coyote121403

So I went out today for another fight with my 91 XJ. I read how to pull the error codes via the check engine light (autozone was less than helpful as they wont do 95 and older cars). I just replaced the coolant temperature sensor. Do I need to reset the comp. somehow since I replaced it? My engine runs a little sluggish, when it gets just over 210 the jeep dies and wont start for about 15 mins. The codes I got were:

27*Injector #(12345 or 6) output driver does not respond properly to the control signal.

54*No fuel sync (camshaft signal) detected during engine cranking
15**No vehicle distance (speed) sensor signal detected during road load conditions
22**Engine coolant temperature sensor input above maximum acceptable voltage.
or
Engine coolant temperature sensor input below minimum acceptable voltage

Howler_GT

If you remove the POS battery cable and touch it to the NEG post this will clear any stored codes.

You know you will at least get rid of ONE code completely.

MAYBE the others will follow suit.

IF not, you have to tackle another one and run through the clearing procedure again.

coyote121403

So I reset the comp. The only error I'm getting now is #27 the injector control signal one. Would a hole in the fuel injector hose cause this? I have a crack in the hose and its leaking gas. Going to run and grab another one, just making sure I shouldn't grab an extra injector or something else while I'm there.

Howler_GT

Sounds like perhaps it is something in the wiring.

Check the connectors and the main injector connector at the back near the firewall.

Pull the main injector connector apart and inspect the contacts inside for dirt or corrosion.

coyote121403

So I got a new hose and put it on. Started it up and still ran sluggish. Reset the computer again and made sure all the injector wires were tight, started it up and presto it runs fine now. I put a 180 thermostat in it for the time being till I figure out the over heating problem. Runs cold on the highway but in the city sits right below 210. I can deal with the couple miles per gallon loss for now. Thanks all for all the help so far.

Work done so far:
Replaced head
Replaced CPS
Replaced thermostat housing
New thermostat
Steering stabilizer
New tires
New stereo
Coolant flush (profesional)
New injector hoses
Rigged fan to bypass A/C
New Coolant Temperature Sensor