hesitation/stumble 95 tahoe
- Thread starter ERIC95TAHOE
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OP
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ERIC95TAHOE
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that was going to be my last step.. i have been wondering about that
So u pulled the vac line off the egr and the truck ran good? Then u cleaned the egr and put it all back together and still runs like crap? Prolly a bad diaphragm in the egr valve. ReLace the egr or just drive around with the line unplugged I did that for about a year until I had todo smog..
The truck won't throw a code for egr and the diagnostics on obd1 is pretty crap.
The truck won't throw a code for egr and the diagnostics on obd1 is pretty crap.
OP
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ERIC95TAHOE
Full Access Member
i changed the egr valve after i cleaned it because after i cleaned it it through a code for it, so the egr is brand new and still hesitates
OP
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ERIC95TAHOE
Full Access Member
very... i am thinking about changing the injectors though
retorq
Full Access Member
I love threads where people just throw money at a problem and it doesn't go away ... 
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ERIC95TAHOE
Full Access Member
I love threads where people just throw money at a problem and it doesn't go away ...
haha i know.
i drove it around tonight and i never had a single problem, so i guess back to one of my other options, buy a plug in and hook up to my computer and see what the ef is going on. i did not know i could do this with obdI but apparently someone said i could before, any one use such thing before? what all will it show me
SunlitComet
OBS Jedi-Do Good
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ERIC95TAHOE
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thanks! well i will go from there, for some reason i thought that cost $100 not $60 so that makes my day better, well once i get that and hook that up and see whats going on i will continue the post.
retorq
Full Access Member
LOL I think I was the one here that told you to scan it ...
SunlitComet
OBS Jedi-Do Good
It must have you posted that link before.
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ERIC95TAHOE
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yeah, i know you did 
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ERIC95TAHOE
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well i haven't had the money to buy that plug in yet. so i have just been messing around just looking over things in my free time, i did happen to notice my spray pattern from my injectors, its cone like it should be but there are drips in the middle and fuel splashing along the sides inside the throttle body. what do you guys think about this?
retorq
Full Access Member
That is no good ... any idea what the fuel pressure is at??
OP
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ERIC95TAHOE
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that brings me to my other question, how do i check fuel pressure on it? i dont see any spots you could hook a gauge up at
---------- Post added at 01:16 PM ---------- Previous post was at 12:27 PM ----------
ok well i got my fuel pressure im at about 14psi
SunlitComet
OBS Jedi-Do Good
1995 units are Ignition ON Engine OFF 62-90 kPa (9-13 psi). So you are good.
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ERIC95TAHOE
Full Access Member
which leads me to think we are dealin with some junk injectors? when it gets dark out im going to take a peak at them again so i can see the spray much better to be exactly certain. when i first got the truck i did pull the regulator housing off and put new gaskets seals and screens on the injectors. after putting it back together i did create a leak, fuel would pool on the top of the injectors and it ran worse. i fixed the leak but it still had the hesitation i started with before i did that.
SunlitComet
OBS Jedi-Do Good
Get a engine timing light and connect it as if checking timing and look at the spray pattern at nite with it.
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