HELP!! timing advance question
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HELP ME!!!
Guys I need some help here. Here is the situation. I have a 1992 SC300 turbo, I have a 93 Maf, 93 ecu, and greddy emanage with all optional harnesses (ignition, injector...) (If you need more info on the setup i have to help better the situation, just let me know, and I'll post it) The Iginition harness is not hooked up. This is because we are unsure of which wire to splice the harness into. So during this process of hooking up the ignition harness, my shop decides to check out my timing. They find that my timing reads 40 degrees advanced....
Now im not the smartest guy when it comes to cars, but I know thats pretty off. They say that they have checked out all the possible reasons that it could be off, but I need your inputs.
Could it be that since I swapped in a 93 ECU and 93 MAF into my 92 car that would cause problems? We are going to swap in the 92 ecu and 92 maf and see if we get the same problem.
So, What else can we check to find out why my timing is sooo far advanced?! How can we fix it, if im not mistaken, being 40 degrees advanced should make the car run like crap, and ping at high boost levels? correct?
Just when i think the car is ready to come out, this happens...
Kevin
Guys I need some help here. Here is the situation. I have a 1992 SC300 turbo, I have a 93 Maf, 93 ecu, and greddy emanage with all optional harnesses (ignition, injector...) (If you need more info on the setup i have to help better the situation, just let me know, and I'll post it) The Iginition harness is not hooked up. This is because we are unsure of which wire to splice the harness into. So during this process of hooking up the ignition harness, my shop decides to check out my timing. They find that my timing reads 40 degrees advanced....
![EEK!](https://www.clublexus.com/forums/images/smilies/eek.gif)
![EEK!](https://www.clublexus.com/forums/images/smilies/eek.gif)
Could it be that since I swapped in a 93 ECU and 93 MAF into my 92 car that would cause problems? We are going to swap in the 92 ecu and 92 maf and see if we get the same problem.
So, What else can we check to find out why my timing is sooo far advanced?! How can we fix it, if im not mistaken, being 40 degrees advanced should make the car run like crap, and ping at high boost levels? correct?
Just when i think the car is ready to come out, this happens...
![Egads!](https://www.clublexus.com/forums/images/smilies/pat.gif)
Kevin
Last edited by lexcoupe; 03-04-04 at 05:17 PM.
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could it be that when they put my cams back in they are a little off? is that a possibilty? because the car runs perfectly at 40 degress advanced, and when they try to put it back to around 15 or so it doesnt even run.
Also when they rotate the distributor to see if its off, the car doesnt start either.
So do i have a problem being 40 degrees advanced if the car runs perfect....?
HELP
Kevin
Also when they rotate the distributor to see if its off, the car doesnt start either.
So do i have a problem being 40 degrees advanced if the car runs perfect....?
HELP
Kevin
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How/where did they measure the timing? Was it using a timing light or from the ECU? The timing light is the TRUE measure of where your ignition is and the ECU needs to be synced to this.
Hope this helps...
Hope this helps...
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#9
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Put your #1 cynlinder to TDC and the distributor line it up in time. From here you can go ahead advance or retard timing. Tell them to get a lexus service manual.
JPI
JPI
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Thanks for all the replys guys,
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
I really have no clue whats going on with the timing, We are still looking into whats wrong with it. I hope we can really find out whats wrong with it.
Kevin
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
I really have no clue whats going on with the timing, We are still looking into whats wrong with it. I hope we can really find out whats wrong with it.
Kevin
#11
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Originally posted by lexcoupe
Thanks for all the replys guys,
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
I really have no clue whats going on with the timing, We are still looking into whats wrong with it. I hope we can really find out whats wrong with it.
Kevin
Thanks for all the replys guys,
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
I really have no clue whats going on with the timing, We are still looking into whats wrong with it. I hope we can really find out whats wrong with it.
Kevin
JPI
#12
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Originally posted by lexcoupe
Thanks for all the replys guys,
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
Thanks for all the replys guys,
BUT, wmulli, they use the timing light.
Bean, It was measured off of cylinder 1
JPI, Have the manual, and i think they have already done this
I really have no clue whats going on with the timing, We are still looking into whats wrong with it. I hope we can really find out whats wrong with it.
Setting the timing to where you want from there is where it starts to get interesting
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Kevin
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Ok, I will let them know what they should be doing if they are not doing this already. Ya they are familiar with toyota cars. When I asked them how they can fix it they said that when they turn the timing back, or mess with the distributor, the car wont even start. So maybe they are not changing it all back to TDC. But they are closed tomorrow and monday anyways. But thanks for all the help.
Kevin
Kevin
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Ok, I'll post one more time, but I'm convinced my last post got deleted.
Bare with me, this is an example from the Honda world.
We have a "Service Connector" that we jump to flash CELs and to prevent the ECU from advancing timing. This is used when setting the timing. If you do not jumper this connector, it's very common to see 40 degrees advance, under no-load.
I've seen these symptoms before, if I had a Lexus service manual (or car for that matter) I'd try and do some research and see if there was an equivalent procedure when doing timing. Theoretically I would imagine this is conceptually valid for any car with electronically advanced distributor timing...
Best wished getting this sorted.
-PHiZ
Bare with me, this is an example from the Honda world.
We have a "Service Connector" that we jump to flash CELs and to prevent the ECU from advancing timing. This is used when setting the timing. If you do not jumper this connector, it's very common to see 40 degrees advance, under no-load.
I've seen these symptoms before, if I had a Lexus service manual (or car for that matter) I'd try and do some research and see if there was an equivalent procedure when doing timing. Theoretically I would imagine this is conceptually valid for any car with electronically advanced distributor timing...
Best wished getting this sorted.
-PHiZ