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post #1 of (permalink) Old 05-23-2001, 11:53 AM
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bogging @ low end

1988.5 Samurai
- bogging at from the low end to the high revs
- feels like driving at 60% power even when pedal to the floor
- was doing it only in the damper weather earlier but now doing it on the hotter days
- using Ethanol based fuel from local McEwen station
- changed fuel filter last year
- truck is entirely stock, except susp., shackle and 235's
- throttle body injected
- Any ideas?


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post #2 of (permalink) Old 05-23-2001, 01:51 PM
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Re: bogging @ low end

It could be any number of things. An 88.5 with FI? If so, run the diagnostic tests as per the manual. It will check the various sensors in ther FI system. My guess would be the TPS, but that is only a guess. The injector might be clogged is another possibility. If you need any info from the late model FSM, let me know as I have one. Hope this helps guide you to a sollution.....

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post #3 of (permalink) Old 05-23-2001, 02:41 PM
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Re: bogging @ low end

Start by checking the AIr filter, Then do a full tune up
if you haven't in awhile. You could also throw some injector
cleaner in it. 88.5's I think came with carbs. Has it been swapped to F.I.? Good luck

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post #4 of (permalink) Old 05-23-2001, 05:04 PM
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Re: bogging @ low end

If you still have a cat, it could be that.

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post #5 of (permalink) Old 05-24-2001, 01:57 AM
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Re: bogging @ low end

It could be a MAP sensor or something related like that.


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post #6 of (permalink) Old 05-24-2001, 03:47 AM
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Re: bogging @ low end

If it does when mositure in air and or when ambient atm.
temp is up indicates close proxmity short turns or power
out diode cross over short, loading alternator and stealing
engine horsepower. Also Father knows best do a cat count.

post #7 of (permalink) Old 05-24-2001, 10:26 PM
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Re: bogging @ low end

I think the idea of checking the cat would be goon too. They can melt inside and really cut down on exhaust flow. Happens alot where it's hot.

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