Question about 1994 Cadillac Eldorado

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Cadillac got sparks going to the plugs fuel pump is working. but the car wont turn on. but what i notice when i got the key on the on position the service engine light doesnt turn on. it should turn on to let u know the computer is fine. i have got it started a few imes n it works fine for a month but the service engine light never goes off its always on. but the car is working fine until it decides to mess up on its own n i mess with it checking everything from computer n prom. n fuelpump n ignition module. and all of the sodden the car decides to work again . but know it doesnt want to turn on again.

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  • 306 Answers

How's the compression? Timing chains? Crankshaft sensor?

Posted on Apr 30, 2010

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4 Answers

WONT START HAS A NEW FUEL PUMP BATTERY IS GOOD


Is there spark coming from plugs . Electronic ignition? Check fuse box for blown fuses .
Pull a wire out from spark plug and place it near the plug. Start engine while someone else watches if there is spark going ( do not handle wire when doing this ) if new pump it has to be primed before use .

Mar 24, 2015 | 2000 GMC Jimmy

1 Answer

95 buick wont start


Got fuel? Sounds crazy but you'd be surprised how many times I have poured a gallon of gasoline into someones car to get it to start.

No start condition is the most frustrating problem. More information on what happens when you turn the key would help......but basicaly you need 4 things to make a car start. Fuel. Air. Spark. Timing. Fuel, Air, Spark and Timing are needed to start/run. Asked about fuel, but is the fuel getting to the cylinder? Do you have fuel pressure at the fuel rail(s)? When you turn the key to the "On" or "Run" position, do you hear a whining sound coming from the rear (fuel tank area)? That is your fuel pump priming the system. No sound? Check fuses and relays associated with the fuel system. Air. You need air to the cylinder to make it start and run. Check your air intake and filter. Really clogged and dirty filter? Pull it out and try to start. No go? Put it back (change ASAP) and look for Spark. Spark includes battery. Are there any loose connections to/from your battery? Really corroded terminals? Clean and tighten the connections. Try to start. No go? Pull the spark plug wire off an easily accessible spark plug (grasp the "boot" as close to the plug as possible and wiggle back and forth easily while pulling - these boots and wire connectors are fairly delicate). Remove the spark plug (be careful and dont break it or cross thread it when putting back in) and pop the wire back on it and set the plug on top of your engine (away from the spark plug hole). Have someone try to start the engine. You should see the spark plug fire its tiny bright blue spark. If not, you have found your problem. The problem is likely a bad coil, bad coil wire, distributor cap, rotor or a combination of these. If you have spark, then it has come down to timing. There are lots of things that affect timing in modern cars. There are a couple of sensors that jump out - Crankshaft and Camshaft position sensors. These will generally quit working while driving and you will likely notice the problem beforehand with it running really rough and getting crappy mileage, and the check engine light will come on and give you all kinds of hints. IF you turn the key and nothing happens, it might be a broken timing belt, but again, those usually fail under working conditions. It is possible (rare) the timing belt slipped/broke when you last shut off the engine, but I would point at the other 3 things first (Fuel, Air & Spark). Hope this helps. Good luck.

Apr 22, 2014 | 1995 Buick LeSabre

1 Answer

Engine wont start even with jump


Got fuel? Sounds crazy but you'd be surprised how many times I have poured a gallon of gasoline into someones car to get it to start.

No start condition is the most frustrating problem. More information on what happens when you turn the key would help......but basicaly you need 4 things to make a car start. Fuel. Air. Spark. Timing. - oops - 5 things - A key! Sure you are using right key? Had a couple once who had matching chevys and they swapped their keys and didn't know it. The key has a chip in it and only works on that car. Crazy, but the keys fit and turned in both cars. (Almost matching serial numbers? never figured that one out). Anyway, sorry. Fuel, Air, Spark and Timing are needed to start/run. Asked about fuel, but is the fuel getting to the cylinder? Do you have fuel pressure at the fuel rail(s)? When you turn the key to the "On" or "Run" position, do you hear a whining sound coming from the rear (fuel tank area)? That is your fuel pump priming the system. No sound? Check fuses and relays associated with the fuel system. Air. You need air to the cylinder to make it start and run. Check your air intake and filter. Really clogged and dirty filter? Pull it out and try to start. No go? Put it back (change ASAP) and look for Spark. Spark includes battery. Are there any loose connections to/from your battery? Really corroded terminals? Clean and tighten the connections. Try to start. No go? Pull the spark plug wire off an easily accessible spark plug (grasp the "boot" as close to the plug as possible and wiggle back and forth easily while pulling - these boots and wire connectors are fairly delicate). Remove the spark plug (be careful and dont break it or cross thread it when putting back in) and pop the wire back on it and set the plug on top of your engine (away from the spark plug hole). Have someone try to start the engine. You should see the spark plug fire its tiny bright blue spark. If not, you have found your problem. The problem is likely a bad coil, bad coil wire, distributor cap, rotor or a combination of these. If you have spark, then it has come down to timing. There are lots of things that affect timing in modern cars. There are a couple of sensors that jump out - Crankshaft and Camshaft position sensors. These will generally quit working while driving and you will likely notice the problem beforehand with it running really rough and getting crappy mileage, and the check engine light will come on and give you all kinds of hints. IF you turn the key and nothing happens, it might be a broken timing belt, but again, those usually fail under working conditions. It is possible (rare) the timing belt slipped/broke when you last shut off the engine, but I would point at the other 3 things first (Fuel, Air & Spark). Hope this helps. Good luck.

