Question about 2003 Cadillac Seville
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Posted on Jan 02, 2017
get someone to rev the car and see if the exhaust note sounds muffled!!! i.e blocked or bent if it sounds normal chech fuel pressure and more importantly fuel flow the guy with air flow meter was proberbly right
regards ray w QLD OZ
Posted on Apr 06, 2009
Your going to have to get the ECM scanned, Auto Zone scan's for free and most garage now will scan for $10.00 to $15.00 since they all have the scanners now and need the business.
You could have a Vehicle Velocity Sensor (V V S) going bad or the wire harness it self. The V.V.S tells the ECM how fast the drive shaft is rotating and calculate's what gear it should be in relative with the engine speed and throttle position, and transmission fluid pressure.
Regardless you need the Blazer scanned to pin point why your transmission is shifting the way it is. Could be as simple as time for transmission oil and filter change for $125.00 or a loose wire harness.
Check your transmission fluid and try not to run the blazer to hard, to replace the transmission start at $1,900.00 for a rebuilt.
Good luck and hope this helps. Keep me posted
Posted on May 26, 2009
FIrst have you tried giving the engine a tune up (ie replaced the spark plugs)
Also you need to check the condition of all the vacumn lines on the engine loss of vacumn can cause poor idling.
Posted on Aug 16, 2009
how many miles are on it? if you have over 70k the head bolts may have let loose and allowed the head gaskets to leak they all do it
Posted on Nov 30, 2009
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