I'm Back! '90 GTUs - Page 13

***TitaniumTT*** · 08-23-2016, 09:17 AM

TPS would not cause it to stall out like that. AFM would though.... as would bad plugs.

project86 · 09-05-2016, 07:05 PM

Quote:

Originally Posted by TitaniumTT

TPS would not cause it to stall out like that. AFM would though.... as would bad plugs.

guess ill go get MAF cleaner and plugs then!

***TitaniumTT*** · 09-06-2016, 09:35 AM

MAF cleaner will do nothing for an AFM. AFM is just a door and the sensor measures resistance and figures how far open it is to calc airflow.

Oh wait.... S5 right?

Pete_89T2 · 09-06-2016, 09:58 AM

Quote:

Originally Posted by TitaniumTT

MAF cleaner will do nothing for an AFM. AFM is just a door and the sensor measures resistance and figures how far open it is to calc airflow.

Oh wait.... S5 right?

S5 is still an AFM; the guts of it still uses a variable resistor. Instead of a hinged flapper door like the S4's use to change the resistance with airflow, the S5's use a sliding cone to do the same thing. S4 & S5 AFMs are not interchangeable; different electrical resistance vs. airflow curves and connector pin outs.

project86 · 09-06-2016, 10:00 AM

Quote:

Originally Posted by TitaniumTT

MAF cleaner will do nothing for an AFM. AFM is just a door and the sensor measures resistance and figures how far open it is to calc airflow.

Oh wait.... S5 right?

Yes S5.

project86 · 10-06-2016, 01:53 PM

So... I have the VDI open now. I thought that would help. Doesn't seem to have done anything for me. I just did a little looking around on the other forum and found out that the VDI doesn't have to be open all the time anyway.

The only other thing I found is that there is a vacuum nipple for the injectors that is supposed to help with atomization. I can't recall if I have that connected to a vac source or not though but im not sure that would cause my issues.

I'm truly at a loss now.

project86 · 11-01-2016, 12:18 PM

Getting closer. Adjusted the throttle cable. That helped some. It will actually run a little with out my foot on it but still dies after a few seconds.

project86 · 01-12-2017, 10:42 AM

Slow going but i replaced plugs and wires last night. Seemed to help a bit but still no dice. AFM next? Coils?

djmtsu · 01-12-2017, 10:45 AM

Quote:

Originally Posted by project86

Slow going but i replaced plugs and wires last night. Seemed to help a bit but still no dice. AFM next? Coils?

We have some coils we can swap in. Also, unhook the AFM from the airbox and have someone push the cone in a little when you start the car. If that makes a drastic difference, we might have found a winner. I think you can also unplug it altogether, and if it idles, but doesn't rev, it's also bad.

Pete_89T2 · 01-12-2017, 10:56 AM

Quote:

Originally Posted by djmtsu

We have some coils we can swap in. Also, unhook the AFM from the airbox and have someone push the cone in a little when you start the car. If that makes a drastic difference, we might have found a winner. I think you can also unplug it altogether, and if it idles, but doesn't rev, it's also bad.

Great suggestion, but he doesn't even need to go that far. Just remove the airbox lid, remove panel filter (assuming still all stock airbox & filter). Then he can reach in with a finger & move the AFM cone.

You don't want to move it all that much - if you push it too far in, the car should go pig rich & stall if it's idling.

An S5 won't run with the AFM unplugged; not sure if it will even start that way.

project86 · 01-12-2017, 11:19 AM

Quote:

Originally Posted by Pete_89T2

Great suggestion, but he doesn't even need to go that far. Just remove the airbox lid, remove panel filter (assuming still all stock airbox & filter). Then he can reach in with a finger & move the AFM cone.

You don't want to move it all that much - if you push it too far in, the car should go pig rich & stall if it's idling.

An S5 won't run with the AFM unplugged; not sure if it will even start that way.

Yeah its all stock. Looks like ill need some extra hands..... if you know what I mean.

