ok i have a problem i cant figure out. 2002 sle has intermittent problem where the car won't go over 45 mph and on occasion it wont go over 10 mph. it does surge when idling. i have fixed and replaced.
couple vacuum leaks and sprayed intake with carb cleaner.
check fuel pressure 44 pounds and pulled off vacuum went to 54 pounds
replaced mass air flow
replaced cps
codes are o2 sensor bank one
wont go over 45 mph
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pepper65251
- SLE Member
- Posts: 53
- Joined: Sat Feb 13, 2016 10:34 pm
- Year and Trim: 2002 pontiac bonneville sle
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peter
- SLE Member
- Posts: 68
- Joined: Sat May 04, 2013 2:17 pm
- Year and Trim: 01 SSEI (black)
00 SSEI (green)
Re: wont go over 45 mph
You need a scan tool to see what your upstream o2 sensor is doing. If it's reading an incorrect voltage, then your fuel mixture will be too lean or too rich. The vehicle will run poorly if the upstream o2 is malfunctioning.
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nos4blood70
- Certified Bonneville Nut
- Posts: 9522
- Joined: Mon May 10, 2010 6:11 pm
- Year and Trim: 2003 SLE
- Location: Chicago, IL
Re: wont go over 45 mph
Any codes?
-Car Guy Carl
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
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pepper65251
- SLE Member
- Posts: 53
- Joined: Sat Feb 13, 2016 10:34 pm
- Year and Trim: 2002 pontiac bonneville sle
Re: wont go over 45 mph
I forgot i had changed both 02 sensors about a month ago. i have a spare bonneville for parts i pulled the 02 sensor off of it and problem went away. i guess the new 02 sensor was bad. my scanner is a piece of crap so i found a mac mentor scout at the pawn shop for cheap.
Re: wont go over 45 mph
What are the brands of parts you are using?
Here is a list of recommended brands. http://www.pontiacbonnevilleclub.com/fo ... 16991.html
Here is a list of recommended brands. http://www.pontiacbonnevilleclub.com/fo ... 16991.html