Car turns over but won't start

[Dsmj89]

Last night my car was fine and started right up with no problems.
I was reading up on probable causes and came up with the 3 most probable reasons based on what i know and checked is fine on my car.
1 - spark plugs
2 - bad fuel pump
3 - ecu

My car inside doesn't smell bad at all whatsoever, could a ecu be bad and not smell bad ?
Any other ideas guys ?
My coil pack is good as well as my cas.

I haven't checked out my fuses so i will go do that now while i wait for repsonses.

I was wondering if a stock fuel pump could go bad cause of age as well ? Thanks

 

[92AWDHX40]

Take the ecu and inspect it, no starts also do you have compression, spark, fuel. Those are some signs of no starts.

 

[Dsmj89]

I have compression and spark, not sure about fuel, i'm low on gas but the gas light hasn't come on yet and the way im parked is also at an unleveled way, think that could also be playing a role ?

 

[GsxEcutioner]

Same thing happening to me, I replaced my fuel pump, I replaced mpi, and I replaced spark plugs and wires, and it started up with a Acid burned ecu, but won't start with my EPROM, try using another ecu and see if it starts.
-Shane

 

[Dsmj89]

I was also thinking ecu. Will try that out. Thanks.

 

[VIDEOSHOOTER]

sometimes the ecu can go bad without smell on outside open it up and take a whiff

 

[Dsmj89]

I will do that tomorrow for sure since i'm free tomorrow. I hope it's the ecu as i have a friend who has a 96 ecu i can temporarily use.

Also can a old 15 year old fuel pump just die without any last minute ill effects ? Just had a thought..

 

[GsxEcutioner]

Here's how mine went, I rechecked my EPROM yesterday and the chip wasn't fully attached to the board, and even when I fixed it, the car wouldn't start, so I unplugged the resistor from the coil packs cleaned it off and reconnected it and it cranked no problem, I am however off half a tooth in timing.
-Shane

 

[Dsmj89]

Well today i checked out a few things.
I am getting fuel up to my fuel rail.
Also i am getting spark on all 4 cylinders so spark isn't a problem.

 

[Dsmj89]

Update :

Took the car to the mechanic today, he re-checked everything i did and i am getting spark and fuel for sure, also scanned for codes and nothing, and my timing is perfect.
With that out the way, the fun part came, did the compression check, you guys take a gasp, came in as follows :
cylinders 1 & 2 made a hair under 30 psi
cylinders 3 & 4 made under 10 psi !

So umm yeah what do you guys think of this ?

I don't understand how from one night to a morning this happens ?

 

[steve]

With that out the way, the fun part came, did the compression check, you guys take a gasp, came in as follows :

cylinders 1 & 2 made a hair under 30 psi
cylinders 3 & 4 made under 10 psi !

So umm yeah what do you guys think of this ?

I don't understand how from one night to a morning this happens ?

Timing belt jumped/failed, all it takes is cranking the engine if the belt is old, the auto-tensioner fails, or the tensioner pulley moves. Other causes are balance shaft belt failing and getting between the timing belt and crank sprocket, if you don't have all the belt covers on any foreign object can cause the failure.

2G ECU's don't usually smell like fish when they fail. Either burnt (driver chips) or nothing (vaporized sensor ground).

 

[Dsmj89]

Can't be timing belt or balance shaft belt failure as i just replaced these 2 things about 3 months ago along with all new pulleys and water pump, the whole timing belt job was done, and today at the mechanic timing was dead on when we checked it, so it's not that.
I have no other guesses other than a bad head gasket.
Anyone else ?

 

[josh38127]

just an eclipse so i am kinda new at dsm. my car a similer problem a new tps cured my car

 

[95redturboawd]

Is it cranking at the same speed or does it get slower with time like it's a bad battery? Also, doesn't really seem like this would be your problem, but this just happened to me and my fuel system was fine, turned out the spark plug wires weren't in all the way in the coil pack.

 

[Dsmj89]

It turns over at normal speed the whole time.
Spark plug cables and all is fine. It has to be the HG... Blah this blows.

Anyone else have any other guesses ?

 

[2GAWD4U2NV]

I'm having a similar problem...except mine hasn't cranked for a few months. I have been through the a fore mentioned troubleshoots: compression, fuel, spark. The only thing I have not checked is the coolant temp sensor. I plan on doing that tomorrow.

Yes, I took the time, today actually, to pull the belts and crank pulley to check my crank angle sensor. For what it's worth, it seemed to check out. The wires were hidden and tucked into their place on the front case plate and cleared all the way up near the intake manifold. HOWEVER.... the disk that spins to trigger the crank angle sensor is worn and even to the point that it is grooved and you can hang your fingernail on it. Problem?

How it happened: I was driving through town and my car shuts off on me in front of Wal-Mart. I know right, of all places it's one of the busiest. I had been having problems with once I clutched it, I would have to "tap" the throttle to keep the car alive. If I did not, the car would not catch and idle with the clutch depressed. Throttle was necessary for operation.

Keep in mind: I am on a fresh build with around 535 driven miles on the engine. Built with 750hp capable internals. Doubt it's mechanical failure. New tranny parts, turbo, etc. Everything is NEW. FACTORY SETTINGS!! 450cc injectors

Symptoms: The car will simply just spin over and over but won't start. It will have the occasional hit and almost start and then will die out again.
---Occasionally it seems as if the starter is disengaging so hard it will just spin (NOT GRIND) away from the flywheel. I'll wait a second and try to crank again and then it will just turn the engine over and over.

My timing marks are perfect and I mean PERFECT! (can/will supply a pic upon request)

Upon installation of my clutch-cut wire, within days my cruise control stopped working. Has the clutch-cut wire shorted out the clutch solenoid sending faulty message to ECU that clutch isn't engaged/disengaged?

I have checked the cam angle sensor and replaced it. I was receiving a cam angle sensor circuit malfunction prior to checking the CAS. However, I have yet to pull that code again since my 1500th attempt to get it running.

I had a log of attempting to crank, but silly me clicked stream instead of capture...damn. Oh well. I'll log one tomorrow, if it will help any.
---What's timing supposed to be at crank? Mine reads 5 deg and 4.6 degs when it "hits" the most.



Any updates?