Code 49 Spout circuit

[blackhawk60]

Why would I get a code 49 and not get a 19? My car is running intermittently crappy at low rpm's and it was good for one week after replacing the plug wires but now it's back to its old tricks, and worse. What should I start to look for?

 

[blackhawk60]

How does the Spout circuit work? At what point does it retard the timing 10 TDC? It seems when I am driving that there is some switching point where the timing is correct but if I step on the gas or go up a hill it starts acting up. I also hear ticking towards my T-stat and throttle body. I read a post on that before but don't remember the cause. Anyone know?

 

[projectSHO89]

The SPOUT signal is generated in the PCM and is routed to the DIS module via the SPOUT plug. It is used to dynamically alter timing to maximize performance, under varying conditions under the control of the PCM.

Removal of the SPOUT plug causes the DIS module to drop into a FFEM mode whereby it defaults to a 10 d BTDC timing mode.

Application of timing advance is programmed into the computer as part of its operating strategy.

If you want to investigate your engines timing, you will need an inductive timing light to see what is happening.

Why do you think you deserve to receive a 19 code?

Steve

 

[ilSHOu]

blackhawk do you have any pics of your car? It sounds quite nice according to your sig. Sorry to get off the subject but anyways.... Later, Seth

 

[blackhawk60]

Projectsho, since the problem is intermittent and seems to happen only when the car is in gear, should I just start tracing wires or is there another way to troubleshoot this code and timing problem. What would I be looking for with the timing light if it doesn't seem to happen at idle?

ilSHOu:
blackhawk do you have any pics of your car? It sounds quite nice according to your sig. Sorry to get off the subject but anyways.... Later, Seth

go to my website. http://www.geocities.com/chitown1978/SHO.html

there are two pages.

 

[projectSHO89]

It would be tough to use the timing light while driving around. You didn't mention the circumstances.....

Are your motor mounts worn and causing the motor to move around? This might cause an intermittent in the wiring harness if so.

You can always run the "wiggle test" while watching timing with the light. That may help you isolate an intermittent.

Steve

 

[blackhawk60]

I have reinforced mounts. They feel pretty good so I assume that the engine doesn't move too much.

 

[EZ4U2ENVY]

Hey dude whats up
I got the same problem- maf sensor is shot- when i disconnect oh my does the car feel like 20 more ponies grew up to big horsies... try that and see what happens..

I also had a bad coil pack go bad once but that made it terrible throughout the whole rpm range- the maf on the other hand is only critical from 1k-3750 rpms

<small>[ May 07, 2003, 08:50 PM: Message edited by: EZ4U2ENVY ]</small>

 

[blackhawk60]

EZ4U2ENVY:
Hey dude whats up
I got the same problem- maf sensor is shot- when i disconnect oh my does the car feel like 20 more ponies grew up to big horsies... try that and see what happens..

I also had a bad coil pack go bad once but that made it terrible throughout the whole rpm range- the maf on the other hand is only critical from 1k-3750 rpms

Thanks I'll try that at lunchtime today. If that doesn't work luckily I have a spare parts car in my driveway for a coilpack because I have noticed a delay in the upper RPM's once in a while.

 

[blackhawk60]

OK, disconnecting the Maf helped at small tad but it still felt like the timing was off by 10deg.

 

[blackhawk60]

Could the DIS be stuck in FFEM mode? Or switching between modes erratically.

<small>[ May 08, 2003, 12:28 PM: Message edited by: blackhawk60 ]</small>

 

[EZ4U2ENVY]

well here- my problem with problems of rpm's feeling like it gets stuck somewhere before the secondaries open up- and usually that means a sensor not controlling the fuel and air mixture correctly- your maf will help alot with lower rpms- when you disconnect it it will run smoother in the low rpms but higher it will be fine but once letting in the clutch the rpms want to back off real fast(did you experience that)

My car i can tell is a fuel and air mixture problem not a timing issue- i wouldnt know what a timing issue feels like or how to fix that if it was off- because i thought it was set by sensors(obviously the timing belt has to be on correctly) its all electronic timing so maybe it is a possiblity if the dis is miessed up its sending a wrong signal making up for a wrong timing issue-

let me know what you find out..

 

[blackhawk60]

My car acts as projectsho described with the Spout circuit switching to FFEM mode and retarding the timing 10deg. I just don't know why it's doing that. I don't think it's a wiring problem because it is very consistent. VERY consistent!!! Maybe I can change out the DIS module at home tonight or possibly the PCM. Is the PCM the same as the computer behind the glovebox??

 

[projectSHO89]

The computer's technical name is the PCM (Powertrain Control Module).


Steve

 

[blackhawk60]

That's what I thought. Just making sure we're on the same page. Looks like I have my work cut out for me. cry

 

[blackhawk60]

Well this DIS module is fine. What causes spark knock or the knock sensor to send a signal to the ECU to retard the timing??

 

[luigisho]

Knocking is caused by preignition. Knock sensor detects this and retards timing accordingly all the way to a preset limit. Do you believe the engine is knocking? What oct. rated fuel are you using. Most SPOUT issues I have come across is wiring or PCM related. Sometimes several computer/idle programming resets cure it. It's one of the more difficult ones to track down.

 

[blackhawk60]

I hear a knocking sound more towards the t-stat and I'm using 93 octane religiously. I'm tearing apart tomorrow and I'll be damned if I can't at least find something wrong.

 

[blackhawk60]

Well after getting under the car yesterday, I found that most of the noise is around the crank pulley (not good). I used an extension to listen to the oil pan, xmsn, and other parts. I heard the ticking throughout all but mostly just above the oil pan. I don't think this car was taken care of as much as I thought. I was about to change the oil when I noticed that the drain plug is completely stripped. Who knows when the last time the oil has been changed because it's jet black! The engine is comsuming some oil and there are no leaks. Is it time to drop the oil pan??

<small>[ May 16, 2003, 09:51 AM: Message edited by: blackhawk60 ]</small>

 

[blackhawk60]

^^^