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toyon35s
01-18-2008, 04:28 PM
ok,my cousin has a 1987 suburban with a fuel injeted 350,run good untill it warms up,then dont start again,has changed feul pump,injectrs,ignition moguel,plugs cap,rotor,anyone have any ideas?:confused0006: [cheers] also has put new o2 censor

lizard
01-18-2008, 05:20 PM
my VW had a fuel accumalater that was gone , same problem . dont know if chev has one , is it hei?

toyon35s
01-18-2008, 05:27 PM
hei i think
[cheers]

Growly Gorilla
01-19-2008, 08:15 AM
Try unplugging the temp sender and then try jumpering it. Will it not start at all when warm,or real long crank? I'm assuming it's still TBI,so have someone watch the injectors while cranking to see if there's fuel coming out.

Always broke
01-19-2008, 10:26 AM
Could also be the Hall effect switch try to borrow a scanner to check the fault codes

adrock
01-20-2008, 04:27 PM
what about oil pressure switch. did they use it as part of the fuel system that old?

pumpkin
01-20-2008, 06:10 PM
Sounds like a coolant temp sensor problem. That style distributor has a vrt, not a hall effect. Does it have spark/fuel when it won't start?

SuperIanMechanic
02-10-2008, 12:23 PM
do you loose spark or fuel , i would check the fuel pump relay , see if it gets hot or any damage to the connector , also check fuel pump wiring , notorious for corrosion @ the tank sender assembly and the ground @ the frame rail , heat equalls resistance in a circuit

SuperIanMechanic
02-10-2008, 12:24 PM
relay by the distributor on the fire wall

C.W.
02-10-2008, 12:41 PM
what about oil pressure switch. did they use it as part of the fuel system that old?
Yes they did use the oil pressure switch as part of the fuel pump cicuit on those. My 88 s15 was wired that way with the 2.5L and is now with the 355 as well. If you suspect weak or no oil pressure when its hot or faulty oil psi switch un plug it and run a jumper wire between the two parralell wires on the plug (its probly a 3 prong plug) This will by pass the oil switch.