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Won't start after replacing the temp sending unit (to computer)

Tiny
REGVOKES951
  • MEMBER
  • 1991 VOLVO 740
  • 2.3L
  • 4 CYL
  • TURBO
  • RWD
  • AUTOMATIC
  • 111,000 MILES
It started and when I went to drive off, it stalled. Tried to start a couple of times and did once but when it did, it ran rough and would not rev when given gas. Now I have a 144 code. It seemed to have a weak spark (yellow color spark). I'm thinking the spark should be a blue color and snap when plug wire is placed close to the engine block?
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Thursday, May 28th, 2015 AT 12:56 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

We need to start at the basics such as compression and fuel pressure to see where the failure lies, please check this article and do some test, I'll be here waiting your results, then we can go from there, please follow this link,

https://www.2carpros.com/articles/car-cranks-but-wont-start

The 144 Fuel system load signal (missing or defective) sounds like it could be the pump or relay not working, please test and report back :-)

Best, Ken

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Thursday, May 28th, 2015 AT 9:02 PM

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