oldmanche Posted May 28, 2022 Share Posted May 28, 2022 I parked the truck a few months ago. It's a 1988 Chief. It ran OK when I parked it. Underpowered and occasional fast idle but always started right up and moved down the road.. The plan was to do some diagnostics (compression and leak down) to see just how wore out the motor is and continue on the ground refresh and vacuum line diagnostics/replacement. Truck has about 300k on it but PO said it had been rebuilt but I doubt it. Last night I tried to start it - crank but no start. Battery was not great so I charged it overnight and have the same condition this morning. Used quick start - easy way to rule out fuel as the issue. Pulled a plug and I'm not getting spark. Given it always started great when I parked it a few months ago, I'm looking to see what others think are the most likely issues I should be looking at. Link to comment Share on other sites More sharing options...
fiatslug87 Posted May 28, 2022 Share Posted May 28, 2022 Check the CPS. Link to comment Share on other sites More sharing options...
oldmanche Posted May 28, 2022 Author Share Posted May 28, 2022 Honey due yardwork - probably will be Monday by the time I'm set free Link to comment Share on other sites More sharing options...
cruiser54 Posted May 29, 2022 Share Posted May 29, 2022 Unplug the cPS and plug it back in and try it. Link to comment Share on other sites More sharing options...
oldmanche Posted May 30, 2022 Author Share Posted May 30, 2022 Thanks. Hopefully I can try to unplug and plug tomorrow. If that does not work I guess I’ll test it. Link to comment Share on other sites More sharing options...
oldmanche Posted June 17, 2022 Author Share Posted June 17, 2022 Finally got off hard labor detail and back to the truck. Cleaned the C101 and also checked CPS output, thus unplugging it and plugging it back in. Was putting out somewhere between .3 and .4. CPS connections looked clean so I did nothing but plug it back in and she started right up. Thanks guys. It had a very high idle - over 2,000 RPM so I immediately shut it down. Got the REM hooked up and it looked like the IAC was really open. Unplugged the relays and RPM at start up dropped to only about 1,500 the slowly fell. After starting a few times it went back to "normal" but when cold idle is low. I'm guessing I'm ok since everything looked ok on the REM I think. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 17, 2022 Share Posted June 17, 2022 Tip 27 may be in your future..... If you wanna be lazy, you can bypass the C101 with the CPS wires. Link to comment Share on other sites More sharing options...
oldmanche Posted June 17, 2022 Author Share Posted June 17, 2022 Thanks. Was planning on skipping the C101 cleaning and go straight to the bypass but life has had other plans for my time. If I can’t get to it soon I will do the two CPS wires. Smal amount of time to save a ton later stuck on a trail. Link to comment Share on other sites More sharing options...
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