Car starts,runs for a second then quits. Fuel pump has been checked,its good. Was told could be a crank sensaor,or a cam sensor?

what does pulse mean, scope or NOid test lamp dead on injector
or the injector tips do now spray when engine is cranked
we can not see you doing the tests and matters.


symptoms. my guess African car, and no engine told, gas/petrol not told
sizes in CC or liters. 4cylinders? (roller cam sure)
2006 is GEN 3.
wiki says it is
1,297 cc and 1,597 cc Rocam (Roller Finger Camshaft)
1.3 or 1.6L which one? SOHC
Brazilian-designed Rocam engine is of single overhead-cam configuration with two valves per cylinder.

dead engine, cranks fast right but engine is dead, will not start or stay running.
won't start with quick start spray works, but will not stay running,
seems it has spark (spray works and sounds good)
starts but will not RUN, (spray lasts for 3 seconds)

so is the cam belt ignored and now slipped (if has belt, no books here)
all fuses, good
scan the PCM for DTC error test

the PCM cuts fuel (injectors) for many reasons, for sure to not catch fire.
1: all fused checked for good in all fuses boxes. as in ALL.
2:no real engine told or country told so folks can help with more exact answers
causes, injection dead ( but PCM fires them with electrical pulse)
top cause fuel pressure not to spec,
the crack a line dribble tests are no good. if dry yes but dribble tests mean zero.
the PSI (BAR)_ pressure must be at spec to the fuel rail.

that is one answser, now lets to , injector all 4 pins have no electrical pulse using noid test lamp or scope see the super fast pulse there, 5mS (0.005 seconds)
that cause is, PCM sees spark dead even if spark is good
the PCM seens throttle by wire dead if present, (no books in USA for bantam)
PCM sees CMP or CKP sensor errors, cam or crank sensors.
PCM sees IMMO failing (security key if has it)

now answer 3.
the engine compression is not 150psi and up tested. 10Bar up, not less.
on all 4 cylinder, and near even.

EGR stuck open
CAT core melted and now engine can not pump air, or run.
lots of test to do .
but I bet fuel pressure is wrong, at the rail 30psi up. for most cars
I have no PSI spec, 2bar up. fuel pressure. not zero not 1. but 2 up.

ever see the truck run perfect before, or not in 10 years?
C2500 right not k2500 ,pickup.
NO ENGINE told ,4 engines 3 gas 1diesel.
but is gas so 4 engine not told (no fun there, blind)
4.7 to 5.7L and 5.4L gas.
crankshaft and cam forgot to say sensor?
CAB means distrib CAP .
rotor sure.
why not new SPARK PLUGS first and for sure those ratty old HV spark wire, useless, I run NGK mag wires.

battery good, cranks fast and engine spins fast and does not start.
and engine compression is good
and we test that spark is good on all 8 cylinders not just one,all 8 are test
and also tested for spark timing. for sure if distributor was removed, or set loose at base and timing lost.

if all that is good the engine now runs on spray test fuel in a can. for 3 seconds, even with fuel pump fuse pulled.
if you get this far,
we check fuel pressure next and even for bad fuel.
no history of car told
bad fuel ,old rusty tanks wreck injectors.
26 year old truck,.

things bad that old are, all fluids and belts
fuel filter packed in gunk and rust.
thermostat bad.
spark parts bad, cap/rotor wire sets x8 and spark plugs. (or timed wrong or put back wrong firing order)
injectors clogged, bad fuel or rust in the tank
bad FPR, bad map sensor.(or only clogged)
or bad fuel pump if pressure is low and FPR not bad.

most of my tests all take tools and meters
a tech can not fix cars lacking his tools.
and skills to use them./
even a timing light is needed on all distrb cars
and all EFI cars a fuel pressure gauge.
and compression gauge
and vacuum gauge.

Hi,

Please check your alternator. If it's not working as usual, your car would stop as you're describing. It works with engine to give your car constant power. Problem shouldn't be starter as you wouldn't be able to start your car if that was the issue. Thank you.

Sounds like your fuel pump in on it's way.

Could be the fuel pump or pump relay going bad.To check relay simply replace it with another.It also could be the crank sensor or cam sensor.

What you are telling me is the engine is firing the plugs but not getting fuel.
When you changed the fuel pump and filter, did you check the fuel pressure at the rail ?
Are the injectors getting power and ground pulse ??

First check where your fuel pump relay is then check it or have it checked to make sure it works proper. Then check all fuses in the auto to make sure all are good. If after all this checks ou and still no fuel pump sound from the tank if you stick you head close to the tank the pump can be heard. If you do hear a pump running this could be a sign your fuel filter needs changed it is clogged up. if no sound pull the fuel pump and supply 12V power to it on the ground away from the car and gas tank and after it has properly drained of fuel and dried. If this pump works on the ground you may look at your cam sensor. If while you are cranking your car and you see the rpm gauge move this means the cam sensor is reading if you see no movement at all change the cam sensor. Often when the cam sensor goes you may as well change the crank sensor as well to prevent repeating the down time of your car later on down the road.

fuel pump is in the fuel tank

check the asd relay swap it with another like it. also check fuses and old car alarm if it had one.the cam and crank sensor will not affect fuel pressure. the cam sensor should not stop this car from starting. but the crank sensor will. good luck.