Chevy C1500 5.7L...Bad ECU???? - Pirate4x4.Com : 4x4 and Off-Road Forum

BajaTacoma · 05-22-2009, 08:41 PM

Hello, I have a 1998 chevy c1500 with the 5.7L motor...I have 3 CE lights.... p340 p440 and p102... the p102 is a MAF code...i cleaned the MAF but did nothing...I bought a new maf from kragen but the code is still on...Now someone told me that i might have a bad ECU...do these things go bad??? when i clear the code with my scanner the MAF p102 comes right back on...

any help??

Odin K30 · 05-23-2009, 05:34 AM

Sounds like a wiring problem to me.
Get yourself a service manual and follow the troubleshooting flowchart.

MrWillys · 05-23-2009, 06:46 AM

Is there a MAF relay in the circuit?

05-22-2009, 08:41 PM	#1 (permalink)
BajaTacoma Registered User Join Date: Jul 2007 Member # 95813 Location: san diego Posts: 87	Chevy C1500 5.7L...Bad ECU???? Hello, I have a 1998 chevy c1500 with the 5.7L motor...I have 3 CE lights.... p340 p440 and p102... the p102 is a MAF code...i cleaned the MAF but did nothing...I bought a new maf from kragen but the code is still on...Now someone told me that i might have a bad ECU...do these things go bad??? when i clear the code with my scanner the MAF p102 comes right back on... any help??

05-23-2009, 05:34 AM	#2 (permalink)
Odin K30 Bad Doctor Join Date: Feb 2007 Member # 86878 Location: South of Heaven Posts: 2,475	Sounds like a wiring problem to me. Get yourself a service manual and follow the troubleshooting flowchart. __________________ -Vinny -from Elizabeth Nobody cares about your rigs specs... "Me too" short Crew build /forum/chevy/994394-odins-me-too-short-crew-build.html

05-23-2009, 06:46 AM	#3 (permalink)
MrWillys Registered User Join Date: Feb 2002 Member # 9991 Location: Cold Springs, NV Posts: 2,369	Is there a MAF relay in the circuit? __________________ [url]www.scotthansen.net[/url]

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