|
03-20-2018, 10:59 PM
|
#1 |
|
Registered User
Join Date: Apr 2009
Location: dunlow wv
Posts: 435
|
1st start-up on swap
will start then die, will not idol for longer than 10-15 sec. but if I rev it up, say 2500-3000 rpm's runs like a top, motor just setting in truck, no 02 or maf sensors hook up,2000 5.3 thanks for any help
__________________
72,2wd short bed cheyenne,350,350trans,air,tilt,tach,posi 373 gears 70 nova 5.3,350 trans 80 z28 350,350,trans,bought new 03 cat. 06 gmc swb ext cab |
|
|
|
03-21-2018, 08:37 AM
|
#2 |
|
Registered User
Join Date: Jun 2016
Location: American Canyon, CA
Posts: 253
|
Re: 1st start-up on swap
VATS removed in the computer?
|
|
|
|
|
03-21-2018, 09:05 AM
|
#3 | |
|
Registered User
Join Date: Apr 2009
Location: dunlow wv
Posts: 435
|
Re: 1st start-up on swap
Quote:
__________________
72,2wd short bed cheyenne,350,350trans,air,tilt,tach,posi 373 gears 70 nova 5.3,350 trans 80 z28 350,350,trans,bought new 03 cat. 06 gmc swb ext cab |
|
|
|
|
|
03-21-2018, 09:38 AM
|
#4 |
|
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
|
Re: 1st start-up on swap
Vacuum leak? Fuel Pressure?
What codes is it throwing? give us something to work with.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
|
|
|
|
03-21-2018, 10:27 AM
|
#5 |
|
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Re: 1st start-up on swap
Does it run better without the MAF connected? If so, that'd indicate that your measured and actual air amounts are different. That could be air leaks or MAF placement if so.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
|
|
|
|
03-21-2018, 01:56 PM
|
#6 |
|
Registered User
Join Date: Jan 2013
Location: Imperial, MO
Posts: 1,003
|
Re: 1st start-up on swap
Why are you attempting to run it without the MAF and O2 sensors installed and connected?
|
|
|
|
|
03-21-2018, 06:02 PM
|
#7 | |
|
Registered User
Join Date: Apr 2009
Location: dunlow wv
Posts: 435
|
Re: 1st start-up on swap
Quote:
__________________
72,2wd short bed cheyenne,350,350trans,air,tilt,tach,posi 373 gears 70 nova 5.3,350 trans 80 z28 350,350,trans,bought new 03 cat. 06 gmc swb ext cab |
|
|
|
|
|
03-21-2018, 06:09 PM
|
#8 | |
|
Registered User
Join Date: Apr 2009
Location: dunlow wv
Posts: 435
|
Re: 1st start-up on swap
Quote:
__________________
72,2wd short bed cheyenne,350,350trans,air,tilt,tach,posi 373 gears 70 nova 5.3,350 trans 80 z28 350,350,trans,bought new 03 cat. 06 gmc swb ext cab |
|
|
|
|
|
03-21-2018, 06:17 PM
|
#9 | |
|
Registered User
Join Date: Apr 2009
Location: dunlow wv
Posts: 435
|
Re: 1st start-up on swap
Quote:
__________________
72,2wd short bed cheyenne,350,350trans,air,tilt,tach,posi 373 gears 70 nova 5.3,350 trans 80 z28 350,350,trans,bought new 03 cat. 06 gmc swb ext cab |
|
|
|
|
|
03-21-2018, 08:48 PM
|
#10 |
|
Registered User
Join Date: Jan 2013
Location: Imperial, MO
Posts: 1,003
|
Re: 1st start-up on swap
I have a very hard time believing there are no DTC's with the MAF and O2's disconnected. I'd recommend finishing the installation before attempting to run the engine any further. Without the MAF and O2's, the EEC has no reference to calculate load and determine appropriate fueling.
|
|
|
|
 |
| Bookmarks |
| Thread Tools | |
| Display Modes | |
|
|
\\ MY YOUTUBE CHANNEL
Linear Mode
