very valuable ! Mr Fridge, I do not know what is used stock on these engines, but I saw a picture of a very clean PWM idle valve mounting on these manifolds below (thanks Nige ) Thanks again to everyone. Have a nice weekend Cheers Erik Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 27, 2018 Share Posted April 27, 2018 I meant the "old" style plenum (3.5, 3.9, early 4.0 & 4.6) not the later "bunch of bananas" type which is what Erik's picture above shows. Quote Link to comment Share on other sites More sharing options...
disconc Posted May 3, 2018 Author Share Posted May 3, 2018 Hi Fridge, sorry for my late, I was away up to now... Ok, I see what you mean, so you were talking about the plenum below, not the bunch of bananas... sorry, you know, here under the tropics, "bananas" are our kind of things !!! I have no way to have a look around this plenum, but as I understand from megasquirt-V8, you will have to make a few mods to it for the PWM valve to be added as it would be on a megasquirted "3.9 style". Thank you for your feedback Cheers Erik. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 3, 2018 Share Posted May 3, 2018 Megasquirt-v8 sell a small adapter which you attach to the back of the plenum, you have to drill & tap holes for it: Although you could equally make something with a hydraulic fitting or similar. Or you could use one of the blanked holes in the plenum base which are present on some V8's (not on the 4.6 one), like the 3.9: My full conversion is here: Quote Link to comment Share on other sites More sharing options...
disconc Posted May 4, 2018 Author Share Posted May 4, 2018 Hi Fridge, okay, thank you so much for all this wealth of information and feedback. Cheers Erik. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 4, 2018 Share Posted May 4, 2018 No problem. BTW the reason I drilled + tapped the holes is I didn't want the risk of a nut coming loose inside the plenum. Quote Link to comment Share on other sites More sharing options...
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