Question about 1988 Oldsmobile Delta 88
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Posted on Jan 02, 2017
SOURCE: engine check light is on
does the car buck on the highway when accelerating under a slight load?
i owned one of these exact cars,3.8 litre.
2 problems. one,the baffles braek in the gas tank,and if you run 1/4 tank or less it will stall in a turn.
mine it was a right turn.
2nd problem,the EGR valve was stuck and it would surge or "buck" on the freeway.
replaced the egr (exhaust gas return)valve and it ran like new.
if the egr valve is code 42,(i do not have the manual in front of me) you have found the problem
check the egr,it can cause the problems you have.
Posted on May 09, 2009
The problem sounds like the solenoid that locks up the torque converter. This will not set a code or turn on the check engine light. The car will restart each time after it stalls. This will happen when you are comming to a stop or turning a corner. At times, you can start the car in neutral but when you put it in drive or reverse, it will again stall.
This can also happen after you have driven the car and parked it. When you restart the car, it may stall when you try to drive it because the solenoid is still locked from when you pulled into the parking spot.
Try to free it up by driving the car about 32 mph in drive (drive with the square around the D) where the overdrive and lock up torque converter will work. At 32 - 34 mph, pull the shifter down to the next Drive (D without the box around it) and you should feel the bump of the torque converter unlocking. Then put it back into the upper drive location and you will feel it lock up agian. Repeat this about 20 times and see if this does not help. These can start becomming mechanically "Sticky" and cycling them 10 - 30 times can help.
There is also a 6 wire connector on the forward (front of the car) side of the transmission. This connector might be dirty. Clean it with electrical contact cleaner (spray type) and reconnect it to the transmission. This connector is probably not the problem but worth lookign at anyway.
There is also a small port in the valve body of the transmission that if plugged, it can cause this problem. I feel it is most likely a "Sticky" soleniod that locks up the torque converter and makes the car stall just like comming to a stop in a standard transmission car without pushing in the clutch.
Posted on Jul 27, 2009
Run into one of the bigger autoparts stores like Pep Boys, or Autozone, and get a free trouble code scan. This will point everyone in right direction, rather than guessing and spending money on parts that don't need replacing. If problem not obvious from codes, get back to us with those codes and we'll gladly assist you further.
Posted on Oct 28, 2009
P0107 map sensor circuit low- the map sensor sends signal to computer for control of fuel injection, it's on firewall side of engine, above right valve cover(firewall side) little black rectangular box with 3 wire connector and a vacuum line hooked to it. if it's vacuum line is ok -there is another connection at other end of hose/plastic tube make sure that vaccum supply to sensor is good, if it is, sensor probably bad can check out but not outside a shop or a computer diagnostics. if vacuum supply is good i'd probably just try a sensor
Posted on Oct 02, 2010
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