2000 SAAB 9-5 2000 SAAB 9-5 won't stay running.

Tiny
HANSEN.TYLER.J
  • MEMBER
  • 2000 SAAB 9-5
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
I have a saab 9-5 that won't stay running unless you keep your foot on the accelerator. I can start it but the engine will cut out immediately. It began as I was driving towards walmart the car jolted slightly and I could feel it dying kinda like when your running out of gas, so I hit the accelerator and it kept going. I got it into the walmart parking lot and as I slowed to take a corner the engine died. I coasted to a stop. I tried to turn the car back on and it would go only until I let off the accelerator. A few days later we were able to drive it to my home, about 4 miles, but still the engine would die if not given gas. Any help would be greatly appreciated. I'm sorry I don't have more to donate but this is my primary mode of transport and I need a quick helpful answer.
Tuesday, October 12th, 2010 AT 11:09 AM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi hansen. Tyler.J, Welcome to 2carpros and TY for the donation.

Check and test the mass airflow sensor, manifold absolute pressure sensor and the throttle body actuator unit-try cleaning the MAF sensor with an electronic cleaner CRC and see if it works
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Tuesday, October 12th, 2010 AT 11:44 AM
Tiny
MNTHNY4
  • MECHANIC
  • 612 POSTS
Hey what's up Hansen tyler.J, just a addition to Rasmataz comments, is your check engine light on, if so what r the codes, if no codes, check your fuel pump function, sounds like u have a pump going bad get it pressure tested, u can also do this just purchase a fuel pressure gauge from your local auto store, test port is located in the middle of the fuel injector rail , test & post back with results, good luck
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Tuesday, October 12th, 2010 AT 7:12 PM
Tiny
HANSEN.TYLER.J
  • MEMBER
  • 3 POSTS
Thank you both I will check my pumps and my sensors. Mnthny4 before this incident occasionally the exclamation point inside of a triangle would appear, the car would stutter and the dash's gear indicator(p, r, n, d, etc) would only show I was in park aside from the shutter it would drive fine when this happened either way I decided to check my codes and it said that the either the throttle position sensor was malfunctioning, could this be connected. When I attempted to google it I could not find anything. Thank you
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Tuesday, October 12th, 2010 AT 7:54 PM
Tiny
MNTHNY4
  • MECHANIC
  • 612 POSTS
Yes it could be, u have a bad throttle body, unit been in limp mode, ok, check where accelerator cable is connected to throttle body, if the section that looks like spocket wheel moves with the section that the cable is attach to, meaning if everything in that area move with cable movement then your throttle body is in LIMP MODE , and u will need to replace part, but first clear codes before u start car after replacement of throttle body, good luck.
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Tuesday, October 12th, 2010 AT 8:10 PM
Tiny
HANSEN.TYLER.J
  • MEMBER
  • 3 POSTS
Ok so I checked the throttle body unit, and it was in limp home mode. However, I sent the part to a re-manufacturer and he returned the item and my money because the part was fine. Having cruised through some other forums I'm pretty sure the limp home mode is the cause of most of my symptoms, but if the throttle body is fine then why did it go to limp home mode? Most of the components connected to the engine are still detached, so if there is something else to fix I want to do it before I finish reassembly. Thank you all so much.
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Sunday, January 23rd, 2011 AT 4:15 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What was the MAF sensor test result, when you checked it?
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Wednesday, February 2nd, 2011 AT 5:17 PM

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