Fuel pump?????

 

From what I remember, if the crank or cam position sensor was bad, it wouldn't even fire. Is that correct?

If the wires have been chewed through then it won't fire.

 

If the crank sensor was bad it will still crank it just wont fire. I would have thought MAF as well. Battery showing a full charge? Any vacuum leaks. Check all the connection near the airbox. Possibly something may have come loose or off by the intake, even the intake itself.

 

Intake air leak check all clamps connections or a bad maf

 

Some cars have fuel pump switches that turn the fuel pump off in a high inertia/impact event. I don't know if the spyder has this or not but it is always a good idea with injected cars. Speed bump then quits so this is what I would look for.

 

Read the code, it's a P1305 - so if I recall, that's cylinder #2. Connectors to coil packs look good. But not sure why it won't run if it was the only issue.

We put a new MAF in there and same results, so that wasn't it. I will check again, but pretty positive we have good fuel pressure. It fires up, runs for about 2 secs then dies. Each time it will fire and run for a sec. Would it do that with out fuel?

I will go over all the air connections tomorrow to make sure they are sealed.

Saving a air leak somewhere, what other connector could have come loose?

Thanks!!

 

Swap coil pack to different cylinder and see if code moves. Sounds like time for a new coil pack.

 

Will swap a couple this afternoon when I work on it.

Will the car continue to run if you gave it gas? Your issue sounds like a decent vacuum leak.

No, it dies. We've tried revving the idle and it increases, but still dies in 2-3 seconds. I will be checking the air intake/vacuum lines as well.

 

car should stay running on 3 cylinders.

check to see if youre getting spark. take out the coilpacks and spark plugs and ground them on the valvecover. crank it and see if you get spark.

 

Will the car continue to run if you gave it gas?

A similar issue happened on a different car where the idle adjustment screw backed out too much causing too much unmetered air at idle.

Your issue sounds like a decent vacuum leak.

 

Car should fire and run with no MAF, no intake system even. I like to do gross troubleshooting, I'd undo the entire intake and see if you get the same result (but I'm 99.5% sure you will). Then you can eliminate all things intake from the equation.

If the crank sensor were somehow damaged, it would likely not fire at all. Cam sensor - I haven't tried, but it'll likely fire and limp without one (in batch fire mode).

Of the fuel/air/spark triangle, my guess would be fuel. Possible the pump primes but then shuts off?

It is an MT, not an SMT, right?

 

It is an MT, not an SMT, right?

Yes, it is a MT, NOT SMT.

 

I would go with the simplest, cheapest suspect first. I would simply check the grounds. Remove and clean the ground cables. Check the cables at the battery to ensure they didn't come loose, check the grounds to the trans and frame. Make sure they are clean and well fastened. Bad grounds cause all kinds of crazy problems. I seem to recall that someone had this issue a while ago and it was a loose ground cable. Cables always look good until you start poking at them and taking them off. If that doesn't do it then start with the diagnostic troubleshooting sections of the BGB.

 

Check the hose under plastic valve cover going to pcv valve any air leak here can cause idle issues

 

Ok, here's the update after a little more work this evening. Short summary, it's working and purring like a kitten again.



Long summary: after spending time at work digging through various threads online and making a list of things to check from intake, vac lines, ground wires, crushed sensor wires behind AC compressors, etc, etc, etc...the solution was a simple coil pack replacement. I swapped #2 and #1 and the error moved to #1, but still wouldn't run. Swapped them back then #2 and #3 then error was on #3. Replaced the faulty coil pack and fired right up, runs great.



Wanted to post an update and thank everyone for their help. This is still a fantastic owner's community; makes me miss my Spyders! :scrock:

 

Gee, the code really did pinpoint the problem. :icon_wink:

Glad you got it fixed and it wasn't serious