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Author Topic: starting issue  (Read 12586 times)

shadow

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starting issue
« on: August 03, 2018, 01:46:33 AM »
94 teg ls. sometimes itll fire right up, but others, it will just crank for a while before finally firing up. car sat for about a year not running. changed fluids, new battery when i got it running. what could be causing this? car is stock, and drives fine. its just the starting issue.
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Eggylshatch

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Re: starting issue
« Reply #1 on: October 03, 2018, 05:36:40 PM »
Have you looked at the contacts under the distributor cap? If you live in a wet/humid place they can corrode quite a bit while sitting.

And what about the gas? You get some fresh stuff in there?
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brine04

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Re: starting issue
« Reply #2 on: October 05, 2018, 12:01:03 PM »
Is the fuel pump priming ever time? Main relay could be on the way out but not totally fucked yet.
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shadow

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Re: starting issue
« Reply #3 on: October 20, 2018, 01:40:58 AM »
slapped on a new dizzy cap like a week after i got it back on the road. thought it went away, but continued doing it a day later. ill take a look at the contacts...im in ca, it can be humid, but its usually warm out.

it has fresh gas. ive been using the car for over a year now lol. i can hear the fuel pump prime every single time. cycling the pump a few times before i crank it doesnt seem to help any.
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shadow

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Re: starting issue
« Reply #4 on: November 07, 2018, 09:19:12 PM »
checked the dizzy, like i said it was new, all the contacts look fine. cleaned out the IACV and the throttle body a bit. nothing really changed, idle is a little low now lol. spark plugs and cables seem fine too. it does have a walbro pump in the tank, i threw it in there when it was turbo'd..could that be the culprit? fuel pressure is about 45psi i belive.

 ??? ???
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corey88

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Re: starting issue
« Reply #5 on: November 09, 2018, 05:53:34 PM »
fuel filter gummed up?
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92CXyD

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Re: starting issue
« Reply #6 on: November 09, 2018, 05:53:46 PM »
Quote from: shadow on November 07, 2018, 09:19:12 PM
checked the dizzy, like i said it was new, all the contacts look fine. cleaned out the IACV and the throttle body a bit. nothing really changed, idle is a little low now lol. spark plugs and cables seem fine too. it does have a walbro pump in the tank, i threw it in there when it was turbo'd..could that be the culprit? fuel pressure is about 45psi i belive.

 ??? ???

Did you adjust idle w/o IAC according to factory manual?
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shadow

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Re: starting issue
« Reply #7 on: November 09, 2018, 06:38:46 PM »
Quote from: corey88 on November 09, 2018, 05:53:34 PM
fuel filter gummed up?

i remember changing that bitch..not sure when tho lol, guess that will be next
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shadow

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Re: starting issue
« Reply #8 on: November 09, 2018, 06:39:53 PM »
Quote from: 92CXyD on November 09, 2018, 05:53:46 PM
Quote from: shadow on November 07, 2018, 09:19:12 PM
checked the dizzy, like i said it was new, all the contacts look fine. cleaned out the IACV and the throttle body a bit. nothing really changed, idle is a little low now lol. spark plugs and cables seem fine too. it does have a walbro pump in the tank, i threw it in there when it was turbo'd..could that be the culprit? fuel pressure is about 45psi i belive.

 ??? ???

Did you adjust idle w/o IAC according to factory manual?

negative, didnt even know that was a thing. enlighten me russ!
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shadow

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Re: starting issue
« Reply #9 on: November 09, 2018, 06:42:23 PM »
i google'd it, i will do that and report back!
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shadow

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Re: starting issue
« Reply #10 on: November 09, 2018, 09:01:30 PM »
well, my idle sits right at 650, i meant when i start it up the idle is low, it doesnt shoot up like it supposed to bc its cold. it kinda struggles when it actually starts, i have to give it some gas for it not to stall :?:
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92CXyD

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Re: starting issue
« Reply #11 on: November 10, 2018, 05:41:17 PM »
Quote from: shadow on November 09, 2018, 09:01:30 PM
well, my idle sits right at 650, i meant when i start it up the idle is low, it doesnt shoot up like it supposed to bc its cold. it kinda struggles when it actually starts, i have to give it some gas for it not to stall :?:
Ok wait until engine is warmed , up jump the harness under dash, set idle close to target,

Adjust ignition timing, then adj idle w/o IAC connected, make sure the throttle cable isn't to tight, then adj idle screw on tb.

You will get a CEL IAC disconnected.  turn car off, then pull jumper, disconnect a fuse for backup for ecu, then hook up IAC.

Wait 30sec or longer, then start car see what ya get.
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shadow

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Re: starting issue
« Reply #12 on: March 12, 2019, 10:59:19 PM »
could it be the icm? :-\
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92CXyD

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Re: starting issue
« Reply #13 on: March 13, 2019, 12:05:40 PM »
Quote from: shadow on March 12, 2019, 10:59:19 PM
could it be the icm? :-\

Possible but would happen all the time  :noel:
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shadow

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Re: starting issue
« Reply #14 on: March 14, 2019, 06:37:54 PM »
well idk then lol, only issue is starting. fucker runs fine once on. it is rather annoying tho :-\
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shadow

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Re: starting issue
« Reply #15 on: January 16, 2020, 05:01:29 PM »
still have the same issue, but now an added symptom. car hesitates under acceleration sometimes, randomly usually. it feels like all power just goes, and a second later...its fine :?:
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Tim

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Re: starting issue
« Reply #16 on: January 17, 2020, 12:43:40 PM »
Did you checo fuel pressure is at 45ish or remembering from back when it was turbo? I've had fuel pressure issues cause this.
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shadow

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Re: starting issue
« Reply #17 on: February 20, 2020, 04:13:51 PM »
fuel pressure at the fuel filter is 45-50
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