1995 GMC Jimmy Repair Question
Mileage: 255,886 miles.
95 jimmy 256885miles 4.3 vtec had eratic idle for couple of days. cleaned iac valve this am now have crank no start.checked fuel pressure koeo 60psi then drops to zero after 2 sec. a/c delco fuel pump put in 8months ago.was getting tps code also.no start
Asked by kvn4Answer
Title had been truncated. Can you please elaborate?
If you had sprayed carb ceaner into the throttle body, it would definitely make it hard to start, at least for a while.
The fuel pressure driopping to 0 after 2 seconds indicate the fuel pump is working but you have a leak in the system. It could be from the fuel delivery line and intank or the fuel pressure regulator is bad.
Try clamping the return hose and testing the pressure to see if it drops, if yes, you would need to check the fuel pump side. If pressure does not drop, replace the fuel pressure regulator.
had tps code yesterday with eractic idle but car started no problem . cleaned iac valve this am and now have no start even with starter fluid. checked spider area inside intake and just wet no gas smell.tried startind seems to want to start but doesnt catch.
any pics of fuel return hose.or instructions . thanks k
Ee if the plugs are soked might be flooded
Is your system CPI or TBI? For TBI the pressure dropping to 0 when ignition is turned off is correct.
cpi pulled one plug and gunked up and wet. shall get new ones tonight when wife gets home as stuck for now.is best way to change them to go through wheel wells.will do tomorrow and let you guys know . thanks again k
You're symptoms are pointing to a leaking fuel injector assembly. The early Vortecs were notorious for that.
changed plugs (i hate doing the left side) started right up but back to my high idle. have code for the tps ,could that be my problem or something else causing code.money very tight but if you think should replace ill go with your advice.
Yes a bad tps can cause a hi idle. Can you check the voltage on all 3 wires and let me know what thay are with key on