This is my daughters vehicle, she is having an intermittent stalling concern with no dtc's stored. Very random, may go 2-300 miles between failures. Usually starts right back up, and is fine for a bit, although it has had a cranks but wont start after dying. Not long enough for anyone to do some accurate testing unfortunately. Had the fuel pump replaced on advice from others, but still has concern. Unfortunately she's not local so I haven't been much help on this one. She reports everything seems normal when it is running. Any advise would be greatly appreciated!
Check your asd relay box. Drivers fender area. Below below tipm. We have corrosion on the bottom of the box in our region
Sounds like a classic crank position sensor issue to me. 1. Use a lab scope to test the Crankshaft Position (CKP) sensor and both Camshaft Position (CMP) Sensors. Compare to known good patterns. 2. Look for a signal that is missing, glitches or dropping out, replace that sensor if the wiring checks OK.
Have seen 3 issues that cause this complaint: - Must have factory cam and crank sensors - PCM board issues. - Fuel pump.
Could be a number of sensors or a relay dropping out. Check your CKP, CMP sensors and ASD Relay or any relay associated with Spark, Fuel and Timing. You will find the issue in time. Be patient and Take Care
If the shop has a scope, test the crank sensor signal very well and look for any gaps that are too wide besides initial trigger gap. Newer designs are placing the trigger on the tail end of the crankshaft. The sensor is accessible, but the trigger requires tranny be removed. Over the phone diagnostics to help a family member can be a mind bender. She needs to find a reputable shop or dealer…
Steven others have already mentioned the ASD relay and I agree with that. Could be ignition switch definitely Crank sensor but let’s have her help us diagnose it. The next time it stalls let’s find out what still works wipers headlights horn turn signals blower motor engine fans exterior lights. Then let’s get her used to the sound the fuel pump makes when you first turn the key on. After she…
Had many stalling issues with this vehicle #1 scope cam / crank sensors. Also had issues w/cam / crank connectors
I agree with some of the other Techs. I would take good look at the CKP sensor.
Thanks to everyone for all the replies, very much appreciated! I'll pass the information along and hopefully have some type of resolution soon.
All good replies…Some additional thoughts: - Replace ASD relay and carefully inspect connections - in this case part is cheaper than labor. - Runs for quite a while…dies…restart good - This one has signiture of a current carrying circuit connection overheat and quick cool down - My mother's Honda had this frustrating symptom for many miles…finally hard fail…ignition switch. Retested…voltage…
Crank sensor and connector 90 percent of the time on this one . Wiggle and tap on crank sensor and connector . Also look for tach jumping high or low on cluster .
I had a similar patriot with same symptoms fall in my lap. I ran it for days with scope on it till one day it died. crank sensor had dropped out. I don't like the parts cannon, but it sure seems to be a common problem on these engines… good luck!
Thanks for the information, crank sensor has been ordered and I'm hoping for the best!