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  #1  
Old 04-07-2013, 07:11 PM
DJFriar DJFriar is offline
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Question Random loss of acceleration / popping noise

I have a '97 1500 Ext Cab, 4x2, with the 5.2L V8. 98% of the time, she runs fine (though seems thirsty, but that's a later topic). But occasionally she will just stop responding to throttle input. I can floor her, and I will get an occasional popping sound, but no acceleration or anything. If I turn her off for a few hours, she will run fine again.

I have a code reader, and it can do real time monitoring of various sensors and such. The problem is, I've never used it for that, and I have no idea what "normal" is.

My plan is to keep the reader in the truck now. I'll attach it to get a run or two of her running normally; then if she acts up again, I'll attach it and try to capture the readings while its having the issue.

Aside from that troubleshooting step, is there anything I should check before hand? I assume it is a sensor of some sort giving bad info. I have a service manual and a multimeter, so I should be able to check most things, i just don't honestly have a clue where to start on this one. I hear its fuel related, or it's the mass air flow sensor; others say its a bad computer, etc etc etc.

tl;dr Truck occasionally stops going and will pop when given full throttle. Any sensors or things to check first?
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Old 04-07-2013, 10:31 PM
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Phatninja55 Phatninja55 is offline
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Quote:
Originally Posted by DJFriar View Post
I have a '97 1500 Ext Cab, 4x2, with the 5.2L V8. 98% of the time, she runs fine (though seems thirsty, but that's a later topic). But occasionally she will just stop responding to throttle input. I can floor her, and I will get an occasional popping sound, but no acceleration or anything. If I turn her off for a few hours, she will run fine again.

I have a code reader, and it can do real time monitoring of various sensors and such. The problem is, I've never used it for that, and I have no idea what "normal" is.

My plan is to keep the reader in the truck now. I'll attach it to get a run or two of her running normally; then if she acts up again, I'll attach it and try to capture the readings while its having the issue.

Aside from that troubleshooting step, is there anything I should check before hand? I assume it is a sensor of some sort giving bad info. I have a service manual and a multimeter, so I should be able to check most things, i just don't honestly have a clue where to start on this one. I hear its fuel related, or it's the mass air flow sensor; others say its a bad computer, etc etc etc.

tl;dr Truck occasionally stops going and will pop when given full throttle. Any sensors or things to check first?
I'm no expert, but maybe check the throttle position sensor.
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Old 04-12-2013, 03:13 AM
DJFriar DJFriar is offline
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Originally Posted by Phatninja55 View Post
I'm no expert, but maybe check the throttle position sensor.
I will try that this weekend and report back.
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Old 04-12-2013, 05:52 AM
van tough van tough is offline
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I've been having problems too,.similar. I changed a lot of stuff. If your truck is burning rich,......You might want to put a high flow air filter on ,,,,, It helped me tremendously .,.. I still need to fine tune it but it's not stalling or popping ,.or hesitating any more . I've found that the magnum motors are sensitive .
I also cleaned the throttle body good & added a throttle body spacer
good luck,........................Larry
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