runs but shuts off - Truck Repair Advice


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

2006 Toyoto Camry XLE Driver Side Electric Window Trouble

Hello, Looking for a little brain help ...

Tierod end change caused some kind of leak

Hello so I just took my car to the nearb...

2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes

When I bought this car in summer 2023, a...

Grounding Cable, 2017 Jeep Renegade Trailhawk

The Cable that connects my negative batt...

Rough Idle (Found new thing)

Hi everyone. First of all sorry for bad ...

equipment

hey yall. im a first year engineering st...

HELP

I have a 1956 1/2 ton panel truck, 69 35...

Howdy

    Just wanted to s...

ABS/Tractiob/Brake Lights on But No DTCs

Hello all, Recently while driving m...

Chevy strut replacement

I'm trying to get a sensor of some kind ...

runs but shuts off

Sign up here!

Email This Post

Auto Repair Home>> Truck Repair>> Truck Repair Advice

tripple d
New User

Apr 10, 2011, 10:00 PM

Post #1 of 5 (2553 views)

runs but shuts off	Sign In

i have a 1987 chevy 4wd truck 5.7 engine 38000 miles...it started blowing the ecm fuse and found and fixed that problem now but then it started acting stupid i can crank it when the map sensor is unhooked but hook the sensor up it shut off befor the vaccum line gets on all the way.i have replaced the sensor,the computer and i am at a loss on it all the codes it throws is the map sensor

(This post was edited by tripple d on Apr 10, 2011, 10:02 PM)

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 11, 2011, 12:31 AM

Post #2 of 5 (2539 views)

Re: runs but shuts off	Sign In

codes are not a certain item but the area of a problem. This may have problems with wiring connections/integrity or the vacuum source,

T

tripple d
New User

Apr 11, 2011, 6:47 AM

Post #3 of 5 (2522 views)

Re: runs but shuts off	Sign In

i have had the wireing harness stretched out on my kitchen table and have been double checking all connections every time i mess with the truck

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 11, 2011, 7:30 AM

Post #4 of 5 (2518 views)

Re: runs but shuts off	Sign In

Connection might look good and not be? Can you continuity check from the end to see if they would allow current to pass thru?

Hate to do it but there's a chance insulation of wire looks good but wire broke inside. If you feel a weak spot especially heading for the MAP sensor you can test using sharp tiny pins for continuity. Making even pin pricks is wiring works but you should seal the prick hole even so small it invites corrosion,

T

tripple d
New User

Apr 11, 2011, 5:59 PM

Post #5 of 5 (2507 views)

Re: runs but shuts off	Sign In

after i got off work today i went and tested every connection in the harness and everything has power at the connections

Email This Post

Search for (options) Privacy Sitemap