91 plus wont start. HELP

[SHO SPD]

well last night upon pulling in my driveway the car stalled, didnt think anything of it. one hour later i go out to start it up and take off. but no start. i check all connections around battery, grounds, and starter. So i run codes and got 14-Ignition pickup was erratic-ignitoin systems, and 22-MAP (vacum) or BARO signal out of range. so hat could it be. crank pos sensor was just replaced. could it be a possible computer issue, or a new DIS module. please anyone help me.

 

[qiksho]

I believe that there is a Fuse under the hood that could be your culprit. I know steve (projectsho89) has talked about this in other threads. I am sure if you do a search in the main engine/driveline troubleshooting threads you will find something.

 

[SinisterSHO]

Uhm..This isn't the car I just bought on Ebay, is it?

 

[Bizzy]

No fuse under the hood of Gen 1's.

SHO SPD, does the car crank but just won't run? Or will it not crank at all? If it doesn't crank do you hear any clicking noises from the starter solenoid? Give us a few more details to go on.

P.S. Let's start with the simple things before we get into the computer, etc. stuff.

Also, if you turn the headlights to on, do they come on?

 

[SHO SPD]

91 plus wont start. HELP

well sorry to say sinisterSHO but i think it may be, but dont worry, on its way to running again. but thanks for getting in on this bizzy the crank shaft positioning sensor replaced a week ago, and just today the ignition module DIS. replaced but still no start. there is no clicking, starter replaced about 4 months ago with a life time starter. it seems to want to start but something is holding it back. starts as if the battery was low, but not too low. rpms go about to 500-600 while trying to start her. what about the computer? oh and the lights do turn on, and are bright. just a little bit ago upon attemping to start the car some clicking occured. the clicks were coming from the drivers side of the engine, and loud--i think the battery is getting worn down from all the attempted starts. i may be wrong though. i was thinking whould the new crank shaft position sensor that i put in cause this. i gapped it right, but could it move-and cause the no start. what about the coil pack? it seem there is no spark going on.

 

[93SHO'nOFF]

When trying to diagnose no start conditions you should check for three things that every engine needs to run.Fuel, Spark, and Compression.
After knowing which one is missing it will be easier to narrow down what system to look at closer . NO fuel pressure; possible fuel pump,relay ,or even out of gas?(I see it often)NO spark; possible coil pack,ign. module,CKP sensor? NO comp.; possible, jumped,or broken timing belt?Check all the basics before getting into your EEC system. It's alot cheaper for a repair when you KNOW your replacing a failed part,rather than guessing at many parts you think are bad.
Work Smarter Not Harder.

 

[Bizzy]

the crank shaft positioning sensor replaced a week ago, and just today the ignition module DIS. replaced but still no start. there is no clicking, starter replaced about 4 months ago with a life time starter. it seems to want to start but something is holding it back. starts as if the battery was low, but not too low. rpms go about to 500-600 while trying to start her. what about the computer? oh and the lights do turn on, and are bright. just a little bit ago upon attemping to start the car some clicking occured. the clicks were coming from the drivers side of the engine, and loud--i think the battery is getting worn down from all the attempted starts. i may be wrong though. i was thinking whould the new crank shaft position sensor that i put in cause this. i gapped it right, but could it move-and cause the no start. what about the coil pack? it seem there is no spark going on.

Ok, so the car cranks but won't start.

The headlights coming on rules out that the circuits on the fusible link are ok. First thing is to charge the battery up. If you don't have a charger then try to jump the car off another car so you have all the electrical you need for the car to energize the things it needs to start and run. You might want to measure the voltage across the battery terminals to see what it's at and how low it is.

If the car ran since you installed the crankshaft sensor I don't think that the way you measured it would be an issue. Sensors have been known to fail prematurely, but we don't need to go there just yet as it is not likely. (do not read not possible....just not likely at this point since the car has run since it was installed.)

Now, you say the car stalled. Why? Did you just not give it enough gas and it stalled out or did it just die?

As 93SHO'nOFF said, we need to verify spark and fuel. I wouldn't worry about compression just yet. If you have a timing light that would be helpful in checking for even spark. There is a difference between having spark and having even spark. If the DIS goes into failure mode when it's not getting the return signals from the sensors that it needs it has it's own "program" that it runs which won't be the same as when things are operating as they should be. If you get even spark this would eliminate the DIS and the sensors that send signal to it. It would also eliminate problems with the coil pack itself.

Verify that the fuel pump is priming when you turn the key to run. If it is running then check the fuel pressure at the rail. If it's not running then we need to determine why it's not. Whether it be a problem with the pump or otherwise.

Oh, and one more thing. Pull your codes before any of the above. It may lead you to the exact problem with your car.