Wierd thing that happens

bigtim · #1 30-01-2007, 21:51

dump valve maybe

umpkin · #2 30-01-2007, 22:01

cant see why that would make a difference at what speed im doing??? it idles fine anything below 60mph and my DV is a baily twin piston gp1.

PukkaSilvia · #3 30-01-2007, 22:04

Ive had this on my et and det. Have you got any exhasut blows or as tim says a dump valve fitted. Sometimes a faulty or wrong specced dump valve can cause the problem.

Give the old girl a good old service mate and check sensor plug contacts, boost hoses are all good and tight ,Also listen for hissing around the inlet at idle too(vaccum leak)

adzs12 · #4 30-01-2007, 22:19

Sounds to me like a vacuum leak.

30psi · #5 30-01-2007, 23:41

Throttle position sensor.

umpkin · #6 31-01-2007, 16:11

but all those would also make it not idle when at a junction, in normal driving it idles fine, its ONLY when the car is moving at more than 60+mph and i slip it into neutral. the only think i can think of is the amount of air being pushed into the front of the car at speed is forcing to air into the intake.