Possible. Idle was never high before and with cable disconnected it drops back down to like 600Wonder if his idle is high because throttle isn’t fully closing.
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Possible. Idle was never high before and with cable disconnected it drops back down to like 600Wonder if his idle is high because throttle isn’t fully closing.
Truck is extremely sluggish and down on power, seems like timing is having trouble advancing and now at low acceleration it surges a bit, low as in really really low.Looks like your TPS is malfunctioning.
What problem are you trying to diagnose?
Dont know why its doing that, the tps itself I have tested and it is correct at around .54 volts when gas pedal is not touched.idk...tps reads where it should at closed throttle....but then it's saying that percentage....
You need to make sure those knock counts aren't real and causing the computer to constantly retard your timing...It seems like the truck is having a timing advance issue in general, it advanced but not enough causing it to be super sluggish.
Truck is set to zero, new knock sensor, new delco icm, new knock sensor wire, all new connectors, ESC tested to be good, new ECM, every ignition advance item is replaced and new.You need to make sure those knock counts aren't real and causing the computer to constantly retard your timing...
I'd put timing back to zero to make sure you get things working right there.
hmmm..You said your exhaust is loud?Truck is set to zero, new knock sensor, new delco icm, new knock sensor wire, all new connectors, ESC tested to be good, new ECM, every ignition advance item is replaced and new.
That would make sense with some of the bizarre readings...Dont remember but I would assume because battery is at 0 Volts, I believe I did shut it rught before taking that.
Doing that could actually cause knocking...seems like fighting upstream...neat theory though....I wonder if its 8 degrees if I can set the truck 8 degrees advance and have an aggressive idle but regular timing once truck starts going
Im starting to wonder if it some sort of injector issue. The truck had developed a pretty good misfire on start and pretty consistent under light load. I just checked and recently my passenger exhaust (true dual) was full of carbon but the driver was fine. I just checked and at idle the truck is putting out some hefty blue smoke out the passenger side but the driver is next to nothing, I wonder if rhe mis is on that side and gas/ oil are just raw getting into exhaust or if it is one injector is dumping fuel, I know each injector feeds each bank of the motor but its an idea, they are original injectors and the original injector connectors (which are extremely loose feeling)That would make sense with some of the bizarre readings...
Doing that could actually cause knocking...seems like fighting upstream...neat theory though....
10 awg wire isn't going to hurt anything...unless the weight of it pulls apart something maybe....
Here are 2 pages from your 88 Emissions manual from the sticky section. I know you don't have codes but it shows the operation of the circuit so you can test some things or devise a test to rule out anything funky in the circuit....
I'll look back at it...
I think Schurkey is familiar with the 88...Hopefully he'll have some advice....