Electronic Throttle stuck at half

[Scott Lambert]

I’ve got an intermittent problem with my QSB 5.9. It won’t go to full power. The throttle position indicator on my vessel view display will show somewhere between 40 and 50% and I can only get about 1500 to 1600 RPM. There are no fault codes displayed. The problem will clear when the engine has been shut down for a while, but may come back at any time. However, if it runs Ok it will keep running Ok until it is shut down, and if power is restricted it will remain restricted until the engine is shut down. Has any body got any ideas?

Topic

[Philip]

Pull the sticker off the end of the handle and confirm its tight…

[raymond gonzalez]

interesting

so I have the same throttle and over time the starboard actual throttle handle has become loose …. the port still has the pronounced click into the first forward and reverse. but the starboard one s actually loose ( has some play in it front to back and side to side) it still works fine but im wondering if anyone has see this and how it can be tightened? or do I need to contact rick at Glendenning ? if so can someone send his info please .. thanks

[Scott Lambert]

Control processor replaced

Hi again, been a long time since i posted but its been winter down here and i have been chasing up a control processor which i was finally able to borrow. Yes, that seems to have fixed it. Thanks again for everyones help.

[Corey Schmidt]

Scott, sounds like you’ll need the processor replaced and/or repaired… Let’s see what Rick says…

[Scott Lambert]

Thanks again Derek, looks like I might have to replace the processor. My max voltage should be 4.05 but I only get 2.3 when the fault is present. 

[Derek chandler]

No when I installed my system everything worked fine just couldn’t get it to full throttle. Yes they replace the processor and all was good . In my boat now I have a zf system that you have to go into the menu and set the voltage for the engine have if it remember correctly it was 3 to 4.7 volts for my qsm11 

[Scott Lambert]

Thanks Derek, I assume it as the control processor that was replaced, and not the throttle handle. Also was your problem intermittent?

[Derek chandler]

I had the same problem before with my Glendenning system on a qsc 500 I ended up having the wrong voltage coming from my controller to the engine sent it back they fixed it and overnighted it back

[Scott Lambert]

Engine guardian mode

I am waiting for Rick to get back to me. In the meantime has anyone experienced Engine Guardian Mode in operation? In particular what RPM were you limited to and did you notice what percentage throttle was displayed on the Vessel view display?

[Scott Lambert]

Glendinning

Hi Corey, I will email service at Glendining. Thanks so much for your help.

[Corey Schmidt]

Glendinning

Yes, it sounds like the EEC system is not doing what it is supposed to especially as the voltage should RISE as throttle input is increased… I would suggest getting a hold of Rick Panish over at Glendinning and have him help you troubleshoot the EEC controller… their support is very good.

[Scott Lambert]

Three Pin Volt Test

Hi Corey, finally did the test you suggested. Not easy as the test didn’t work unless the plugs were reconnected. I finally managed to get a couple of fine wires into the female side and I could then reconnect the plugs. Anyway the voltage readings were 4.23V at idle throttle, 3.9 at idle in gear, steady reduction in voltage up to the point where the failure manifets. At this point voltage is 2.7, and it stays at 2.7 as I further increase throttle. So I guess this means ECM is Ok and the fault lies in the ETS control processor or the control head?

[Scott Lambert]

Three pin volt test

Yes, I know the plug you mean, I will check the voltage and let you know how I go. Might be a week or so till I get back to the boat. 

[Corey Schmidt]

Voltmeter…

Can you pull the 3-pin throttle plug off the 40-pin harness near the engine and test your variable voltage range from the throttle system? You should see about 1.0V – 4.5V steady as you manipulate the throttle handle… if not, you’ll need to dig deeper into the EEC4 box… “fly-by-wire” is tough to troubleshoot.

[Scott Lambert]

Control photo

i have a photo of the underside of the control head showing serial no etc. It says Cummins but is of course made by Glendinning.

[Scott Lambert]

Controls

Hi Corey,

Yep, fully electronic, Glendinning EEC4 single engine setup.

[Corey Schmidt]

Controls

When you say “Active” and Warm/Sync”… do you have an electronic control system like Glendinning or ZF Mathers? OR?

[Rick]

If you had cruise control it would normally be a three switch panel…one with “Cruise” one with SlowRPM and one with +/- to adjust RPM. 

[Scott Lambert]

No Cruise Button

Hi William, no, I only have “ACTIVE” and”WARM SYNC”

[William Walter]

Cruise control

do you have a cruise button .if that is on  you will never get above a certain rpm no matter what you do with throttle.could be a problem with that intermittently.

[Author]

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