***TitaniumTT*** · 01-12-2017, 11:23 AM

Quote:

Originally Posted by project86

So... I have the VDI open now. I thought that would help. Doesn't seem to have done anything for me. I just did a little looking around on the other forum and found out that the VDI doesn't have to be open all the time anyway.

The only other thing I found is that there is a vacuum nipple for the injectors that is supposed to help with atomization. I can't recall if I have that connected to a vac source or not though but im not sure that would cause my issues.

I'm truly at a loss now.

If that is left open, it'll cause a vac leak which could be the problem

Quote:

Originally Posted by project86

Slow going but i replaced plugs and wires last night. Seemed to help a bit but still no dice. AFM next? Coils?

Not to be the bearer of bad news but after seeing those plugs, it's time for a compression test.

project86 · 01-12-2017, 11:51 AM

Quote:

Originally Posted by TitaniumTT

If that is left open, it'll cause a vac leak which could be the problem.

its there isn't a hole in the manifold. I was trying to wire the actuator open and the retainer came off so the actuator isn't there anymore. I was told it needed to be in the open position.

Quote:

Originally Posted by TitaniumTT

Not to be the bearer of bad news but after seeing those plugs, it's time for a compression test.

So the plugs had to have been like that when I drove the car home. And it was running great before emissions removal... so I guess im not understanding why compression would be bad?

***TitaniumTT*** · 01-12-2017, 12:24 PM

Quote:

Originally Posted by project86

its there isn't a hole in the manifold. I was trying to wire the actuator open and the retainer came off so the actuator isn't there anymore. I was told it needed to be in the open position.

I wasn't referring to the VDI crap, I was referring to the airbleed for the injectors.

Quote:

Originally Posted by project86

So the plugs had to have been like that when I drove the car home. And it was running great before emissions removal... so I guess im not understanding why compression would be bad?

It looks to me like the electrode broke off. I would pull the plugs and do a quickie audible comp test

project86 · 01-12-2017, 12:30 PM

Quote:

Originally Posted by TitaniumTT

I wasn't referring to the VDI crap, I was referring to the airbleed for the injectors.

Ah ok. Well I guess I need to take it all apart again then.

Quote:

Originally Posted by TitaniumTT

It looks to me like the electrode broke off. I would pull the plugs and do a quickie audible comp test

The thought crossed my mind that it broke off. But after looking at it some more it doesn't really look broken. No jagged edges or anything. When I do an audible comp test what should it sound like?

08-23-2016, 09:17 AM	#181
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	TPS would not cause it to stall out like that. AFM would though.... as would bad plugs. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

09-06-2016, 09:35 AM	#183
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	MAF cleaner will do nothing for an AFM. AFM is just a door and the sensor measures resistance and figures how far open it is to calc airflow. Oh wait.... S5 right? __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

10-06-2016, 01:53 PM	#186
project86 Can't.Make.Up.My.Mind. Join Date: May 2009 Location: Murfreesboro, TN Posts: 1,377 Rep Power: 18	So... I have the VDI open now. I thought that would help. Doesn't seem to have done anything for me. I just did a little looking around on the other forum and found out that the VDI doesn't have to be open all the time anyway. The only other thing I found is that there is a vacuum nipple for the injectors that is supposed to help with atomization. I can't recall if I have that connected to a vac source or not though but im not sure that would cause my issues. I'm truly at a loss now. __________________ '90 GTUs Stay up to date with my photography '06 Toyota Highlander Hybrid '10 Toyota Prius "Initial Success or Total Failure"

11-01-2016, 12:18 PM	#187
project86 Can't.Make.Up.My.Mind. Join Date: May 2009 Location: Murfreesboro, TN Posts: 1,377 Rep Power: 18	Getting closer. Adjusted the throttle cable. That helped some. It will actually run a little with out my foot on it but still dies after a few seconds. __________________ '90 GTUs Stay up to date with my photography '06 Toyota Highlander Hybrid '10 Toyota Prius "Initial Success or Total Failure"