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#1
04-08-2008, 06:42 PM
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88 Astro runs bad until very warmed up
**FIXED**
New plugs rotor cap fuel filter, checked vacuum lines gasket under throttle body replaced 2 years ago. Very bad idle and runs terrible when cold after 15-30 minutes of driving gets much better. Before new exhaust installed was fine. This happened all of a sudden. 157k miles. IT WAS THE FUEL PUMP NOT PROVIDING ADEQUATE PRESSURE. IT FINALLY DIED WHEN I WAS TESTING THE EGR. BANGED ON THE TANK AND IT SPRUNG TO LIFE AND ENGINE STARTED. REPLACED AND ALL PROBELMS GONE. Last edited by orvillespooner; 04-09-2008 at 07:40 PM. 
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#2
04-08-2008, 10:59 PM
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Re: 88 Astro runs bad until very warmed up
Bad idle usually means stuck open EGR-- have you checked yours???
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles-
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#3
04-09-2008, 07:02 AM
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Re: 88 Astro runs bad until very warmed up
No I did not check that as it as still looks new as it was replaced 4 years ago and was thinking they usually last longer than that but maybe a vac line is the cause or debris stuck in the valve. Thanks a lot!
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