need some help

[Eurotrash727]

Can someone tell me what the orange relay on the far left is? It would be the one closest to the Firewall.I tested the plugs to make sure they were all getting power the far left one did not show power with the test light. My car won't start, Fuel pump isn't getting power but there is power going into the The relay i have a few spare Fuel pump Relays "the dark one correct?" , Iv tried two other fuel pump relays & still no prime or nothing from the pump. I haven't tried to see if its getting spark yet Cause the spark plugs i guess are bigger than 5/8 ones.

I know alot of People Say Check the Crank position sensor, But i read that effects spark.

The car ran When i got it & for a few days, ran fine started fine. It sat for about 2-3 days then i started it & let it idle for about 5 minutes gave it a few revs, let it idle for another minute shut it off. Woke up next day to start it & nothing.

thanks for any input.
James

[phenobarb1]

The first relay (towards the headlight) is the main relay, followed by the fuel pump relay, and then an o2 sensor relay. I think you are on the right track. Try wiggling the main relay, or really just replacing it, and see if this solves your problem. I'd check the CPS at the same time though. Maybe I'm having a brain fart, but I think the main relay relates to the DME and getting spark, while the CPS would be related to activating your fuel pump. Either way, these seem to be the most common starting problems, so you might as well check them both while you're in there.

[jlevie]

phenobarb1 is correct, to a point. The order he described is the original configuration. But the relay sockets just clip into the holder so there is no guarantee that they are still in the factory configuration. You can check the wire colors to see if the relays have been moved around.

The main relay powers the DME and part of the engine management system. It should close when the ignition is switched on. Another clue that the DME is powered up and running is that you should be able to feel the ICV vibrating if the ICV and TPS (and the idle control module on an ETA) are good. But the best test is to check for power at the DME connector (with the back shell off and the DME connected) with a meter or test light.

The fuel pump relay only closes when the DME sees timing data from a rotating engine, which is also required for there to be spark. So after verifying that the DME has power, the next check is to see if there is spark when cranking. No spark would then mean:

No timing data to the engine
No power to the coil
Bad coil

Since you have just gotten car, take a peek into the oil fill hole while the engine is cranking and make sure the cam is turning. A broken timing belt is a possibility.

[Eurotrash727]

yeah i tried to Wiggle it , the dude i bought the car said that the car didn't start & he wiggled it & it started. Then that he just replaced it & it seem to fix it. He gave me a few spare relays i swapped them all out no Prime from any of them.

Ima go get the right socket i need for my plugs & test if it has spark...I hope its not the Dizzy stuff like coil & cap. he just replaced it a few months ago.

[jlevie]

The fuel pump only runs when the DME sees timing data from a rotating engine (didn't I just say that?). It does not prime like later models

[Eurotrash727]

The fuel pump only runs when the DME sees timing data from a rotating engine (didn't I just say that?). It does not prime like later models

yeah i know i was just saying, my bad i haven't checked To make sure everything is rotating. I Work over nights so didn't have time to check it after reading this. Well go home & make sure all the timing stuff is still in contact.

Even though kinda weird for a timing belt to just break while sitting over night, The car ran fine 12 hour prior to it not starting.

[jlevie]

Well it would be a bit unusual for the belt to break just as or after you shout down down the engine, but anything is possible.

[Eurotrash727]

OKay so checked it & everything is rotating, T-Belt is fine as i suspected.
Also i listened to the relay when turning the ignition to on running position & can hear the Main relay click so im guessing that means the Relay is fine. Im about to go to the autopart store & get an extension for the correct socket for the spark plugs so i can check if there is spark.

[Eurotrash727]

Car is getting spark but it was a orange spark, shouldn't the spark be blue ?

[jlevie]

If the engine has spark, the next check is to see what the fuel rail pressure is when cranking.

[Eurotrash727]

still nothing, the car is pumping fuel i checked the line running into the fuel rail, & also should the fpr return line have gas running threw it constantly ?

[jlevie]

If the pump and FPR are working properly, there should be fuel flowing from the FPR back to the tank when the pump is running.

[Eurotrash727]

If the pump and FPR are working properly, there should be fuel flowing from the FPR back to the tank when the pump is running.

Yeah I just didn't let it turn over enough before , I'm stumped...fuel,spark,fresh battery,fresh dizzy n shit.

[Eurotrash727]

Gahhhh I love cars

[SmokeE30]

whats with the buttsplice connectors in you first pic is there any other aftermarket wiring going to anything important, non-stock stuff like that is always what i check first