Question about 1998 Pontiac Sunfire

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How to know if its the fuel injectors thats wrong with my car?

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I would run injection cleaner through the car with a tank of gas first and then go from their.....Old spark plugs can also give u the same problem...Hope this helps.

Posted on Sep 12, 2010


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1 Answer

Getting it to start

Not only that, we need to know what's happening or not happening.

With what little you've given us, here are the possibilities.

Battery, battery wires, battery clamps, alternator, alternator fuse, regulator, starter, seized engine, lifters, crankshaft, camshaft, timing belt, timing chain, spark plugs, plug wires, distributor, fuel, fuel filter, fuel pump, fuel pump fuse, fuel injectors, fuel injector fuse, fuel injector relay, wrong key, key chip, key chip reading system, ignition switch, ignition switch relays, ignition switch fuses, multiple computers, in wrong gear, clutch not pressed, and I'm sure I missed a dozen more.

Sep 08, 2016 | Cars & Trucks

1 Answer

87 olds cutlass ciera 2.5 4 cylinder cranks no start the fuel injector not spraying but if I put gas in carb it starts but then dies anyone know whats wrong

I'd have to use a gage and check proper fuel pressure. Also, I'd have to check fuel injector pulse. The fuel injector needs voltage and ground.
If the computer doesn't see rpm signal, it won't ground the fuel injector. Sometimes the ignition module is at fault? There could be other issues? I hate to see you replace anything w/o testing.

Feb 01, 2016 | Cars & Trucks

1 Answer

Have starting trobel do ihave lines on wrong

That's hard to say from here, I know it will take some time for the fuel to pressurize the injector system before it will start, does the system have a bleeder valve located on the injector lines? Have you checked the fuel filter and fuel pump and fuel pump fuses? Why did you change all these parts to begin with? Did you check the owner manual for a fuel pump shut off emergency switch? I hope one or some of these suggestions help, it's hard to answer your question without knowing more about the problem!

Mar 27, 2014 | 1996 Dodge Ram 3500 Club Cab

1 Answer

I do not know where fuel injector relay is located

99vit what country, all vits vary by country, not stating country
makes my response and most other wrong, see that?
what engine, there are many. world wide, welcome to www.
All Suz, ecu cut fuel if the ECU thinks, spark is bad
even when spark is 100% good.
did you use a scan tool and pull all DTCs and post them
after cranking for 5 seconds. the ecu does report cranking errors.
let it.
all fuses good.
is fuel pressure at 30psi?
does the NOID lamp check fail at all injectors?

Feb 04, 2013 | 1999 Suzuki Vitara

1 Answer

No injector polse

A Chilton book will have the schematic for your car. Start at the injectors and track back to the source. It may be the ignition switch, the computer, or some control module. The wires all all color coded. It may just be a connection that needs refreshing and cleaning.
If you can get a code reader, that may tell you what's wrong.
When you say you have fuel, I presume that means you know the fuel pump is working. Usually you can hear a short hum when you turn on the switch. When pressure builds up, it turns off.

Mar 16, 2012 | 1997 Honda CR-V

1 Answer

06 Hyundai Azera error code p0300, car ran rough at first then ok , check engine came on, Dealer put fuel injector cleaner in it. had problem a year ago and dealer said problem was accellerator pedal...

P0300 is a random misfire detected, and it would cause me to do a good tuneup-clean the throttle body, air filter, fuel filter, plugs, plug wires (if it has them), oil change (just because)-fuel injector cleaner is voodoo and the dealer proved that he did not know what was wrong when he did that in my opinion-while there is nothing wrong with throwing in a bottle of injector cleaner once in a while, it is NOT going to fix a misfire problem-that is probably an ignition issue that may be confounded by a bad fuel filter/air filter or leaking injector o-ring.

Jan 24, 2011 | Hyundai Azera Cars & Trucks

1 Answer

Car isnt starting. Getting fuel and spark. just changed the crank sensor. Still nothing. What is wrong?

need to know model year and what engine you have as well as the fault codes you had that made you decide to change the crank sensor? u can't be getting fuel and spark and not have the engine start unless the engine is out of time (defective timing chain) or the fuel injectors are not delivering fuel to the cylinders,u can test the fuel injectors for proper operation by use of a $5 tool called a NOID light, it plugs into the injector electrical connector and blinks when the engine is cranked.

Aug 01, 2010 | Ford Taurus Cars & Trucks

1 Answer

89 ford f150 in-line 6 cylinder. i have replaced a few injectors both fuel pumps and filter. idles like a dream. when i hit the gas it studders but doesn't die. need more info ask. any ideas?

This is for a 1989 Ford F150 In-Line 6-Cylinder (4.9L) wrongly posted by the Asker under a 1986 Ford Mustang....

Fuel Injector Pressure Regulator. Look it up on line at any of the reputable auto parts websites to get an idea what it looks like.
There should be a Rubber Vacuum Line coming from this (the Regulator is located on the Fuel Line prior to the Fuel Injectors) to the Intake. Take this Line OFF. If there is gas in that line = The Fuel Injector Pressure Regulator diaphram is broken and the Fuel is being dumped into the Intake and NOT being advanced onto the Fuel Injectors; and the Regulator must be replaced.
Let me know if this helped.

Apr 01, 2010 | 1986 Ford Mustang

1 Answer

I have a mercedes 2.5 td when i step on the gas it loses power, i have changed fuel filter but no different

It can be faulty glow plugs (replace), clogged fuel injectors (fuel injector cleaner), warn distributor cap/wiring (check/replace), fuel pump circuit, also might be wrong ignition timing.
Please kindly let me know if you need more info
Good Luck

Feb 21, 2009 | 1997 Mercedes-Benz C-Class

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