Skip to main content
Topic: Check engine  (Read 721 times) previous topic - next topic

Check engine

I have a Check engine light, ISC 8.3 you can clear it it comes back on in a couple of hours. VMSpec shows engine speed abnormal change.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Check engine

Reply #1
Those might be a result of the timing control signal error.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Check engine

Reply #2
I'm thinking cam/crank position sensors/ connections
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Check engine

Reply #3
Watch for RPM changes on the meter with no changes in engine tone.  Maybe clean or change the Crank sensor  and or cam sensor .

Re: Check engine

Reply #4
I'm thinking cam/crank position sensors/ connections
:thumbsup:
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine Beast (AKA Pup)
Columbia, MO
1996 U320 4000
2021 Jeep Gladiator, Diesel

Re: Check engine

Reply #5
Light went out this afternoon. May have gotten moisture in it from driving all day in that flood Monday that moved across Texas Louisiana. We'll see if it stays off.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Check engine

Reply #6
Seams as though the gremlins have left the area 800 miles no more issues! I'm still going to look into the connections. I'm going to jinx myself but the old girl ran good this year Yuma to New Hampshire to Florida to Alabama back to Yuma for the winter.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country