Vehicle cranks strong, fuel is coming out forward of fuel filter so pump is OK. If I put fuel in the throttle body the vehicle starts immediatly and runs til gas runs out (few seconds). Vehicle has occasionally been running rough, but usually settles down within a few minutes, mostly ran great. What is the next logical step.
2006-10-04 01:59:23 · 8 answers · asked by Paul A 2 in Cars & Transportation ➔ Maintenance & Repairs
fuel coming out of the filter does not always mean yyour pump is working normally, you need 60 psi to the TBI injector modual. Also the injector itself may be bad.
2006-10-04 02:37:43 · answer #1 · answered by Thomas S 6 · 1⤊ 0⤋
There is a fuse on GM models for the fuel injection on throttle body vehicles (TBI). Check your fuses and replace the blown fuse! Your problem will be solved! I'm assuming that is a replacement engine because 97's are fuel injected TPI! That's a whole nother ball game!
2006-10-04 09:06:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It seems that your injectors are not firing. Use a 12 volt test light to check for voltage in the injector wires. If the light blinks while turning the engine over, they are OK. If not , it's either a ground problem or the PCM is on the blink.
Also be sure to check the injector fuse.
Hope this helps.
Master tech 40 yrs.
2006-10-04 09:13:21 · answer #3 · answered by Cal 5 · 0⤊ 0⤋
try the TPS sensor which is throttle position sensor,or maybe the crank sensor,the crank sensor located bottom of crank,tps sensor located on throttle body,had same problem,wasted alot of money for no reason,these parts run any where from $80-120.
hope this will help u with ur problem,if 1 of these are not it , i would like to know myself what u figured out
2006-10-04 13:44:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
well i'm a mechanic and i have no answer for you sorry.. but if you find one let me know.. i have a 97 jimmy also and it died on me the other day and i can get it started but then it dies also.. the fuel pump was my first guess but i tested it and it is working fine also thank god it about 359. dollars to replace.. so now my wife don't have a car to drive while im at work..well email me if you find a answer..cottoncandie1969@yahoo.com
2006-10-04 09:06:00 · answer #5 · answered by cottoncandie1969 2 · 0⤊ 0⤋
Get a fuel pressure gauge on there and make sure there is ENOUGH pressure. Those vortechs need like 50 plus lbs of pressure to blow those poppet valves open.
2006-10-04 09:12:37 · answer #6 · answered by done wrenching 7 · 1⤊ 0⤋
many new Gm car and truck use the antithef system ,they disable injector if they do not see right signal from ignition key .This trick work some time with car have antithef system ,if your truck have antithef .Turn ignition key on ,and leave it on for about 10 minutes then crank it see if it run.Good luck.
2006-10-04 09:32:14 · answer #7 · answered by hutran 1 · 0⤊ 0⤋
your next would be fuel regulator valve. this is what opens to let fuel go to your throttle body.
2006-10-06 20:15:51 · answer #8 · answered by duc602 7 · 0⤊ 0⤋