Can anyone help, please? Timing issue. .

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Can anyone help, please? Timing issue. .

Postby FC Zach » Thu Jul 09, 2020 7:49 pm

Does anyone know and can tell me what the ignition timing is at idle without bridging terminals E1 & TE1? It might sound like an odd question but when I bridge those two terminals there's no audible change in idle or timing so I'm setting the ignition timing blindly and it's way off, so off that it's barely drivable. . . This is my daily driver so I'd like to get it sorted out as quickly as possible, thanks in advance.
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Re: Can anyone help, please? Timing issue. .

Postby 93celicaconv » Thu Jul 09, 2020 9:17 pm

Previously, when you bridged E1 & TE1, did your check engine light flash consistently?

If no, then your bridging process failed, and you never actually grounded TE1 properly.
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Thu Jul 09, 2020 10:04 pm

Yes
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Re: Can anyone help, please? Timing issue. .

Postby 93celicaconv » Fri Jul 10, 2020 12:14 am

And what what the timing result of #1 cylinder referencing the timing mark on the crankshaft pulley?

For reference, with the bridge no longer connecting TE1 to E1, the resulting timing range is between 12 - 21 deg BTDC (so is has a dynamic range of 2 - 11 deg further advance from a control perspective) if the bridged timing was right on the mark (10 deg BTDC).
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Fri Jul 10, 2020 12:29 am

I'm not sure what your asking or saying. . . I'm wanting to know what as-found timing might be when the diagnostic connections are out of the equation. Whatever I have mine set to isn't correct so I need someone's reading (as I mentioned) to use as a reference.
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Re: Can anyone help, please? Timing issue. .

Postby r-town » Fri Jul 10, 2020 9:10 am

FC Zach wrote:I'm not sure what your asking or saying. . . I'm wanting to know what as-found timing might be when the diagnostic connections are out of the equation. Whatever I have mine set to isn't correct so I need someone's reading (as I mentioned) to use as a reference.


According to the BGB when you remove the short between terminals TE1 and E1 the ignition timing should be 12-21deg BTDC @ idle. It says the timing mark moves in a range between 12deg and 21deg.

EDIT: Sorry, did not see that 93celicaconv provided this info already.

When I did my timing belt I jumped TE1 and E1 and turned the distributor until my tachometer saw 10deg BTDC. Unfortunately, I did not rechecked after I removed the jumper. I simply took it for a test drive.

On my first attempt, I forgot to plug a connector below the throttle body, and the car ran like shit. I couldn't get the ignition timing right. Only got it right after I noticed I had a connector unplugged.
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Fri Jul 10, 2020 9:15 am

That's what I need to know, thanks! *I recently removed my TB as well, I'm going to check for any forgotten connections later.
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Re: Can anyone help, please? Timing issue. .

Postby sefiroxx » Sat Jul 11, 2020 7:34 pm

You can't set it without the bypass. The ecu is constantly adjusting fuel and timing to match air and respond to o2. You'll get close but likely will be off 2-4.
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Sat Jul 11, 2020 8:23 pm

Thanks, I'll need to get that sorted when I get back to it.
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Re: Can anyone help, please? Timing issue. .

Postby 93celicaconv » Sat Jul 11, 2020 8:38 pm

sefiroxx wrote:You can't set it without the bypass. The ecu is constantly adjusting fuel and timing to match air and respond to o2. You'll get close but likely will be off 2-4.

Zach previously said he bridged TE1 & E1, and verified the check engine light was flashing, which denotes the ignition is ready for checking timing against a 10 deg BTDC target. Or did I misinterpret Zach's response earlier?
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Sat Jul 11, 2020 8:54 pm

93celicaconv wrote:Zach previously said he bridged TE1 & E1, and verified the check engine light was flashing, which denotes the ignition is ready for checking timing against a 10 deg BTDC target. Or did I misinterpret Zach's response earlier?


"It might sound like an odd question but when I bridge those two terminals there's no audible change in idle or timing"

Misinterpret? Yes and no. . Yes I connected it properly but no it did not function as it should.
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Re: Can anyone help, please? Timing issue. .

Postby 93celicaconv » Sat Jul 11, 2020 11:38 pm

FC Zach wrote:
93celicaconv wrote:Zach previously said he bridged TE1 & E1, and verified the check engine light was flashing, which denotes the ignition is ready for checking timing against a 10 deg BTDC target. Or did I misinterpret Zach's response earlier?


"It might sound like an odd question but when I bridge those two terminals there's no audible change in idle or timing"

Misinterpret? Yes and no. . Yes I connected it properly but no it did not function as it should.

Are you sure it didn't function? What is the timing without bridging? Knowing the answer to this question will tell you if it worked and all is good, or if it did not work.
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Sun Jul 12, 2020 12:01 am

93celicaconv wrote:Are you sure it didn't function?


Yes I am sure, I checked after pulling the connection and there was no difference in timing. . . As I feel I've stated multiple times already.
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Re: Can anyone help, please? Timing issue. .

Postby 93celicaconv » Sun Jul 12, 2020 12:24 am

There isn't going to me a noticeable change in idle after you time it properly, then pull the jumper out of the ports. Maybe a slight change, but many people wouldn't notice it much.

I guess I don't understand why you don't wish to check where the timing mark is without the jumper in place. As some have said, it should likely be in the 12-16 deg BTDC range without the jumper when idling on a warm engine.
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Re: Can anyone help, please? Timing issue. .

Postby FC Zach » Sun Jul 12, 2020 12:58 am

93celicaconv wrote:I guess I don't understand why you don't wish to check where the timing mark is without the jumper in place. As some have said, it should likely be in the 12-16 deg BTDC range without the jumper when idling on a warm engine.


My God. . I did, as I've said already. There is no change.
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