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141 Posts
'99 Suburban C1500 5.7, all stock, 160k miles. (GMT400)
Usually, I barely look at the key and it fires right up. Runs great, mileage and power are normal, which is to say I can surprise Mustangs at stoplights and I get between 12 and 14 in town and 20-22 highway.
But...from time to time, beginning a few months ago, if I kick the starter over before the fuel pump fully pressurizes, she won't start. When it began, I would have to wait about ten minutes, then all was well again. Then just before Christmas, she just croaked. Sat for three days before she would start again. Then if I let the pump charge first, all was well. Pump finally died. I knew it was coming because of the above.
I replaced the pump...just the pump, not the entire assembly. (I didn't have a couple hundred bucks when the pump itself was $40!) Ran fine.
Ok, the root of the problem: When it has to crank, I get maybe three or four rotations (you know,. rwrr-rwrr-rwrr sound) then all electrical goes out. I thought maybe my starter is sucking too many amps, a high resistance scenario. This has been the case since this whole story started a few months ago, just the truck would start eventually then.
If I jump the truck, it nearly stalls my wife's Jeep when I crank and still cuts out. The battery is about shot, I am sure. Its from 2010 and I live in the desert. If I fully charge the battery with a trickle charger, it charges right up, but still does the same cranking cut-out thing.
I put my multimeter at the fusebox on the feed cable from the battery and a chassis ground. I get full battery voltage at the terminal, in this case it was 13.6 with my Dad's Ranger hooked up with jumpers (yes, from his battery to my positive terminal and chassis ground). Same cranking behavior. Volts went from 13.6 at rest to a low of 7 or 8 while cranking with zero when it all cuts out.
Tonight I am getting the battery tested and renting a fuel pressure tester, but when she starts, she runs great...but I am in a no-start scenario now, so I want to be certain the pump is putting down full pressure. Also going to see if I can borrow my neighbor's battery from his K1500 and see if just a different battery might work. (Internal short in my batt?)
Usually, I barely look at the key and it fires right up. Runs great, mileage and power are normal, which is to say I can surprise Mustangs at stoplights and I get between 12 and 14 in town and 20-22 highway.
But...from time to time, beginning a few months ago, if I kick the starter over before the fuel pump fully pressurizes, she won't start. When it began, I would have to wait about ten minutes, then all was well again. Then just before Christmas, she just croaked. Sat for three days before she would start again. Then if I let the pump charge first, all was well. Pump finally died. I knew it was coming because of the above.
I replaced the pump...just the pump, not the entire assembly. (I didn't have a couple hundred bucks when the pump itself was $40!) Ran fine.
Ok, the root of the problem: When it has to crank, I get maybe three or four rotations (you know,. rwrr-rwrr-rwrr sound) then all electrical goes out. I thought maybe my starter is sucking too many amps, a high resistance scenario. This has been the case since this whole story started a few months ago, just the truck would start eventually then.
If I jump the truck, it nearly stalls my wife's Jeep when I crank and still cuts out. The battery is about shot, I am sure. Its from 2010 and I live in the desert. If I fully charge the battery with a trickle charger, it charges right up, but still does the same cranking cut-out thing.
I put my multimeter at the fusebox on the feed cable from the battery and a chassis ground. I get full battery voltage at the terminal, in this case it was 13.6 with my Dad's Ranger hooked up with jumpers (yes, from his battery to my positive terminal and chassis ground). Same cranking behavior. Volts went from 13.6 at rest to a low of 7 or 8 while cranking with zero when it all cuts out.
Tonight I am getting the battery tested and renting a fuel pressure tester, but when she starts, she runs great...but I am in a no-start scenario now, so I want to be certain the pump is putting down full pressure. Also going to see if I can borrow my neighbor's battery from his K1500 and see if just a different battery might work. (Internal short in my batt?)
