the 2.0 im shaft fit into my block but the matching big gear wouldn't fit in the smaller hole on the block that mates with the oil pump so i still don't understand whats going on with this, but if i pass smog i won't care :)
unless i am missing something all i see for timing this car is to heat it up with a fan cycle and go. no disconnecting the cts or revving like some others??? i don't have any vacuum line on my ecu either. bently has a blurb that distributor bearings might be messed up if timing wanders, ugh. maybe i had the bolts too loose i will go out and try and tighten them and see. i see no engine light in my cluster either and the last smog guy i went to was asking me where it was!!! its a non california car and i won't be going back to that guy. On Thursday, March 24, 2016 at 5:52:49 PM UTC-7, hollandphillips wrote: > > Two knock sensors means 2.0/9A block. > On the timing issue, there is something that needs to be disconnected > prior to using a timing light. I can't remember what exactly it is, but I > think it's a vacuum line somewhere. Again, that information is in the > Bentley. Once the whatever is disconnected, the timing should be steady > when viewed with the timing light. > The timing advance on Motronic cars is controlled by the ECU, which is why > initial setting of the timing requires disconnecting whatever it is the > Bentley tells you. They do connect a timing sensor to the number one > cylinder spark plug lead when running an emissions test in California. > Don't know if it's just for reference to the machine, or if they can > actually fail you if it's out of spec. > > ~Holland > On Mar 24, 2016 17:04, "damac2004" <[email protected] <javascript:>> > wrote: > > ok so ground showed no continuity to that sensor wire. it does with pin 7 > i believe on the ecu connector, so i guess i am good. i kept getting > confused because people were talking about an insulated wire and im > thinking a nasty cable like for tv. when looking these guys over as is, > they don't seem special looking to me. > > also i looked over the car again and i do have 2 knock sensors. they are > on the front of the block close to each, closer to cylinder #1. they each > attach to a harness connector that goes into the loom and to the ecu. so > if i remember right people said 1.8 blocks don't have 2? yet i couldn't > fit the larger im shaft gear into this block that mates to the oil pump it > had the smaller block off plate hole? so still not sure what i have. in > included a picture down below. hopefully i won't need to care. > > here is a link to video of my first cold startup. for some reason it > took like 5 times to start like there was no gas, fuel pump was making > noise. then it started right up. can anybody tell if it sounds ok? i am > now having an issue with timing the car. i tried cold and after a warmup > cycle and i cannot get the pointer to stay still with the light on? it > kind of lines up with the diamond and then it will shoot off a little bit > off one way or the other. if i go further either way from where it is now, > when it shoots off it tends to go in that direction more. i tried > connecting the lead near the distributor cap and at the head. it seems to > like this spot the best but im not sure how accurate it is. im wondering > what impact this could have on smog if im a little off. also not sure if > this means my car is having troubles or if my timing light is messed up. > > https://www.youtube.com/watch?v=GB9yXn61pS8 > > > <https://lh3.googleusercontent.com/-ld5z8T1qMBU/VvSAHUYZQFI/AAAAAAAAAOw/TN6T8t9LDnYh-Ek6Nwhyij9PhtpIeLAEQ/s1600/IMG_0583.JPG> > > > > > On Thursday, March 24, 2016 at 10:32:11 AM UTC-7, stevenarguello wrote: > > I think that your loom is good, I wouldn’t mess with it anymore. The > Bentley shows a circle around the signal wire where that ground meets the > O2 signal wire instead of a splice and that’s what you have. Maybe check > to be sure that there’s no continuity between the ground and the O2 signal > spade connector. > > > On Mar 24, 2016, at 10:48 AM, Holland Phillips <[email protected]> > wrote: > > The Motronic ECU does store codes. Since the OBD1 spec didn't go into > effect until '95, code readers don't work on these cars. Connecting two > leads to the proper positions of the connectors under the shifter boot and > connecting a momentary switch to the other ends of the two leads, by using > the switch to short the leads for a few seconds, the codes are shown by the > check engine light flashing in various sequences. The Bentley explains all > this and has a chart showing what the various codes indicate. I don't > remember exactly where in the Bentley this procedure is, but it's in there > somewhere. > > ~Holland > On Mar 24, 2016 1:17 AM, "damac2004" <[email protected]> wrote: > > sorry just to make sure we are on the same page. you are saying the 02 > sensor black connector is going into the loom to the ecu. and the ground > wire attached to the firewall is loose and surrounding the 02 sensor wire > along the same path? i am paranoid and want to see for myself and am > tempted to cut further upstream to see. > > i thought i read about the codes and bought a cord on ebay to convert from > a little plug underneath the shifter boot i believe that goes to an obd > reader? i will try it if i read right after i get the sucker going, had to > rewire the main power and grounds. many wires have fallen to pieces just > from touching them. scary stuff now that i look closer. > > On Thursday, March 24, 2016 at 12:40:03 AM UTC-7, stevenarguello wrote: > > The picture looks just like what I thought it would, the signal wire is > the one with the connector, the one going to the ground is the shield. I > think that you're good