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1990 Cadillac Seville Questions

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And can a sensor for a 99 Seville be installed in a 90..the sensor works every now and then
Cranks no start up it will if put gas under the breathed then it start up for few seconds
This part might control the A/C to blow out the dash vents under the passenger side off to the right of the fuse panel.It;s electric and has vacuum lines to it I think.
Leaks power steering fluid
I have a 1990 cadillac seville. It has been missfiring on me and it backfires and looses power sometimes. The service engine light comes on and goes off. I changed the distributor cap rotor button and plugs and it still does it. I turn the car off and start it again and it runs better. The other day it backfired and was losing power i cut it off and started it again and it backfired real loud and it blew my muffler apart at the seams. I changed the muffler and its still missfires and the light still comes on and goes off. When i barely hit the gas and go under 40 is when its missing and jerking when i step on the gas and it opens up it doesnt jerk. Does anyone know what it could be
Service engine light came on - had codes cleared (map sensor) - car doesn't start at all - tightened battery cables - car started then didn't start - what next?
PUT ALTERNATOR ON IT PLUGS AND WIRE
Car won't start and the above message shows on computer
it happens eveytime u try to start it
Starter disabled due to theft system, wait 3 min, 2 min, 1 min, start car. But it won't start and the computer repeats the message. What is causing this and what is the cheapest/fastest solution?
Is it difficult to change a transmission modulator?
my headlights on my g20 chevy van went out i thought it was the bulbs so i bought new ones but it didnt work some tell me its the pull switch that turns them on others tell me its the dimmer switch i need to know which is it
I've been told this model vehicle has had problems with the computer system and I should probably sell it, or it could turn into a money pit. Any thoughts on this ?
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