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i have had this problem for quite some time and started a while before my head gasket fail had occurred. just decided to try to fix now. cold starts great hot starts fine but warm starts take too much cranking. stepping on the gas a bit while it starts seems to help.
i tested fuel pressure via fuel pressure tester hooked up to fuel rail and followed fsm instructions.
tested vsv
tested cold start injector time switch
i have a new thermal vacuum valve
i have a new coolant temp sensor
throttle position sensor:
im not always too good at figuring out what ohm readings are within spec.
the last three ohm readings on the tps tested good. i wasn't 100 percent positive about the first 2 readings .
0mm VTA-E2 0.50mm IDL-E2 kinda hard to see it shows its just in ohms not kiloohms
if those readings are within spec anything else i should test?
The first picture, of the VTA-E2 @ 0mm, shows 696 ohms, which is well within the spec in the FSM. The FSM specifies .47 OHMS to 6.1Kohms. 696 OHMs is within that range. Even if the book spec is meant to indicate .47 K Ohms to 6.1 k Ohms, it's still well within tolerance, being .696 k ohms.
The second picture, IDL-E2 @ .50 mm, shows 25.7 ohms. The FSM specifies 2.3 k Ohms or less. 25.7 ohms is less than 2,300 ohms. Again, well within spec.
All the K in K Ohms means is "thousand". So 2.3 k or less just means 2300 ohms, or less.
What about the rest of the readings? Are they within tolerance?
Pat☺
The first picture, of the VTA-E2 @ 0mm, shows 696 ohms, which is well within the spec in the FSM. The FSM specifies .47 OHMS to 6.1Kohms. 696 OHMs is within that range. Even if the book spec is meant to indicate .47 K Ohms to 6.1 k Ohms, it's still well within tolerance, being .696 k ohms.
The second picture, IDL-E2 @ .50 mm, shows 25.7 ohms. The FSM specifies 2.3 k Ohms or less. 25.7 ohms is less than 2,300 ohms. Again, well within spec.
All the K in K Ohms means is "thousand". So 2.3 k or less just means 2300 ohms, or less.
What about the rest of the readings? Are they within tolerance?
Pat☺
Thank you for clarifying... Ya the others are within tolerance.
I got the truck to operating temperature set idle, adjusted the tps drove on the freeway for 30 minutes then at a stop light i noticed the idle was a lot lower. below 500rpm. So i drove back. With engine at operating temp set idle and then readjusted tps. Drove on freeway for 30 minutes and same thing happens idles lower now. Is this normal? Do you just have to readjust the idle each time after you adjust tps?
06-02-2022, 08:21 PM
