Grrrr...New/ old problem with 97 350...help
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Junior User
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From: SAMSULA
Grrrr...New/ old problem with 97 350...help
**97 F-350 psd,cc, srw, 4x4, stock as stock can be***
Just when I get on here and talk about dumping money into it for performance, wouldnt you know it, it starts acting up again. Got into the truck to go into town. Truck started right up, but then the engine starts to " buck" for lack of better words for you technical people. Best way to describe it is like you are getting on and off the pedal making the truck buck like a bull. Hit the pedal and run it up to 2000 rpm's for about 5 seconds and it starts running right. It has done this off and on in the past. Usually once every 3 months or so. Replaced the fuel pump and cps about a month ago. I have ran approx. 160 gal. of diesel through it since then with no problems. Any thoughts?
Just when I get on here and talk about dumping money into it for performance, wouldnt you know it, it starts acting up again. Got into the truck to go into town. Truck started right up, but then the engine starts to " buck" for lack of better words for you technical people. Best way to describe it is like you are getting on and off the pedal making the truck buck like a bull. Hit the pedal and run it up to 2000 rpm's for about 5 seconds and it starts running right. It has done this off and on in the past. Usually once every 3 months or so. Replaced the fuel pump and cps about a month ago. I have ran approx. 160 gal. of diesel through it since then with no problems. Any thoughts?
Lead Driver
Joined: May 2007
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From: Belair md
pulled any codes? if none come up being intermittant my guess is first check your main harness where it runs across the left valve cover, that is your main chafe point right at the connector, hang on new thought, does this only happen on first startup? like a rolling surge from idle to about 1500 or so? if thats the case i need a little more info. is it cold where your at? how long did the truck sit? any tailpipe smoke while this happens? if your not sure then the next time this happens hurry up and unplug your icp sensor and see if it goes away, i believe this may be your problem if this is a cold start issue, also if it goes away, check the connector she may be corroded as well, get back to me with a bit more info.
Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
Would you describe the issue as like loping idle? like its going from normal idle to really low idle quickly. If you have ever been to tractor pulls sometimes they have a lope idle. Like a huge cam in a gas engine maybe?
Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
Originally Posted by 97REDPSD
Mine did that and I replace the transmission selector switch.
Lead Driver
Joined: May 2007
Posts: 8,608
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From: Belair md
your trans range sensor makes your trucks buck? while driving or idling on start-up? the way i read his problem was right on start-up. i've had the range sensor cause harsh shifts and improper gear choices but never what he is described, i am quite intriuged, more info on your trucks please
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Junior User
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From: SAMSULA
Originally Posted by tjbeggs
Would you describe the issue as like loping idle? like its going from normal idle to really low idle quickly. If you have ever been to tractor pulls sometimes they have a lope idle. Like a huge cam in a gas engine maybe?
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
2 quarts shouldn't cause any issue. They will run 9 quarts low (Customers truck not mine!) My truck does it bad but it is still very intermittant. Next time it does it shift to neutral. If it stop then replace the trans range selector sensor
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Junior User
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From: SAMSULA
Originally Posted by tjbeggs
2 quarts shouldn't cause any issue. They will run 9 quarts low (Customers truck not mine!) My truck does it bad but it is still very intermittant. Next time it does it shift to neutral. If it stop then replace the trans range selector sensor
