pugpaul 1 Posted July 1, 2007 Hi all! Its been a long time since i was last on due to having another car...a non Pug....i know i have sinned I have now bought a 205 1.6 GTI ph2 in Miami blue. I bought it off a chap who had replaced the head with a 1.9 one due to the head gasket going on the original 1.6. Anyway since having my Pug the idling is terrible. I have changed dizzy cap, rotor arm, HT leads, Bosch Super 4 plugs. I have also cleaned out the throttle body with carb cleaner. I used all 1.9 stuff as it has a 1.9 head, thought this would be ok. After 1 week of fitting my plugs i checked them to see any signs of wear. The probes on all 4 of the plugs are black, kind of like a deep black soot, the plugs have covered about 70 miles in the week. The car was originallly pinking....after taking an 11mm spanner with me and stoping every 10 mins i have cured the pinking! Now my car is staling when cold, takes about 5-10 mins to warm up then the low speed ride is terrible, very bad jerking so having to ride the clutch at low speeds. Under heavy acceleration she is fine, pulls very well through all gears.....any ideas on my troubles? A couple of mods that may cause some troubles??.... K&N induction and a full stainless stell exhaust including the manifold. Share this post Link to post Share on other sites
choco 0 Posted July 1, 2007 Did you check your CTS? Cheers, Johnny Share this post Link to post Share on other sites
danpug 1 Posted July 1, 2007 Possibly an afm issue? Sounds like your sad isnt working either, i've got a couple if you need one. Good to see you back, im sure somebody mentioned you vanishing a while back! Share this post Link to post Share on other sites
Doof 11 Posted July 1, 2007 Mines exactly the same as you describe. I've tried everything apart from a new AFM. I tried retracking it but there was no difference. Share this post Link to post Share on other sites
pugpaul 1 Posted July 1, 2007 Thanks for quick replys What is a CTS? Hello Dan, how are you mate? If you have a spare SAD i will buy it from you chap Share this post Link to post Share on other sites
DamirGTI 342 Posted July 1, 2007 Hi all! Its been a long time since i was last on due to having another car...a non Pug....i know i have sinned I have now bought a 205 1.6 GTI ph2 in Miami blue. I bought it off a chap who had replaced the head with a 1.9 one due to the head gasket going on the original 1.6. Anyway since having my Pug the idling is terrible. I have changed dizzy cap, rotor arm, HT leads, Bosch Super 4 plugs. I have also cleaned out the throttle body with carb cleaner. I used all 1.9 stuff as it has a 1.9 head, thought this would be ok. After 1 week of fitting my plugs i checked them to see any signs of wear. The probes on all 4 of the plugs are black, kind of like a deep black soot, the plugs have covered about 70 miles in the week. The car was originallly pinking....after taking an 11mm spanner with me and stoping every 10 mins i have cured the pinking! Now my car is staling when cold, takes about 5-10 mins to warm up then the low speed ride is terrible, very bad jerking so having to ride the clutch at low speeds. Under heavy acceleration she is fine, pulls very well through all gears.....any ideas on my troubles? A couple of mods that may cause some troubles??.... K&N induction and a full stainless stell exhaust including the manifold. Hi ! If your plugs are black-sooty then the air-fuel mixture is too rich (indicates as sooty deposits on the spark plugs) did you try to unscrew the mixture nut on the AFM ? you may have too rich mixture on idle but good mixture on the rest of the rev range As for cold starts check if your SAD is working .. Anyway me to have problems with idle and no matter what i do (cleaning everything with carb cleaner , replacing breather pipes , replacement AFM , changing-adjusting TP-sensor , adjusting throttle initial position ... i replace a full bag of various things but with no luck ) it's allways the same - i never had a steady idle , it's sometimes stays at 1000 then sometimes swings from 1000 to 900-800-600 and back , sometimes it's at 1200rmp. etc. so you are not alone with this And on more thing , i found that my car goes very bad when i fit K&N induction kit - it misfires a little exhaust was surging and popping on over-run engine dosn't want to pull so strong bad idle speed and most important air/fuel mixture suddenly drops down, was a bit lean with K&N filter (i've check that with an lambda sensor , first with OE filter element and after that with a K&N induction kit and i was like this - strange ... , so i remove that K&N tingy fit OE element back and everythig was back as normal..) cheers Damir Share this post Link to post Share on other sites
