91 Lumina sedan - Car Troubleshooting


	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

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 ...

2020 suburban new transmission and issues after install

recently had the transmission fail at 11...

91 Lumina sedan

Sign up here!

Email This Post

Auto Repair Home>> Automotive Repair>> Car Troubleshooting

mikeatpriestlake
User

Mar 1, 2014, 7:52 PM

Post #1 of 3 (1541 views)

91 Lumina sedan	Sign In

Ok gang, got a real stumper here! I have a 91 chevy Lumina 3.1 V6. It starts and runs, but after a few minutes it dies. It will start right back up again and go, but we cant trust it. It has had a new crank sensor, new coil pac and icm, It is throwing no codes. It has 151000K miles. It had a new idle air control at 129000, a full tuneup, new map sensor, new injectors at 121000. it has had a recent fuel filter, and also when it was acting up, (when the problems first started, it would run rough before it died), we tested the fuel pressure at the rail and had 40 -41 lbs. engine analyzer shows nothing. any help would be greatly appreciated. thanks, Mike.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 1, 2014, 8:20 PM

Post #2 of 3 (1532 views)

Re: 91 Lumina sedan	Sign In

The only way that you are going to find this problem is that you have to first determine which function is dropping out in the split second before the engine dies, whether it be spark, fuel pressure or injector pulse. One or more of those is dropping out and causing the stall. That's what you have to determine and that won'e be real easy. You have to be monitoring these things at the moment it dies.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Mar 1, 2014, 11:40 PM

Post #3 of 3 (1512 views)

Re: 91 Lumina sedan	Sign In

I got a feeling your going to need to take it to a repair shop that has a technician with a DSO lab scope. The DSO is great at finding glitches as long as they are checking the right circuits.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Mar 1, 2014, 11:40 PM)

Email This Post

Search for (options) Privacy Sitemap