Question about 2000 Pontiac Grand Prix
I have a 2000 grand prix with the 3.8L, 185,000 miles. It runs great when you drive it for the first time a day but when you shut it off and restart it most of the time the rpm's will bounce. Also when you drive down the road it keeps acting like it going to die and sometimes does at stop lights. I put a scanner on it it comes up as the evap. system. What do i need to change to fix this?
I had this problem and I replaced the mass air flow sensor and it runs great, was told by my mechanic it is a hard problem to diagnose. I just unplugged the maf sensor and the car ran better so i replaced it.
Posted on Oct 21, 2008
The blower motor first started
cutting off for a few seconds and then back on. When the blower would
cut off so would the rear window defogger and air conditioning light as
well as the headlights if the headlights were running on automatic. If
the headlights were manually turned on they would not turn off. You can
hear what sounds like a relay clicking when it cuts off. Replaced the
battery but had no effect, can't find the problem. The problem was
intermittent for a while where it would cut off for 10 - 15 seconds and
back on. The problem has progressed to where on blower speeds 1 - 4
will not work at all, when you place it on any of those speeds, rear
window defogger will cut off as well as the running lights and of
course, no air will blow. Speed position 5 on the blower works as well
as all electrical while on that speed. The key is the blower speed,
it's like something is shorting or not grounded causing perhaps a
protection circuit to cut power?
Posted on Oct 22, 2008
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Posted on Jan 02, 2017
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