Hey everyone, I just joined here and I love it so far. I've learned a lot from lurking but I want to start this thread to document my issues and to get advice.
1993 LX 5.0 T5 127,500 miles, all stock except exhaust, 70mm BBK TB, 70mm spacer, BBK fenderwell intake, MAC shorties, no cats, MSD coil
I bought the car a month ago on a wet day. Drove fine on the test drive and the ride home, besides a slight off idle bog that I knew about already. After having it about a week, it started shutting off randomly while I was driving. It would always restart, but only if I cycled the key. I figured it was the PIP so i ordered up a reman distributor which included a new TFI module, cap, rotor, etc.
I installed the distributor, new FRPP wires, new Motorcraft plugs. Then cleaned the MAF, IAC, and TB. The previous owner had put on a new IAC and TPS not too long ago. It wasnt until now that I realized that the SPOUT connector was missing. Set the timing to 14 BTDC and got a new SPOUT from Ford. I then set the idle to about 700 with the IAC unplugged, adjusted the TPS, reset the computer, etc. All of this solved the random cutting out problem. I also had to do a steering rack, not that it affects any of this. I checked running fuel pressure: 33-34 at idle, bumps up to 43-44 when you crack the throttle. This was with the vacuum still connected though, I didn't realize I had to disconnect it. The fuel filter looks new as well.
I drove it around all night, it rained a little but not too much. The next morning its raining pretty hard and the car would just crank and wouldn't start. i didn't have time or another set of hands to help me diagnose, but the coil was getting juice with the key on, the coil tested out OK, and continuity from the coil to the cap was good. The cap and rotor were also dry. The fuel pump comes on with the key as well.
***EDIT Also check the salt and pepper connectors. They were clean and had dielectric grease in there.
After I set the idle and TPS etc, I started getting a surge problem. I flipped the IAC over but that made my idle about 1200. I dropped the idle with the TB to about 800 and the surge is still gone. I'm not sure I go back down to 700 if the surge will stay away but - that will be another day.
This is pretty much where I am now, besides getting a MAF code and swapping it out to a SN95 MAF. It was raining yesterday and I tried to start it, so I will have to pull codes tonight and see if anything has changed.
Also when I unplug the IAC the idle drops, unplug the ECT it gets rough, and unplug the MAF it gets rough. There doesn't seem to be any vacuum leaks anywhere.
The car will not start even after I wash it on a dry day.
Last thing - if it is a wet morning (dew, etc) it may start but it will run rough
My Saturday to-do list:
1. Check EGR valve to see if it's stuck.
2. Install new 2.5" O/R Hpipe with brand new O2s, and Flowmaster cat back
3. Install new ACCEL cap and rotor (not sure if I trust the crap parts store one)
4. Wet down engine and see if it misses/shuts off, check for spark and injector pulsing.
5. Unplug SPOUT and try to start.
6. Replace fuel filter.
7. 84.5" belt, eliminate smog pump
8. Check EEC for any water/moisture
Did I miss anything? Anything else to try?
Thanks!
1993 LX 5.0 T5 127,500 miles, all stock except exhaust, 70mm BBK TB, 70mm spacer, BBK fenderwell intake, MAC shorties, no cats, MSD coil
I bought the car a month ago on a wet day. Drove fine on the test drive and the ride home, besides a slight off idle bog that I knew about already. After having it about a week, it started shutting off randomly while I was driving. It would always restart, but only if I cycled the key. I figured it was the PIP so i ordered up a reman distributor which included a new TFI module, cap, rotor, etc.
I installed the distributor, new FRPP wires, new Motorcraft plugs. Then cleaned the MAF, IAC, and TB. The previous owner had put on a new IAC and TPS not too long ago. It wasnt until now that I realized that the SPOUT connector was missing. Set the timing to 14 BTDC and got a new SPOUT from Ford. I then set the idle to about 700 with the IAC unplugged, adjusted the TPS, reset the computer, etc. All of this solved the random cutting out problem. I also had to do a steering rack, not that it affects any of this. I checked running fuel pressure: 33-34 at idle, bumps up to 43-44 when you crack the throttle. This was with the vacuum still connected though, I didn't realize I had to disconnect it. The fuel filter looks new as well.
I drove it around all night, it rained a little but not too much. The next morning its raining pretty hard and the car would just crank and wouldn't start. i didn't have time or another set of hands to help me diagnose, but the coil was getting juice with the key on, the coil tested out OK, and continuity from the coil to the cap was good. The cap and rotor were also dry. The fuel pump comes on with the key as well.
***EDIT Also check the salt and pepper connectors. They were clean and had dielectric grease in there.
After I set the idle and TPS etc, I started getting a surge problem. I flipped the IAC over but that made my idle about 1200. I dropped the idle with the TB to about 800 and the surge is still gone. I'm not sure I go back down to 700 if the surge will stay away but - that will be another day.
This is pretty much where I am now, besides getting a MAF code and swapping it out to a SN95 MAF. It was raining yesterday and I tried to start it, so I will have to pull codes tonight and see if anything has changed.
Also when I unplug the IAC the idle drops, unplug the ECT it gets rough, and unplug the MAF it gets rough. There doesn't seem to be any vacuum leaks anywhere.
The car will not start even after I wash it on a dry day.
Last thing - if it is a wet morning (dew, etc) it may start but it will run rough
My Saturday to-do list:
1. Check EGR valve to see if it's stuck.
2. Install new 2.5" O/R Hpipe with brand new O2s, and Flowmaster cat back
3. Install new ACCEL cap and rotor (not sure if I trust the crap parts store one)
4. Wet down engine and see if it misses/shuts off, check for spark and injector pulsing.
5. Unplug SPOUT and try to start.
6. Replace fuel filter.
7. 84.5" belt, eliminate smog pump
8. Check EEC for any water/moisture
Did I miss anything? Anything else to try?
Thanks!