to go. > I would have shown you my loom, but it's very different and I thought it'd > make things more confusing. > > Fire it up. > > One last thing, I'm pretty sure that your Motronic ecu has codes. I'm not > sure how easy they are to read or if they help at all. > > On Mar 24, 2016, at 1:29 AM, damac2004 <[email protected]> wrote: > > > > i forgot to add this picture. maybe i need to look closer but it looked > like the connector wire is exposed and touching that main ground leg. is > it possible the connector has its own cover and is running inside inside > the ground run? i can try and cut some back and look at it. i was > expecting a special looking wire, my connector wire doesn't look special? > > > i don't really understand how to read the bently. this is the only wire i > see connected in the 20 pages to the firewall ground on that side. it > doesn't show a straight run to the control unit but it has a solid line > crossing into the shielded wire icon on the 02 sensor connected leg. i > just assumed they were connected or else the ground wire from firewall side > would go nowhere? > > > is this a pretty common harness on other gas vw's of the same era? i wish > i could see somebodies stock harness with pictures, maybe i can find one at > picknpull. > > > > <https://lh3.googleusercontent.com/-oSf6Tvpz5Xg/VvN7QYR455I/AAAAAAAAAOU/FVftHFgDN0AaCg98N1jFVFSj67xKPaOjw/s1600/IMG_0575.JPG> > > > > On Wednesday, March 23, 2016 at 5:21:42 PM UTC-7, stevenarguello wrote: > > So you bought a new 3wire O2 sensor? If so, the black is the signal not > the ground. (The sensor is grounded through the exhaust?) > After the orange connector the signal wire back to the ecu is a little > thicker because it's a coaxial cable, it has a braided shield around the > signal wire. This shield has a ground and I believe that's the one going to > the firewall. That's why they look like 2 wires fused into 1. > (I think, my loom is different.) If I'm way off, I hope someone will let > him and me know. > > There should be an extra female connector for the 2nd knock sensor, unless > they cut it off. > > > On Mar 23, 2016, at 6:30 PM, damac2004 <[email protected]> wrote: > > hate to bug people but i'm just tidying things up with a new 02 sensor and > want to make sure before i start it up and time it. i pulled the whole > harness that goes to the ecu just to make sure. i do only have the 1 knock > sensor. don't see any special shielded wiring. > > the 02 harness side has a black ground going to firewall that goes to the > ecu. a small area is cleanly exposing wires and the 02 sensor signal wire > connector is fused to this ground leg. no sign of solder or cuts, looks > original to me? > > i also tried looking up my car in the bently and it matches a later gti 91 > chasis according to them. it shows the ground location over there on > firewall rather than the engine block. > > i have the 2 white wires from 02 sensor going to stock connectors and > their colored wires into the ecu harness. > > bently shows the ground leg black wire and the 02 sensor connector black > wire making a left turn into that black ground wire. > > so it seems it is wired correctly? > > i just don't understand how 02 sensors work, not sure if that black wire > is a ground wire on all car applications. > > On Saturday, March 19, 2016 at 1:24:08 PM UTC-7, stevenarguello wrote: > > The wire you’re touching looks like the O2 signal. In your case it looks > like the shield might have been pulled off and ran to ground. (That’s a > guess, could be like that from the factory) The red and yellowish (sorry, > I’m a little color blind) are the O2 heater. The 2 whites and the lead with > the electrical tape go to the sensor. > I think. > > There’s only one mounting point for a knock sensor on the 1.8, the 2.0 has > 2. If you have 2 and they’re both mounted to the block then I’d say that > the block is 2.0. I know we’ve gone back and forth on this, but I had the > exact opposite happen to me my ’88 had a 2.0 (the PO didn’t know) I found > out when I discovered the second KS. > > On Mar 19, 2016, at 3:20 PM, Holland Phillips <[email protected]> > wrote: > > As Steve mentioned, the O2 sensor signal wire is shielded, similar to a > coaxial cable. It's basically a regular insulated braided copper wire of > about 20 gauge, with a braided shield covering it. > > ~Holland > On Mar 19, 2016 12:13, "damac2004" <[email protected]> wrote: > > im pretty sure i have 2 knock sensors? im attaching a picture of what i > uncovered from electrical tape. looks like a brown wire covered with black > that goes to top connector from drivers side, its duct taped along i guess > stock loom. i assumed ground at first but wonder if this could be the 02 > sensor signal wire? > > and just what i thought. i have a black ground wire coming from firewall > gong to the loom. but an area is all cut away with exposed wiring. the > wire from outside of loom was wrapped into this exposed ground bundle WITH > the 02 sensor signal wire??? > > this is incorrect right? ground wire is no the same as signal wire for 02 > sensor it should make an isolated run somewhere? > > whats wierd is all the wires but the loose one outside of loom seem to be > fused together. i can't detect solder and the wires seem to be attached > firmly inside the black cover. i can't even pull them apart, i would have > to cut which makes me think it was stock because i don't see breaks further > down the line. > > > <https://lh3.googleusercontent.com/-dxq5cmIRnac/Vu2jZVj8m9I/AAAAAAAAAN0/6KQ2liGE3owz3akNdZZU2l2Z-LO6_usig/s1600/IMG_0571.JPG> > > ... -- You received this message because you are subscribed to the Google Groups "MK2-16v" group. 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