I have owned this Blazer for 12 months and in the last 3 months it's taken
to cutting out on me while driving.
There seems to be no pattern (hot or cold, idling or running at 60mph) it'll
just lose power. If it's idling it'll die, but
will restart with no problem or a couple of extra seconds holding the
The scariest part is running down the interstate at speed. The dashboard
dials all drop to zero (as if the ignition had
been turned off) then within a second it fires back up and the dials return
to normal. The 'Airbag' light flashes for a
few seconds too. Steering loses power and brakes don't feel good when I've
had this happen while slowing for traffic lights. Fortunately, it started
back up again before I reached the car infront.
I've left the vehicle with a local garage for a few days, but they couldn't
recreate the problem. I don't really have the
time or money to go without a car for weeks on end and this problem can
happen once a month or several times in
day! After the problem occurs, everything seems normal. I have no warning
The fuel pump is chief suspect, but my garage don't want to run me up a
large bill putting new parts in until they are
sure what the problem is.
Has anybody out there come across this problem before?
I don't know if any of this is applicable to a '97 but I've had this
type of problem twice in a '90 5.7 and both times the source couldn't be
located until the part failed. The first time it was the ICM
(distributor module) and the second time it was a fuel injector. Rich B
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~
I had an '88 Chevy 5.7 with a problem nearly exactly like you describe.
There was a TSB that indicated a bad voltage regulator was the problem.
Changed the alternator and the problem went away. HTH.
Well, I just had my Blazer in to Tuffy for a tuneup.
They replaced plugs/wires/distributer cap, and changed my oil.
I called them up and the guy said to bring it back this evening and they'd
get it back in first thing tomorrow morning.
Since I'm already into this project some $460 so far (sounded steep, but I
didn't have the time to do it), he's going to waive any additional
diagnostic fees, which is good, since I didn't want to have to get upset
about it. It did need the plugs and wires, etc.. so I'm not going to gripe
Any other ideas?
Since the check engine light isn't on, it's got them a bit confused too.
Just after I posted my previous reply I saw the posting from
Andy M. from April 26, (97 Blazer dies at random) . Same problem by the
sounds of it. It may be worth chasing up that avenue too.
Well, my wife called me at work this afternoon to tell me the car stalled
again while she was out shopping.
I called over to Tuffy and told the guy that it had stalled again. He and I
are both stumped. I'm going to take it back on Tuesday and let them do some
Keep me posted if you find any info.
I checked the battery terminals. They looked pretty good. Took a wire brush
and went over them a few times, but there really wasn't any corrosion to
It's been harder to start latey, if that helps in a diagnosis.
I haven't taken it back to Tuffy because I don't have any more cash to throw
at it for the time being. If I can figure out what is causing it, I can
probably fix it myself. If only there were codes in the computer to point
me in some direction.
I won't be able to clean my battery terminals for a week or
so (out of town), but a quick look
showed up some visible corrosion on the outside......check inside the red
rubber cover that covers the
positive leads leaving the battery....I squeezed mine and loads of white
crud came out!
You're right about the starting becoming a bit more difficult too..... the
dashboard light 'Service Engine Soon'
seems to be noticeable when starting, which again points to ignition
problems --- I'd bet it's your battery
When it's been running fine for a while I notice the odd occasion when it
takes that second or two extra to
fire up (and also a second or two for the dashboard to light up when the key
is turned)....sure enough,
it's up to it's tricks very soon after.
Is there any chance this might be connected to the ignition switch on the
steering column? Would a worn swtich cause these problems? Ocasionally the
blazer will refuse to let go of the key. When it does this, the ignition
switch won't allow us to turn the key back all the way into the off position
to release the key. I figured this was just related to the lock cylinder,
not the actual switch components inside.
Well I finally got around to cleaning the battery lead connector.
Absolutely furred up with corrosion. I got it really clean and reconnected
to the battery......
.....STILL got the stalling problem!
Now to work out a Plan B.
I'm thinking the same thing.....I'm going to take speak to my local
garage this week and see what a new ignition
switch will cost. :-/ I'm pretty sure it's electrical because it just
goes dead and when it comes back there's no
hesitation to start (I'd expect it to be difficult to start again if there
was a fuel supply problem).
I'll post my findings...that way we both won't be pouring all our money into
this problem :-))))
By the way NW....I 'Just' saw your response from 5/26 about the ignition
Going to have to chat with somebody more knowledgeable than myself (not
I too am having the same issue (when the power seems to die for more than a
the ignition switch won't let me turn back to the original position and
remove the key.
When I first cleaned the battery lead up and reconnected it, I had some
based grease that I covered everything in. It mustn't have been very
the car wouldn't even start and the ignition switch did exactly what you
Although there was enough power there to keep interior lights on, etc... the
mustn't have been good enough to start the engine. I just 'clicked' and the
went off. After a few seconds the lights on the dashboard reappeared (as if
a switch had reset?).
I removed the battery lead and took the grease off the parts that made the
BINGO....engine started first time.
Had the engine cut out on me today.....just went dead as I pulled up to the
Radio continued playing and I put the hazard lights on to warn the cars
So I still had power in those parts of the system, but the dashboard lights
took 5 or 10
seconds to reset. Engine started fine - again >:-|
I'd need to look at a wiring diagram to be sure...but I know it's not all
the power that's
dropping out...just the engine being affected...It may be the ignition
switch, but I don't
know if there could be a relay somewhere that could be the culprit.
Watch out Chevy dealers in Colorado....I'm going to be bothering you ;-)
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