Mk1 gti cabrio won't rev properly over 4000 rpm
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Dx engine
help please!
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91Jreg Sportline (now gone) For now 88 Ereg Mk2 16v (monza blue ) (now its gone too)Numerous mk1 tintops I should never have sold 😰 Oh and a TDI Touran as a daily ….latest toy mk5 Gti (showing my age) had to go serious money pit ,now cruising a Caddy Van
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Local Hero
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1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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MOTY 2013
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as a short term test swap the 17/18 relay to the fuel pump slot, if car runs faultlessly and rev counter reeds fine you need a fuel relay. if not check the spark system as above
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
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Local Hero
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If not a VW one try putting the relay below 17 or 18 in place of the fuel pump relay and try that, just because it's a new relay does not mean it works as the cheaper ones from GSF, ebay etc sell seem very poor quality.
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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Local Hero
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Fingers crossed it's an easy fix of just replacing the relay.
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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euro car parts replaced the relay for another one today,drove it tonight with the new relay and the problems back again!!the make of the relay is KAE , made in Germany,is this one of the makes you say are poor quality?what are your thoughts please?thanks
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MOTY 2013
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have a good look at the relay socket too, the smaller spade terminal for the rev trigger may be a bit grotty or loose
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
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My original "D" suffix fuel pump relay stopped energising and switching (fuel pump would work when I used my finger to actuate switch) so I knew I needed a new relay. I think it was the original as built part amazingly and lasted 40 years! Vw branding but manufactured by Siemens. Anyway…
I bought an Automega replacement relay listed as being suffix "F" type but it came without anything printed on it so tried it and it made the fuel pump work so thought that was job done.
Some weeks/months later when back on the road and MOTd I noticed it wouldn't rev past 4000rpm so started worrying about all sorts and checked fuel tank for crud (clean!) and all lines for kinks/leaks (none), replaced fuel filter with Bosch quality and cleaned all the airbox, meter flap, throttle etc and then started searching on here and re checked the relay and noticed that the small pin was labelled 1 rather than 31b like the old one. So I wasn't sent an "F".
Bought a new VAG branded replacement "F" type and resolved the problem! Happy days.
Thanks again for the expert forum resource and those posting!
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