1992 Oldsmobile Delta 88 Highway Stall

GMC
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HAROLD
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  • 2 POSTS
I have a 92 oldsmoblile Delta 88 Royal 3.8 motor. So far I've changed new gas filter, took out catalytic converter replaced it with a straight pipe in between, new muffler regapped sparkplugs and also replaced tramsmission's neutral safety switch. Can't go no more than 60 kms. on highway. Motor starts to pulsate and stalls. put back on neutral and car starts okay. Around town drives okay. Please Help!!!!!!!!
Feb 12, 2006 at 9:18 AM
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CHEVY350GUY
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does it happen all the time or just when the engine is cold, or hot?
Feb 12, 2006 at 11:34 AM
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HAROLD
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Hey Chevy350guy
The problem always seem to happen after it warms up when I accelerate than it chokes and stalls. When rolling down the highway I put it in neutral and it starts fine. I rev it up put it in gear goes good for a little while then it stalls again. I keep it below 60 kms it runs like a new car anything over that the problem starts again.........
Feb 12, 2006 at 2:05 PM
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MVANNESSJR
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  • 223 POSTS
May have a faulty torque convertor and it's not engaging into overdrive.
Feb 12, 2006 at 2:30 PM
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TBEARGA
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I had a problem similar to this and it turned out to be a faulty ignition model.

The car would periodically die and would start backup but as soon as you shifted to drive it would die again. After a fe minutes the problem would clear up. This continued intermeittently until the module finally died.
Feb 13, 2006 at 8:15 AM
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Suggested Repair

Check whether the torque converter is engaging overdrive, as suggested for the warm highway stall. Also inspect the ignition module, which was reported in a similar case that died when shifted into gear until the module failed.

Conversation Summary

The owner of a 1992 Oldsmobile Delta 88 Royal with a 3.8L engine said it drives fine around town and below about 60 km/h, but after warming up it pulsates, chokes, and stalls under highway acceleration. It restarts in neutral and runs briefly in gear before stalling again. A fuel filter, muffler, spark plug gap, and neutral safety switch had already been replaced, and the catalytic converter had been replaced with a straight pipe. One expert suggested a faulty torque converter that is not engaging overdrive. Another person described a similar stall caused by a failing ignition module.

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