can,t get a 1986 vette started or running

grumpyvette · Mar 31, 2012

HEY GRUMPY???? I Have A 1986 C4 ... Now Let Me Start From Beginning ....I CAN,T GET IT TO RUN

1. The Fuel Pump Wont Energize When Key Is Turned To The On Position.
read thru this link below, check your getting spark at the spark plugs, you have compression in each cylinder verify the timing and fuel pressure
viewtopic.php?f=32&t=596

2.when I Wire The Fuel Pump Straight To The Battery I Hear The Fuel Pump Turn On And Hear The Fuel Flowing Through The Fuel Rail.

then its most likely not the fuel pump itself but the lines or relays or fuses, check ALL FUSES AND GROUNDS AND READ THIS
viewtopic.php?f=80&t=728

3.but When I Try To Start It All It Does Is Crank .

whats your oil pressure? if its not above 6 psi the fuel pump won,t continue running
read this
viewtopic.php?f=32&t=816

4.if I Spray Starter Fluid In Throttle Body She Fires Right Up But Then Dies After Fluid Is Consumed.

obviously its got spark so its fuel delivery related, read these
buy a CHEVY SHOP MANUAL FOR YOUR YEAR CORVETTE!
you always need a base line to start from, on a TPI corvette.
a logical step by step approach and keeping accurate notes helps.
youll NEED a multi meter, a shop manual and a timing light and fuel pressure gauge at a minimum,
set and verify your ignition timing, pull trouble codes,set your tps and iac,, then check for vacuum leaks on the lines and intake,then get out your multi meter and verify all the sensors, chances are good its a defective heat sensor or defective o2 sensor, a logical step by step approach will lead you to the problem, youll be amazed at what youll learn reading links. use of a shop manual and multi meter can be very helpful

http://www.harborfreight.com/5-in-1-dig ... 98674.html
put a fuel pressure gauge on the fuel rail on the shrader valve,

a vacuum and fuel pressure gauge is useful

viewtopic.php?f=55&t=606&p=7969&hilit=noid#p7969

viewtopic.php?f=55&t=3108&p=8292&hilit=noid#p8292

viewtopic.php?f=55&t=1475&p=3325#p3325

5. I Bought Another Computer With Prom .. Of Course I Changed The Prom From My Old One To The Semi New One But It Did The Same Thing ..

than its not likely to be a software issue and more than likely related to the fuel delivery

6. When I Put The Semi New Prom With Semi New Computer And Placed It In The Car The Fans Turned On ,( Radiator And Ac) But Still Wont Start Just Crank...

than its not likely to be a software issue and more than likely related to the fuel delivery

7. I Also Changed All The Fusible Links Behind The Battery At This Time And Still Nothing Along With Changing Fuses

8. My Digital Information Center Isnt Working And There Are No Check Engine Lights ..
sure beginning to sound like bad wiring connections or faulty grounds, or you missed reading thru the info previously posted

I Have Been Like Chicken With No Head Cause There Are So Many Different Things That People Have Said It Could Be And Still Nothing

If You Have Had The Same Problem Or Know Of Someone With The Same Problem ... Or If You Have Any Ideas ...please Help

Also I Need A Wiring Diagram Thank You

the answers are in these threads below and sub links, but Ill post info above

viewtopic.php?f=32&t=302&p=21503#p21503

viewtopic.php?f=32&t=1401

viewtopic.php?f=32&t=596

http://www.corvettephotographs.com/c4vettes/codes.htm

viewtopic.php?f=32&t=7416

viewtopic.php?f=70&t=7309&p=24862#p24862

without testing you simply guessing
never guess, deal in verified FACTS!
guessing is a waste of time
think logically, isolate and test
yes IM aware some guys would rather dig out their eye with a red hot fork than to read links, but if you take the time to actually research the problem and isolate and test you,ll soon find the answers
well the first thing you do is pull trouble codes
and it would help if you purchased a shop manual.

can,t get a 1986 vette started or running

grumpyvette

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