Won't Start now

[SHOTUNES]

Cranks but will not start up and stay running. Key on can hear fuel pump crank even with pedal down and sputters and stalls. No start. Not sure where to look. Thanks for thoughts where to look. 93 auto.

 

[luigisho]

first guess is crank sensor but you need to check the codes. this will show you how to check them yourself. Use a paperclip or jumper wire and count the flashes on the dash. I think 3 digit codes on the '93
https://web.archive.org/web/20080617184612mp_/http://www.shophoenixproject.com/eec/eec.htm

 

[sperold]

Fog in some quick start and try to start it. If no start, you have an electrical issue.

 

[BaySHO Performance]

Yes, 3 digit codes. Another source on how to do it:

http://wiki.wikisho.com/wiki/EEC_Self_Test_Procedure

 

[SHOTUNES]

Disconnected battery check codes and only get 111. Also checked had fuel at rail. Not sure how I can get it to start and stay running. Had issue last summer and pulled super chip out as it was loose causing all kind of starting issues. Ran fine for awhile. Cats may be clogged had some exhaust leaks fixed not sure if this caused any of this.

 

[rubydist]

pull a couple plugs - are they wet or dry?

 

[BaySHO Performance]

Unfortunately disconnecting the battery cleared any stored codes, which is why you got 111. When you try to start it, does the tach move? What did you do to the car between it running fine and not running? Have you checked for spark?

 

[Kziemer]

ANY engine needs 3 basic things to run.
Compression
Ignition
Fuel source

Start with the easy first. A couple shots of ether in the intake and see if it will run for a second or two.
Pull a spark wire and get a little tester that clamps to ground. Crank and see if you have spark
Usually its one of those 2 things and youll find out where to start. Going from there is the easy part

 

[SHOTUNES]

I had some exhaust leaks fixed before she broke down. Could clogged cats keep her from running? I have a Borla SS exhaust and high flow Y-pipe from FPS installed 17 yrs old.

 

[SHOTUNES]

Ok I cut off converters and now she runs again. They were destroyed. But now the exhaust has a weird back flow. It pulls air back in every couple of revolutions Something maybe stuck in engine valve or something. This thing did have a 60k tune up. Not sure what’s wrong now.

 

[BaySHO Performance]

I have had quite a number of cases where a cat has blown. The cat material is in two separate halves.

If the back half goes, a piece of the material can get stuck in the cat back and create enormous back pressure because the gases have difficulty escaping. That robs the engine of a lot of power. In one case my 550HP track car was down 80HP per my G-Tech/Pro. The suddenly there was a big ****, a cloud of black smoke came out, and I got all my power back. Another case is an ATX I'm currently working on where the power came back without the ****.

If the front half goes, material can get sucked back into the engine and score the cylinder walls beyond repair. I had to replace the short block in a client car because of that. Oversized piston rings are not available, so the cylinder walls couldn't be resurfaced.

Sounds like the former in your case, which is good news. I use a drain snake from a hardware store to run it down the cat back to see where the blockage is. I can go all the way back to the LH muffler with it. In some cases the drain snake will break up the blockage, But in one case it wouldn't, so I marked the outside of the exhaust where the snake stopped, and had a muffler shop cut it open to remove the blockage.

 

[SHOTUNES]

Drove it home slowly. Sounds bad lot of rattling plus very rough idle. Good thing i did see a check engine light pop up. Maybe i can pull it and see what it says.