chewy012
New Member
- Joined
- Jan 31, 2016
- Messages
- 427
- Reaction score
- 1
- Points
- 0
- Location
- Colorado Springs, CO
- Vehicle Year
- 1992
- Make / Model
- Ford
- Engine Size
- 4.0 OHV
- Transmission
- Manual
Ok, so, my engine is stalling out.
Here's what I'm currently observing. On a cooled down engine, it starts up, idles for about 30 sec. to a minute, then bogs out and dies. Plugged in my scanner, no codes, but watching to data stream, at the time of bogging fuel injector pulse width jumps from 1.6ms to 10 ms. Opening up the throttle doesn't bring the RPMs up, only prolongs the final shut down buy 10 or 15 miserable seconds.
Can't figure it out, when I was warm, I could run it down the highway basically until I had to lift my foot off the throttle then it would die, cool, it dies shortly after start up.
MAF, TPS, IAT, and ECT check out, truck didn't over heat at all. Also, fuel pressure is solid, and regulator is not leaking. I also considered vapor lock, but fuel shoots outta the schrader valve nice and steadily.
My next thought is IAC but, I would think opening the throttle plate when it starts bogging would bring the RPMs up.
Anyway, any thoughts are appreciated. I reset the codes, and unhooked the battery, no solution.
Also, turning the key to on no longer illuminates the CEL, but when I had the scanner hooked up, when it would click the relays and what have yous, the CEL flashed with the clicks.
I'm almost stumped. I've got a few experiments I'm gonna try tomorrow.
Sent from my XT1254 using Tapatalk
Here's what I'm currently observing. On a cooled down engine, it starts up, idles for about 30 sec. to a minute, then bogs out and dies. Plugged in my scanner, no codes, but watching to data stream, at the time of bogging fuel injector pulse width jumps from 1.6ms to 10 ms. Opening up the throttle doesn't bring the RPMs up, only prolongs the final shut down buy 10 or 15 miserable seconds.
Can't figure it out, when I was warm, I could run it down the highway basically until I had to lift my foot off the throttle then it would die, cool, it dies shortly after start up.
MAF, TPS, IAT, and ECT check out, truck didn't over heat at all. Also, fuel pressure is solid, and regulator is not leaking. I also considered vapor lock, but fuel shoots outta the schrader valve nice and steadily.
My next thought is IAC but, I would think opening the throttle plate when it starts bogging would bring the RPMs up.
Anyway, any thoughts are appreciated. I reset the codes, and unhooked the battery, no solution.
Also, turning the key to on no longer illuminates the CEL, but when I had the scanner hooked up, when it would click the relays and what have yous, the CEL flashed with the clicks.
I'm almost stumped. I've got a few experiments I'm gonna try tomorrow.
Sent from my XT1254 using Tapatalk