lee-bg 0 Posted July 1, 2007 i think everything comes from that bloody AFM device its old and used too much...besides fitting K&N it sucks much more air than it can measure (my theory) so car couldnt know and doesnt provide the more/fuel from injectors. thats why it runs lean. Also i believe with me the bad idle is from the AFM. Fitting a new one helped a bit, but still not satisfactory. Share this post Link to post Share on other sites
DamirGTI 342 Posted July 1, 2007 Hi ! Maybe but i've try 3 different AFM-s and i never had a stable idle speed must try with new battery tomorow and see if that helps in some way .. Anyway i'm shure that this is something about electrics - current drawning stuf or something like that , like the ECU looses a bit power when the car at idle with lights and (or) colling fan working , or because of bad-old wires , not enough voltage fed to ECU at idle etc. cheers Damir Share this post Link to post Share on other sites
pugpaul 1 Posted July 1, 2007 Hi Damir I took the idle screw out to give it a clean then screwed it back in until the revs showed 900-1000....i think i must have upset the fuel/air mixture, thing is if i turn it down anymore it stalls!? I have been messing about with the distributer as when i bought the car she was pinking so cured that by retarding it. I also need to find out if the SAD is working, dont know how but will do a search in a mo' on the SAD. Paul Share this post Link to post Share on other sites
brianthemagical 1 Posted July 1, 2007 ^^^^your talking about the idle speed screw, on the TB. the mixture screw is on the afm, bottom laft on the top when it's in situ. it has a hex head. Share this post Link to post Share on other sites
pug_ham 244 3 Cars Posted July 2, 2007 What is a CTS? Coolant temp sensor for the ecu, nothing to do with the coolant temperature guage though Graham.. Share this post Link to post Share on other sites
pugpaul 1 Posted July 2, 2007 Coolant temp sensor for the ecu, nothing to do with the coolant temperature guage though Graham.. Interesting as my car runs hot....i mean 3/4 when driving and more when in traffic. The fan does not kick in so i have wired a switch to turn it on, not the best i know but it does the job for the mo'! Share this post Link to post Share on other sites
Grim.Badger 15 Posted July 2, 2007 The later 1.6s, like yours, and the 1.9 have the same head except the 1.9 has a slightly wilder cam. I don't think the parts you mentioned are any different between the models but as your engine is still a 1.6 you should use 1.6 items. As for the coolant fan and CTS etc: The GTi effectively has four coolant temperature sensors. 1: Coolant Temperature Guage Sensor - usually at the back of the head to the left of the dizzy, this control the temp guage on the dash. 2: Coolant warning light sensor - usually at the back of the head to the left of the dizzy, this controls the excessive coolant temp light and STOP light. 3: Fan Thermo Swtich - Always attached to the radiator and activates the cooling fan when the temperature gets too high. 4: ECU temperature sensor - Can be in a variety of places in the general area of the dizzy, but is easily identified by having a blue plastic cap; the ecu uses this sensor to judge the engine temperatue and therefore how much fuel to inject, if this is diconnected or broken the car will idle very badly and stall as it thinks its about -30c degrees and injects loads of fuel. You will be lucky if you can get a steady idle below 1200rpm, and even then these cars run a little rough, mostly due to the age of the wiring afaik. I would get the fueling adjusted by a garage you trust as they will be able to stick a emssion tester up the exhaust whilst they play about with the mixture screw. If your cold idle is similar to your hot idle then you SAD is likely to be working. Warm idling can be difficult to sort though. Share this post Link to post Share on other sites
danpug 1 Posted July 2, 2007 I was having the same probs with idle you describe on my old mi16. I fiddled with the afm but to no avail, sometimes you would think it was sorted then i'd take it for a drive and it would idle at 1500-2000 rpm!! I bought a good afm off someone on here and it solved the problem, and gave me loads of extra mpg too. If you find you need an SAD drop me a pm. Share this post Link to post Share on other sites
pugpaul 1 Posted July 4, 2007 Problem cured Had my Pug setup at 205parts in Leicester. Fantastic guys who spent a good hour checking everything. They fitted a new TPS sensor.....runs perfectly now They have a site which is www.205parts.com Really recomend these guys. Share this post Link to post Share on other sites
