Swansen

Well after getting the engine back together, there were some issues and after doing some troubleshooting, found it was the EGR valve, and also the vacuum hoses. Before the rebuild, they were just jerry rigged to work, so i was planning on hooking then up right but i haven't been able to find a good picture/diagram. that said, i just have the vacuum lines i need, or know are right, (the one on the EGR tube, and to the charcoal canister) everything else is plugged, or what needs to be. That said, i set the basic timing right, but when i tried to set the advance it came up zero. I know it should be something like 14, but i was wondering what was going on, i was thinking it might be an issue with all the vacuum hoses not being connected, thanks for any help.

--edit-- 88 pickup 22RE

Swansen

i'll simplify all of that, the base timing works out fine, but when i go to check the advance, it comes up reading zero. I was thinking it was because a lot of the vacuum lines aren't hooked up, could that be the case or is it something else.

rdlsz24

When you say you are checking the advance, does that mean you are jumping the 2 terminals when the engine is warm?

Rob

WFO

When I got mine put back together I had a vacume leak and was trying to set the timing. I couldnt get it below
+15, fixed the vacume leak and it went down in the negative without adjusting the timing.

Fix the vacume probs first.

rdlsz24

Also if the position of your distributer is off you won't get the timing correct. I had that problem when doing my head gasket replacement.

Rob

YotaJunky

Also, check your TPS. If it's not adjusted properly, you may not be able to set your timing.

Troy

Swansen

I'm pretty sure the TPS is fine because i don't have any idle issues, also i don't have any vacuum leaks, i plugged all of them off, except the one to the charcoal canister and to the EGR tube. So i'm not sure if that would effect my ability to check the advance or not. To Rob, no, the advance is after the jump, thats the base timing which is pretty much perfect. I have to check some check engine codes to, but i was having some issues with the computer so it wasn't having it. There might be something there to. Well thanks guys, if you have any further advice, it would be appreciated.

MMA_Alex

the base timing is with the terminals jumped. if the timing changes by jumping the terminals then the tps is somewhere in the ballpark, and you should be able to set it correctly. If the vacuum is not right then it probably wont set right, or atleast it will change when you get the vacuum back to what it is supposed to be.

with certain cel's the engine will go into limp mode, and you wont be able to set the timing right. check and clear the codes first, also they might show something else that is changing your timing

Swansen

yeah, so i got the codes, 02 sensor open, (prolly don't have a ground hooked up) knock sensor open or short (my plug is old and gets loose easy, just need to be cleaned and put back on, fixes that issue) Then the last one, which is an issue, No RPM signal to ECU while crank, which i'm not really sure what would cause that.

toyota_mdt_tech

Are you jumping pins TE and E1? This is where you set base timing. If this isnt doable, check TPS adjsutment.

Swansen

No, the base timing is fine, its the advance i'm having problems with. It comes up zero when i check it. I'm pretty sure i don't have a vacuum leak, but i'll double check.

MMA_Alex

wait so the base is 5btdc, and then without the terminals its tdc? it should be further btdc the faster the engine goes...

toyota_mdt_tech

Well, if the base timing is fine, why does it come up zero when you check it? I guess I'm not understanding? Base timing (10' btdc on a 3.0) and then there is no way timing will go to zero if base is set at 10 (or even 5' for a 22RE), in fact, you will never ger a reading to the left of base.

Swansen

No, the base timing is what you set with the two connectors jumped, and then after that, you unconnect the jumper and check the advance, which for a 22RE should be something from 10-14, but i come up with a reading of zero, because i have no idea. I hooked up the vacuum lines and everything is shiny, so i have no idea why the advance won't come up. But oh yeah, did figure out why the knock sensor came up, and that would be because the wire came off the plug, so that should be a good time.