Question about 2002 Mercury Sable
While driving the engine "skips", the speedometer spikes upward - at idle it jumps to about 25 mph - and there is an audible pop through the radio as well audible alternator "whine" through radio just before and after "pop". Sometimes the Security light or the Low Fuel light comes on, sometimes not. but NO check engine light illumination thus far. frequency of occurance of problem is increasing daily.
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
SOURCE: 1997 Mercury Sable GS
Two possible sensors could be affecting it like the TPS or MAF sensor. The Throttle Position Sensor (TPS) might have a bad spot where the ECM won't get signal properly and causes the RPM to fluctuate
Posted on Aug 14, 2008
SOURCE: rpm`s spike up and down
I don't wanna laugh but the Vibration of the defrost is probaly wiggling a connection --most likely a harness ground on the engine bay firewall ---I'd check the grounds then the throttle position sensor connector connection and then the --Don't laugh distributor connections to inlude the engine to cab ground cable ---braided bare cable from the block to the firewall -
--the COIL pack may have a poor connection ---and I believe if correct on blazers the feed wire to the coil from the harness
is thick and pinkish that connection if loose describes the symptoms exactly
nothing works without a sufficient GOOD gound --loosen and retighten and ground wires-positive wires and connections ----GM is well known for wiring harness problems ---my 84 blazer
happened to share the same ground for the Blower motor and the distributor ---not anymore!
check your connections and those grounds --am I repeating myself ---and also continue to seek help in here if still persisting after that ---should only take 15 minutes to check it all
30 to fix most likely
hope this helps
Posted on Apr 06, 2009
You describe this as an acceleration problem however, if the car does throw a check engine light it should be recorded in system memory so it can be pulled by scanning with and OBDII scanner. It sounds as if the car is being starved for fuel on acceleration. Check the fuel lines for kinks as well as check the fuel pressure. The problem could be a faulty fuel pump that has yet to completely die.
Posted on May 21, 2009
This could be caused by a faulty voltage regulator, but since it has happened on more that one alternator, that can't be the problem, right? The next thing that I would look at would be a defective or loose belt. Also check the tensioner to make sure it is working properly and is keeping tension on the belt. If the belt is slipping or is worn out, it will cause voltage fluctuations. You may want to look at changing or at least inspecting the belt. Hope this helps and best wishes.
Posted on Aug 27, 2009
Tips for a great answer:
Jan 31, 2016 | Cars & Trucks
Dec 20, 2013 | Chevrolet Impala Cars & Trucks
Jan 09, 2011 | 1999 Dodge Intrepid
Nov 12, 2017 | 2002 Mercury Sable
Dec 14, 2010 | 2002 Mercury Sable
Sep 20, 2010 | 2001 Ford Escape
Apr 13, 2010 | 2003 Jaguar X-Type
Apr 22, 2009 | 2002 Audi TT
Nov 12, 2008 | 2002 Ford SVT Focus
Nov 19, 2016 | 2002 Mercury Sable
51 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: