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90 Cadillac Seville
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2 Posts
Discussion Starter #1
would appreciate any feedback on the following. i have a 90 seville 4.5 with 65k. the car runs great, good acceleration, no missing. recently replaced o2 senser, catalitic converter, plugs,air filter,fuel filter. Now the problem is , on inclines ,going up steep hills. i get poor performance, no missing, just no power,car will hardly do 50 mph. seems to be worse with the a/c on ,will bogg down to 30/40 mph. HELP!!!!!! Thanks.
 

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2008 SRX
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403 Posts
I would start with a fuel gauge. Connect it to the rail and tape it to the windshield so you can read it while driving up a hill where this happens.
 

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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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6,738 Posts
Does the transmission downshift at part throttle? if not look to see if the trans cable is disconnected at the throttle body.
 

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1988 Sedan DeVille
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89 Posts
Are you low on gas when that happens? I've learned to never have less than 1/4 tank in my car.
 
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