harry yarnell Posted December 5, 2016 Share Posted December 5, 2016 Driving the '88 the other day, and suddenly it just died at 30 mph. As the car drifted, it restarted. Ran for about 100 yards and died again. The restart was off and on for the next 1/2 mile til it refused to start. Cranked just fine. Rollback was there in 10 minutes and it was back to the garage. Hit it with some ether and it sputtered. Thinking fuel issues. Later in the day it fired up like nothing was wrong. Let it idle for an hour. Nothing wrong. Drove it 5 miles today and nothing wrong. Thinking fuel pump, but this behavior doesn't seem typical; or is it? Thinking also the fuel pump relay, but isn't the relay bypassed by a set of contacts in the oil pressure switch? I'm going out now to do some troubleshooting, but I HATE intermittents... Link to comment Share on other sites More sharing options...
harry yarnell Posted December 5, 2016 Author Share Posted December 5, 2016 CPS? Crankshaft position sensor or central power supply? Both have the same acronym. Yes, the crankshaft pos sensor is a great suspect; why didn't I think of that sooner. Link to comment Share on other sites More sharing options...
2seater Posted December 5, 2016 Share Posted December 5, 2016 It does sound like the way my Crank Sensor failed also. Off and on stutter while driving, then failure to start, and later ran as if nothing wrong. What shape is the coil pack and module in? Fuel pressure easy to check with a gauge. Link to comment Share on other sites More sharing options...
harry yarnell Posted December 6, 2016 Author Share Posted December 6, 2016 Well the CPS was replaced and a 20 mile test was uneventfull. Hopefully that was the problem. CPS failures are sneaky. Installing a CPS requires a good eye for alignment. I cut off the end flap of the box the new CPS came in; bend it into a U shape and stick it in the outer slot of the CPS as a shim. Aligning the vanes on the HB with the gap in the folded shim, I achieve proper alignment. Tighten the clamp screw and remove the HB and shim; reinstall the HB and check alignment again. Usually it's spot on. Link to comment Share on other sites More sharing options...
padgett Posted December 7, 2016 Share Posted December 7, 2016 AFAIR if a CPS (crank etc) fails, the tach will drop to zero & may bounce before. Link to comment Share on other sites More sharing options...
DAVES89 Posted December 7, 2016 Share Posted December 7, 2016 I went to park the Black for the summer [it is my winter Reatta] and that fall when I went to get it out it wouldn't start. It was the Crank Sensor that broke at just that time. It truly was a "Ran when parked" situation... Link to comment Share on other sites More sharing options...
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