96 z a4

driving down the highway last week the car just dies. will try to kick over but motor will not fire. car has fuel pressure 44 psi roughly when trying to start, has spark,and has full electrical power. any ideas? thank you in advance for your help!

btw,car is stone stock

 

Have you look at the mass air

 

no i have not. forgot to add car had no codes store either. will the mass air cause this? thanks for your response

 

Check your coil wire and the wiring harness going to the optispark itself. Its likely one of those are worn out.

 

My buddys car did the same thing and it was the mass air,but the opti will cause this to

 

cool,will do that. thanks

 

i'm brand new to the lt1. i was told that if i have spark i have no need to worry about the opti(makes sense to me) the spark seems strong also. could i be wrong?

 

I don't think it could be the mass I can unplug my mass and my car starts fine unless obd2 is different

 

ignition control module.......mine went out and did the exact same thing. normally about 75 dollars or so from the parts store. and make sure you use the gel that comes with it. keep us updated.

 

No this is incorrect, If the MAF sensor was good the car can start with it conected or disconnected, if it is bad it may cause starting/runing issues when connected but when you disconnect it the computer will start and run in a crappy preset SD mode. It's another limp home failsafe that GM put into these cars...

To the original poster; to rule out airflow issues, disconect the plug on the MAF sensor and see if it starts. If it does then check the intake tubing between the sensor and the TB because I have seen a leak there pull air in that is not measured and cause the same symptoms you described, and more then likely isf your car is unmolested they MAF didn't just go out. Check the basics first before throwing money at it by replacing parts...

 

thanks guys,i'm going to try all this today! i'll keep you posted with my results!

 

This man knows hip hop.

Narrow it down before you spend any money on replacing new parts. I learned this the hard way.

Because it didn't throw a code, I am having a hard time believing it is the MAF. Take my advice and check your ignition coil wire -- mine was so worn out it would actually pop off while I was on the interstate, and the car would basically die at 80mph and I'd have to coast it off to the shoulder. A lot of the time if it is the factory coil wire, it is pretty worn out and the boot itself doesn't sit on the ignition coil correctly.

 

today when i go to work on it i have zero spark. i check for voltage at the coil it was at 10.98v but no spark from coil. i replaced it with a new delco coil but still have no spark at the coil. so i but on athor delco coil,still no spark! wtf?

 

Like I said earlier. Couple things to check.

Ignition Coil Wire.

Wiring Harness going to the opti along the passenger side of the intake manifold (and down by the water pump)

Ignition Control Module (ICM)

 

i checked everything else but the icm,guess thats next!

thanks for your help officer

 

my opti went bad even though it had spark but it just didnt have enough spark. Spark may be to weak.

 

i got a good used icm to try out tommorow. i hope it works!

 

well it was the icm! thanks for your help. but now i have bigger problems,cyl 7 is shooting water from the exhaust. guess its time for some afr's

 

my opit is bad and the car starts still, with my 96' if the intake elbow is not properly sealed it will stall your car out, whats wierd is that the 94 keeps running. It could look fine from the top side sometimes these will get torn on the underside.