poor idle

[lee07]

ok i have just replaced the throttle body on my mk4 golf 1.4 16v e 1998 now runs alot better,but if i rev it just a little it wil hunt but if i rev it up to 2k it is ok? anyone any ideas? also if i hold the revs at 2k it wil sound like it is missfiring like popping? also now and again my temp sensor stops working but then it wil work then stop again could this be the problem?can anyone help please thankyou

[andrew.butler57]

coolant temp being irratic will definatly not help your situation, probably a new sensor required there, as for your other faults, when throttle bodys are fitted they need to have there basic setting adapted usually by the vw diagnostics machine or a vag-com will do it, this will allow the engine control unit to know where it's idle is!!!

[lee07]

ok thanks i will get a new temp sensor,as for vag com i have just downloaded 704 from ross tech but dont have a cable as of yet,will this fix my problem?

[mobitune]

Your new temp sensor could well cure the problem.

[Crasher]

When you get your VAG-COM cable (it will need to be a registered version) you need to read for faults, deal with them and clear the codes. Then when there are no codes stored, get the engine hot. Turn off and turn the ignition back on. Go into adaptation 10 and group 00, read and save and click "yes" when given the option. Come back out of adaptation and go into basic settings 04, sub group 098 and wait whilst the throttle body is adapted and the fourth block in the display says “ADP OK”. Exit basic settings after at least 15 seconds, exit engine group and turn the ignition off for 15 seconds.

[lee07]

ok thanks just bought a cable of ebay will this do the job??

[Crasher]

Doubt it, those cables usually won't let you into Basic settings 04 and adaptation 10.

[lee07]

ah dammit im readin all kinds of things off the internet saying they work etc

[Crasher]

Why don't you buy an approved cable? After all, Ross Tec won't keep developing the software for free if no one buys their cables.

[Sloggs]

ok thanks i will get a new temp sensor,as for vag com i have just downloaded 704 from ross tech but dont have a cable as of yet,will this fix my problem?

Just wondering if you got the new temp sensor & if it worked or not? I'm having similar problems, only idles erratically when the engine is warm, cleaned throttle body too.