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89 Olds Delta 88 Tranny proglems


imgoofy76
10-30-2008, 03:08 PM
My daughter has an 89 Olds Delta 88 and the other night when she headed home from work the tranny started acting up. She put it in gear and took off but it never shifted out of low gear. It's like it's stuck in low and now the check engine light is on. Any ideas. Changed the modulator valve and didn't help.

imgoofy76
10-30-2008, 03:09 PM
Also need to say this car is in mint condition but it has set basically for the past 4 years only being driven once a month or so.

maxwedge
10-30-2008, 06:28 PM
Is the fluid full and clean? What is the CEL code?, is there vacuum to the modulator? All basic issues needed to diagnose this type of problem.

imgoofy76
10-31-2008, 06:48 AM
Would the Mass Air Flow Sensor have anything to do with the vacuum? The reason I ask is the car has another issue with idle and sometimes intermittantly during driving of missing real bad and sometimes the engine will die at an idle. It starts right back up but spits and sputters till you take off. I was told that the Mass Air Flow Sensor needed replaced and that would take care of that problem.

maxwedge
10-31-2008, 09:10 AM
That may or may not correct the stalling,and it will not prevent trans upshifts, again, guess work is being applied. When this happens disconnect the maf and see what happens and again get the code, without it you cannot proceed with any confidence.

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