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06-22-2017, 12:47 PM
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#1 |
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F’B’D guy
 
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Can't find the info that says what that means, any help?
Thanks |
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06-22-2017, 12:59 PM
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#2 |
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Registered User
Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Are you sure there isn't a delay in there somewhere? What is the exact sequence that you see?
__________________
87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4 |
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06-22-2017, 01:20 PM
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#3 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
After I jump it I get the 1 blink (check engine light) then 2 rapid ones for 3 times. Then it goes to 4 rapid blinks, stops then repeats 4 rapid blinks. 44 trouble code?
Think it's possible my cat is restricted ? The truck is factory original, 18,000 original miles. Last edited by 57NAPCO; 06-22-2017 at 01:42 PM. |
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06-22-2017, 01:43 PM
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#4 |
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Registered User
Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Sounds like code 44 which is lean condition. Check for exhaust leaks, bad O2 sensor, plugged fuel filter. Mine was a plugged fuel filter.
__________________
87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4 |
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06-22-2017, 01:53 PM
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#5 | |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Quote:
I changed the fuel filter, think I'll go ahead and buy an O2 sensor and try that. |
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06-22-2017, 06:10 PM
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#6 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Is it possible I don't have a O2 sensor ? I just put the truck on the lift and I don't see one any where on the exhaust pipe or on any one of the 3 muffler/cat converters. Could it be on the exhaust manifold ? Jeez...
This truck has the optional 15,000lb GCW option. Maybe it didn't have one? |
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06-22-2017, 06:12 PM
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#7 |
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Registered User
Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Mine was on the back of the driver's side exhaust manifold.
__________________
87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4 |
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06-22-2017, 06:18 PM
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#8 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
There it is, thanks!
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06-22-2017, 07:20 PM
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#9 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Finally got that *#~¥€er out, doesn't look bad but I'll replace it, not that I could tell if it was bad or good ...hah!
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06-22-2017, 08:46 PM
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#10 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Well...same thing, O2 sensor did not do anything. I suspect the fuel pump but I always thought they either worked or not. It's hard to start sometimes, it will fire up and be rough idle and die, sometime it won't start at all and then later it will. It surges when I get it running and drive down the road and the ck engine light comes on. Couldn't find any vacuume leaks. Has new plugs.
Dang.... |
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06-23-2017, 01:35 AM
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#11 |
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Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,247
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Also check fuel pressure.
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
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06-23-2017, 07:42 AM
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#12 | |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Quote:
 Thanks |
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06-23-2017, 08:41 AM
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#13 |
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Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,369
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
I would think code 44 would be 4 long blinks and 4 short blinks. I think you may have a code 4, whatever that is.
__________________
76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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06-23-2017, 09:31 AM
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#14 | |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,227
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Re: 1988 V30 trouble codes, jumpered A&B and I get 4 flashes after the 1-2
Quote:
On a side note, I'm trying to head on up to South Portland,ME for the summer, can't get out of this heat fast enough |
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