[Viking24v]

Dead pedal.... ugh. I have been battling this for a couple months now. Any insight would be greatly appreciated

I have a 98.5 24valve power train and chassis stuffed below a 1958 chev Viking 2.5 ton cab. I'm running dakota digital gauges and all the stock wiring harness is still in the chassis with the exception of the gauges.



Couple months back I noticed intermittent dead pedal and irratic throttle response. I had been having issues with a set of 150hp Injectors and hard starting so I thought it was that. I put the stock injectors back in and my hard starting went away but not the dead pedal



I have since replaced the map sensor and put in a apps sensor. Disconnect my edge comp box.. I did notice the alternator wasn't charging so I just replaced that and had both batteries bench test. I should mention the batteries are located in a underhung box under the deck... I just relocated the temp sensor as that hadn't been done yet

I also just ran it today with the alternator charge and field wires disconnect think maybe its ac noise but that didn't help

I would love to get my summer ride back on the road. Thanks

 

[Viking24v]

Thanks for your response i have P0122 throttle position sensor circuit 1 low.and po237. Turbo boost pressure sensor low





I did do a boost pressure test and found a leak and repair it and now its holding pressure

The dead pedal now happens as soon as I start up the truck. I can't drive it anywhere.... the battery cables are very long as the go all the way back to the undermount box drivers side under the deck...

 

[Viking24v]

I have been doing apps reset every time the batteries are disconnected. I upgraded to the timbo apps when the sensor was changed. it's only charging at 13.5 volts. That's with the grid heaters disconnected. Havnt run it longer than 10min as I can't get it further from the house with the dead pedal... the longer battery cables are 4/0 welding cable from the Battery to the starter and starter to tipm. Alternator to tipm. Checked grounds and all have continuity back to the battery.



No paint. Leaving the the patina.