What could be making my Bonneville not run?

Asked by Jul 17, 2016 at 06:14 PM about the 1990 Pontiac Bonneville

Question type: Maintenance & Repair

My Bonneville starts but runs very rich for a few minutes, then seems to get
itself worked out of it, runs good for about 2 minutes and then completely
quits. The only code the computer is saying is for a vacuum leak but I just had
all the intake gaskets replaced and hoses checked. And it does the same cycle
every time you try to start it - runs rich - to being okay - to quitting. So far
we've replaced the battery, intake gaskets, crank sensor, MAF sensor and map
sensor. The fuel pump and alternator were both tested as well. Anyone have
any suggestions as to something we might be overlooking? This has all of us
stumped...

2 Answers

60,295

Bad fuel injector,s.

1 out of 1 people think this is helpful.
59,205

Or a bad fuel pressure regulator. The fuel pressure regulator controls fuel pressure based on a vacuum signal from the intake manifold. There should be a vacuum hose going from the fuel pressure regulator to the intake manifold. Sounds like the vacuum hose is hooked up to throttle body vacuum which is different and will cause the fuel pressure regulator to not work correctly. HTH. -Jim

Your Answer

Add photo

Related Questions

  • 2002 Pontiac Bonneville not cranking 10 answers

    2002 Pontiac Bonneville non-supercharged is not cranking over when in START position. I have had the battery tested and it is good (only a year old). All the lights and gauges and other things even ...

    2002 Pontiac Bonneville SE

    -

    Maintenance & Repair

  • 1995 Bonneville wont start 24 answers

    I have a 95 pontiac bonneville not supercharged 3800 engine. The full pump doesnt come on have lost power windows and door locks and power driver seat. just put a brandnew egnition switch in the car...

    1995 Pontiac Bonneville 4 Dr SE Sedan

    -

    Maintenance & Repair

  • 2001 Bonneville SEI - Making a horrible noise when excellerating 3 answers

    Recently, after driving through a large puddle of water, (in case that matters) my Bonnie is making a lound noise when it reaches about 30 mph. She sounds like an airplane that's going to take off. Do...

    2001 Pontiac Bonneville SSEi

    -

    Maintenance & Repair

  • blower motor 2000 bonneville 1 answer

    My blower motor on my 2000 bonneville is making a loud clicking/rattling noise when running at high speeds. How do I remove it to check what is wrong?

    2000 Pontiac Bonneville SLE

    -

    Maintenance & Repair

  • what engines will fit in my 69 bonneville? 23 answers

    I have a 1969 bonneville with no engine, what size, make, years can I drop in there?

    1969 Pontiac Bonneville

    -

    General

Search Pontiac Bonneville Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Pontiac Bonneville Experts

#1 ticklemedaly
ticklemedaly
Reputation 360
#2 dandyoun
dandyoun
Reputation 340
#3 Js08016
Js08016
Reputation 330
View All

Related Models For Sale

Used Pontiac Grand Prix
21 Great Deals out of 3,715 listings starting at $879
Used Pontiac Firebird
12 Great Deals out of 777 listings starting at $2,300
Used Buick LeSabre
10 Great Deals out of 2,254 listings starting at $1,299
Used Pontiac Grand Am
1,661 listings starting at $1,298
Used Ford Mustang
534 Great Deals out of 42,736 listings starting at $1,699
Used Chevrolet Camaro
401 Great Deals out of 40,631 listings starting at $3,500
Used Buick Regal
150 Great Deals out of 11,598 listings starting at $1,850
Used Nissan Maxima
381 Great Deals out of 24,382 listings starting at $999

Used Cars For Sale

2005 Pontiac Bonneville For Sale
3 Great Deals out of 104 listings starting at $2,495
2004 Pontiac Bonneville For Sale
3 Great Deals out of 64 listings starting at $1,400
2002 Pontiac Bonneville For Sale
83 listings starting at $1,375