Sorry to beat a dead horse but my car doesnt seem to want to accept a timing advance. After warming up, I start the car with the TPS off, rev it 3 times, and then adjusted the timing. Ok no problem its sitting right on the 15 mark. I shut the car off, reconnect TPS, and restart car. I check the timing and doh its back around 10. If I shut the car off and disconnect the TPS again it still shows 15. Whats goin on here? It seems like the car wont go into timing mode. What do I have to do to make my changes stick? Thanks in advance to anyone who can help me with this.
Ah yeah, I asked this same thing like 2 weeks ago, and no one seemed to know that answer; even had pictures and crap posted up but no one knew what to do. Hope you get the fix so I can do it myself
Well I went and looked up your post and I think our two problems are not the same. In my case I see the marks just fine with the TPS connected but the problem is it stays at stockish settings. Im convinced that either my car wont go into timing mode or the ECU just doesnt like the advance for some reason.
The only thing I can think that I may do wrong is the revving part. I have no tach and no way to measure RPM. Maybe Im revving it too much or not enough. How critical is it to make sure you rev at 2-3k rpms? And without some kind of tach how can I be sure Im there?
I thought the problem seems rather similar, although mine won't even tell me what the timing is at now, it still seems like its stock, as though my ECU were making corrections on its own. I thought I wasn't getting in car into timing mode, so I revved my car way past 3k, and up to 4k and 5k, and well, nothing ever changes.
Well I just went out and messed with it some more and still no luck. Im wondering if maybe I have a phantom trouble code stored in the ECU. I dont have a CEL on but I know some codes wont illuminate it. Ill be going to work soon so itll have to wait till tomorrow. If anyone else has some suggestions please let me know.
Make sure the car is in closed loop mode.....that is warmed up sufficiently before doing timing or idle adjustment. I also don't believe once your timing is set and the tps is hooked back up that base idle timing will show the 15* that you had it set for, but the base should stay as you set it. also make sure your engine fans are unplugged as they change idle rpm if they switch on.
Okay, you ran the car for a while, right? Now before you shut the car off just rev it past 3k rpms for the hell of it, and also shut off the fans, radio, whatever. Now disconnect the 2 tps sensor connectors. Yes there are 2 connectors and that is where you could of gone wrong. Now start the car back up and rev it past the 3 k three times and rotate the distributor to achieve the 15 degree mark. Shut off car and verify that it has not changed, it won't.
Sorry to beat a dead horse but my car doesnt seem to want to accept a timing advance. After warming up, I start the car with the TPS off, rev it 3 times, and then adjusted the timing. Ok no problem its sitting right on the 15 mark. I shut the car off, reconnect TPS, and restart car. I check the timing and doh its back around 10. If I shut the car off and disconnect the TPS again it still shows 15. Whats goin on here? It seems like the car wont go into timing mode. What do I have to do to make my changes stick? Thanks in advance to anyone who can help me with this.
don't worry man, when you plug in the TPS sensor and turn it back on it won't show 15. my car does that too.
Oh My God. Are you kidding me? Thats the answer I needed really James! I thought it was suppose to say that its at 15 degree still after you hook everything up and check the timing. Now I know, and this whole time I thought I messed up somewhere and have redone it like 20 times with no such results. Well alright, I have 1-2 more hp than before, those Civics better be scared
the normal behavior is when the TPS is plugged back in , when you check the timing the needle should be point in the general area of the degree setting .. it only goes to the exact reading in timing mode
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B14 200sx: GA16DE at 15º BTDC + HS CAI + stromung cat-back + UR crank pulley + JWT S1 Cams
Cosmetics: SE-R wheels & skirts + Stillen Lip + CrystalClear Headlights & Corners + 98 Sentra Grill
Suspension: Tein Basic's + Front & Rear Strut Bar
Ok I dont want to doubt you guys too much but are you telling me that even though the timing gun is telling me I have around 11 degree timing (with the TPS in), my car will actually operate at the 15 degree that I see with the TPS off? I certainly dont understand it but if you guys all say its normal I guess Ill just have to accept it. Ahh hell and even if it is 11 I guess its still a few degrees better than the 8 I started with. Im still gonna try clearing the ECU though. Didnt get a chance to today but I will tomorrow and try adjusting it again.
did you ever try checking the timing before you did the advance ... when it was at the stock 8deg? when i check my car when it was at the stock setting it would fluctuate around 8deg +/- 2deg. , but when i unplugged the TPS it would stay at 8deg dead on.. I thought this was weird so i checked with other cars ... a honda accord , and my 2 other nissans .. and it was the same case with theirs also.
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B14 200sx: GA16DE at 15º BTDC + HS CAI + stromung cat-back + UR crank pulley + JWT S1 Cams
Cosmetics: SE-R wheels & skirts + Stillen Lip + CrystalClear Headlights & Corners + 98 Sentra Grill
Suspension: Tein Basic's + Front & Rear Strut Bar
Ok I dont want to doubt you guys too much but are you telling me that even though the timing gun is telling me I have around 11 degree timing (with the TPS in), my car will actually operate at the 15 degree that I see with the TPS off? I certainly dont understand it but if you guys all say its normal I guess Ill just have to accept it. Ahh hell and even if it is 11 I guess its still a few degrees better than the 8 I started with. Im still gonna try clearing the ECU though. Didnt get a chance to today but I will tomorrow and try adjusting it again.
its not stationary... the VTC retards it at idle, the fans can change it when they come on, any electrical load can change it... its your base timing your changing so as long as you follow the procedures you will be ok.
its not stationary... the VTC retards it at idle, the fans can change it when they come on, any electrical load can change it... its your base timing your changing so as long as you follow the procedures you will be ok.
Aha! That makes sense. Thanks for the info. I think you saved me from hours of scratching my head and tinkering with it.
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