Apr 21, 2014 | 1998 Mazda MPV

2 Answers

2003 gmc savanna, fuel pump wont work, installed new punp and ignition cylinder, turns over but wont start. I put the key to on position and let it sit for 15 min and still wont start


Check pwr to pump with test light while somebody turns key on and off, if pwr check ground from pump to frame, if no pwr check fuel pump relay

Nov 03, 2013 | 1999 Cadillac Eldorado

1 Answer

2004 grand am stuttered then stopped working all together, wont start at all


Fuel pump? When you turn key to ON, do you hear the pump come on for 2 seconds to pressurize the lines? If not, you will need to have the fuel pump circuit checked for a failed fuel pump.

If the pump is working, start looking into the ignition system by checking for spark on one of the spark plug wires. If no spark, possibly the ignition control module or the crank position sensor.

Sep 30, 2013 | 2004 Pontiac Grand Am

1 Answer

My car runs great, but when i turn it off and try to drive it again in a minutes it wont start .i have to let it set for a while before it will start again


crank position sensor, camshaft position sensor or an injector with too many ohms resistance. when you turn the key to the on position you should hear the fuel pump come on for a few seconds. if not suspect fuel pump relay or fuel pump

you will need to determine if it's a no spark issue or a no fuel issue.

When the car wont start spray some carb cleaner or starter fluid into the intake and try to start. if it does start and run for a few second then the problem is with the ignition side

check for spark by removing a spark plug lead from a spark plug and putting a good spark plug in the wire, use a jumper cable and clamp one end to the spark pug thread and the other to battery ground. Turn the engine over and you should see spark.

is the check engine light on? if so get the computer scanned, autozone will do it for free

Oct 10, 2010 | 1986 Buick LeSabre

1 Answer

Wont turn over I turn the key and it sounds like im out of gas.


So your engine cranks, you have plenty of fuel, but your car won't start? Before you go and pull spark plugs or injectors to see if we have that kind of problem, you should check for a bad fuel pump or dirty fuel filter. To check to see that your fuel pump is working as its supposed to, turn the key to the ON position (don't try to start it yet.) This is the point in which your fuel pump should begin to pressurize. Please report back once you have done this so we can move along.

Jul 14, 2010 | 1994 Lincoln Town Car

1 Answer

2002 blazer crank but wont start


2 things that you have to check on no starts every time. Spark at spark plug and fuel. Turn key to run position and listen at gas tank for fuel pump to run you should hear a whining noise. This will only happen for 3 to 4 seconds then it will shut off until engine starts. You can turn key off then to run every 3 to 4 to listen for fuel pump. You may hear the relay click off in engine area even if pump does not run. Fuel pump failure is pretty common. If pump is running pull spark plug out or put a spare plug into spark plug wire and have someone crank engine set plug on engine and watch for spark. This will give you a starting point. Hope it helps.

Mar 30, 2010 | 2002 Chevrolet Blazer

2 Answers

My 96 blazer wont start it just cranks but wont start?


A typical engine needs mostly just gas and spark to run (besides air of course)
Sounds like the engine is not getting one or the other.

Fuel goes from fuel pump, to filter, to fuel pressure regulator, to fuel rail, to injectors.
You can test for fuel pressure with key on, at the fuel rail. There will be a test port on the rail that you can put a rag on top and push in the valve to see if there is pressure. (or use pressure tester)
If there is no pressure, check that fuel pump relay is working. (you can use an ohmmeter on relay to see if there is resistance). You can also test power to relay and to the pump with a voltmeter to see if pump is getting power. Or turn key to ON position and listen to see if you hear the pump turn on.

If you have no spark to any cylcinders, the crank shaft position sensor may be faulty which is very common in GM vehicles.

You can use an ohmmeter to test the sensor itself.
You can also get a spark plug tester to see if there is spark to each cylinder.
You can also remove one spark plug, plug back into plug wire, lay on top of engine so spark plug diode is 1/4" away from metal surface. Have someone else turn engine over while you look for spark. Do this to each cylinder.

Nov 16, 2009 | 1996 Chevrolet Blazer

1 Answer

It justs turns over but wont start


Are you using the correct key? The key must be programmed for the car.

Is the fuel pump working? Remove gas cap, have some-one put ignition on and listen for motor sound in tank. If not, car won't start.

There are only 3 things the engine needs to run; fuel, spark and compression.

Check you are getting a spark at the plugs.

Aug 10, 2009 | 2000 Cadillac Catera

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