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09-23-2012, 12:10 PM
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#1 |
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resident wrencher
Join Date: Dec 2006
Location: ramona california
Posts: 720
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1990 jimmy issue
So I'm going to look at a 90 jimmy or is it a blazer I Dont Know. I'm sure it won't matter. But the guy says it idles fine in gear and neutral but as soon as you give it gas it cuts out. Any idea what it is sorry I don't have much more info right now. I'll try to get more info on engine and trans
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09-23-2012, 01:29 PM
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#2 |
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resident wrencher
Join Date: Dec 2006
Location: ramona california
Posts: 720
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Re: 1990 jimmy issue
So I guess it's a 350 with a carb
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09-23-2012, 07:05 PM
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#3 |
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Registered User
Join Date: May 2008
Location: Spokane, Washington
Posts: 596
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Re: 1990 jimmy issue
Nope should be a 350 with a throttle body injection. Cutting out under load could be low fuel pressure(fuel pump in tank)
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09-23-2012, 10:14 PM
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#4 |
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Account Suspended
Join Date: Nov 2004
Location: Rhode Island/Vermont
Posts: 583
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Re: 1990 jimmy issue
I vote first related to the fuel pump going bad or second the strainer sock being clogged with debris. Ther is always the chance that the injector is clogged/needs replacement but most likely the first one as previously stated.
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09-23-2012, 10:36 PM
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#5 |
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resident wrencher
Join Date: Dec 2006
Location: ramona california
Posts: 720
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Re: 1990 jimmy issue
Well the guy said its a carb set up I guess I will have to go check it out is there an easy way I access the fuel pump
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09-23-2012, 11:29 PM
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#6 | |
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In the Forgotten far North.
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: 1990 jimmy issue
Quote:
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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09-24-2012, 09:35 AM
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#7 |
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Registered User
Join Date: Aug 2012
Location: Northeast KS
Posts: 1,775
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Re: 1990 jimmy issue
if its a carb, could be a filter issue.
does it rev up in neutral and park? if so, that's your pickle.
__________________
1999 GMC Suburban K2500 SLT, 454/4L80E 1991 Z/28, 6.0L/T56 1949 GMC 250, S10 Frame, 6.0L/4L80E Instagram @aceshighspeedshop |
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09-24-2012, 11:04 AM
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#8 |
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resident wrencher
Join Date: Dec 2006
Location: ramona california
Posts: 720
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Re: 1990 jimmy issue
I haven't seen it they guy seems like he's either annoyed with questions or just doesn't know. He said it idles good in gear an park but rev it it dies. I guess I'll have to go look at it
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09-24-2012, 12:06 PM
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#9 |
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Registered User
Join Date: Sep 2012
Location: Portland In
Posts: 15
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Re: 1990 jimmy issue
sounds like ignition. Plan on a full tune up.
1990 is TBI injection unless it's been raped and put back to a carb. if that;'s the case it will not pass emissions if it's applicable. It may be a TBI unit as a lot of people don;'t know the diff. 
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