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Mephisto
Mephisto
These trucks are cursed
Last Activity: Yesterday, 02:26 AM
Joined: 03-01-2001
Location: The People's Republik of Kalifornia
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  • Mephisto
    replied to Hesitation problem
    yeah... i was trying to go with the cheap parts first. Unfortunately I don't have anyone locally with a spare distributor to try that. I just ordered a new distributor, which will be here monday. After some adjustments to the throttle stop, IAC and TPS are all good. The chip is seated properly as...
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  • Mephisto
    replied to Hesitation problem
    No change with a new MAP sensor either... Here's another video of the sound the truck makes when I barely tap the gas... it's audible in the cab and under the hood... and sounds like it's the distributor. I gotta get the stethoscope out and see if I can pin point it.

    https://youtu.be/...
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    Last edited by Mephisto; 03-14-2019, 05:38 PM.

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  • Mephisto
    replied to Hesitation problem
    Well... it's not the coil or the ICM... got those installed today and no change.

    Update... and it's not the cap and rotor either.

    Map sensor shows up tomorrow...
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    Last edited by Mephisto; 03-13-2019, 06:50 PM.

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  • Mephisto
    replied to Hesitation problem
    I pulled the cap yesterday, and there's no side to side play in the distributor. There's maybe 2mm of up/down play in the distributor, and a lil over 1/8" of rotational play, which I believe is ok.
    All the wiring and connections to the coil and ICM look good. I have a new coil, cap/rotor,...
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  • Mephisto
    replied to Hesitation problem
    Hey guys, sorry for the delay... had to order a new laptop battery for my ancient XP laptop, it wouldn't hold a charge long enough for me to do a DM run.

    Anyway here's a file of just cruising around for a bit, and getting on the gas a few times... I didn't do any WOT bursts just cause I...
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    Last edited by Mephisto; 03-10-2019, 12:43 AM.

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  • Mephisto
    replied to Hesitation problem
    Thanks Eric. I'll do a quick run on DM tomorrow, and then I'll drop a link here for download....
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  • Mephisto
    replied to Hesitation problem
    Well I pulled the cap and rotor and the rotor is a lil toasty around the edge, and some of the terminals under the cap are a lil burnt, but I wouldn't say they're bad enough to cause this much of an issue. Swapped the PCV's with the correct ones, and it almost seems like it's gotten worse... and now...
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    Last edited by Mephisto; 03-08-2019, 05:04 PM.

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  • Mephisto
    replied to Hesitation problem
    I'll try to answer everyone at once here...

    I was thinking vacuum leak too, but I have all silicone lines and have gone through them so many times... Everything is connected correctly and there are no cracks, or splits in the lines. I'll have to try the innertube on the intercooler trick...
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  • Mephisto
    replied to Hesitation problem
    Yeah, it does it all the time regardless if it's cold or warmed up. I thought it might be the MAP as well... I don't have a spare 3-bar, so I popped the old 2-bar in there today, just to see if there was any change at all, and it still does the exact same thing. Datamaster shows closed loop, so it's...
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  • Mephisto
    started a topic Hesitation problem

    Hesitation problem

    I've been having a hesitation problem for a while and I'm at wits end now that my Ty is my daily. I have a PLX wideband and when in park if I barely tap the gas like 7.5% TPS, my AFR goes to 10.0. the rpms dip, and then it revs up. It does the same when in drive and hitting the gas from a stop light,...
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