Blazer 1998 runs rough
mpera
11-30-2003, 11:06 AM
Hello,
Since last week i am the proud owner of an Chevrolet Blazer LT 1998 has run 77500 miles. Runs fine, no problems whatsoever.
After an Oil change the engine runs very rough / stumbles and stalls, ticking sound not varying with revs. Check Engine does not lit.
The next day at startup no ticking only rough idling, does not stall, after a few minutes the engine runs smooth. Oil level and pressure is good. Used oil 5w40, this type of oil was also used by the previous owner.
I don't think that the oil change has anything to do with it, i think this is not a mechanical but an electrical or sensor problem.
Has anyone an idea.
Greetings from Holland
Since last week i am the proud owner of an Chevrolet Blazer LT 1998 has run 77500 miles. Runs fine, no problems whatsoever.
After an Oil change the engine runs very rough / stumbles and stalls, ticking sound not varying with revs. Check Engine does not lit.
The next day at startup no ticking only rough idling, does not stall, after a few minutes the engine runs smooth. Oil level and pressure is good. Used oil 5w40, this type of oil was also used by the previous owner.
I don't think that the oil change has anything to do with it, i think this is not a mechanical but an electrical or sensor problem.
Has anyone an idea.
Greetings from Holland
robertb
12-01-2003, 05:01 PM
my owners manual and my mechanic says that 5w30 should be used. I have a 1998 blazer as well.
Your owners manual should say the same thing. 5w40 I believe is a thicker oil, that might explain the rough idling. As the engine gets warm the oil thins out and the engine runs smoother-I think. Run that by your mechanic.
Your owners manual should say the same thing. 5w40 I believe is a thicker oil, that might explain the rough idling. As the engine gets warm the oil thins out and the engine runs smoother-I think. Run that by your mechanic.
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