GSI holding revs at idle????

[b943weg]

My gsi has started 'holding onto its revs'. Idle returns to below 1000 rpm, but sometime this takes 3 secs, sometimes 30 secs. It does it while driving, acting a bit like cruise control at 2,000 rpm:confused:.

Any ideas?

[mowgli]

icv, sticking afm flap, possible air leak on vac pipes, cts

[b943weg]

Hello Mowgli,
whats the 'cts', and wheres the ICV hidden. Vac pipes seem good, but could do with replacing due to age. Do you live in Hinckley? I live in E/Shilton

[7ova]

is it a gsi with a E16se or C16se engine fitted?
the inlet manifolds arent the same and C16se
doesnt have a air flow meter.

could be the idle air control valve
or a air leak on or around the inlet manifold?

[b943weg]

I've been meaning to ask...how to I know if I've got an E16 or C16 engine? Wheres the IAC valve on these engines? Looks rather different under the bonnet to the 16v ecotecs I used to tinker with!

[7ova]

has it got its original 1.6 8 valve engine?
what plate or year is it?

gsi's with a E16se engine were approx H reg to K reg, 1990 to 1992
and gsi's with a C16se engine were approx K reg to L reg, 1992 to 1993

the E16se has a dizzy and a large air flow meter on the air box
and the C16se has a coil pack and NO air flow meter on the air box

hope this helps
stu

[bazil]

This is the E16

Note it has the Bosch AFM on the airbox and dizzy with coil.

http://i790.photobucket.com/albums/yy181/Bazil_2468/a21.jpg

[b943weg]

Its an E16 then. Its a 1991 with the original 1.6 8valver

[b943weg]

Wheres the IAC hidden on the E16 engine?
Mines hasn't got 2 brake fluid reservoirs like the pic above either?

[GRUNT 16V]

To adjust the idle speed on the e16se there is a screw on the throttle body
the e16se doesnt have a iac valve as such

[mowgli]

the CTS is the coolant temp sensor for the ecu, its usually under the dizzy. The icv is bolted to the cam carrier & has 2 rubber hoses & a block connector going to it. The haynes shows how to test it.

Yes i live in hinckley, just off the cov rd.

[b943weg]

Thanks for the info Mowgli. I only live in Earl Shilton. PM me if you want to catch up for some Nova chat. I tried to send you a PM, but it wouldn't let me 'cos of a full mailbox or something??!