Question about 1989 Chevrolet Cavalier

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Hey chev cavalier 2.8 1989

Heres the more info on that problem
for the 89 z24 cavalier problem

.....

its just white cuz i took the cat off..

cuz i thought my problem could have been to do with the cat...

cuz i lost power driving up hills and on highways now it just will start the die right away

or start and idle really bad...

any ideas???

i was thinking crank sensor.. or injectors

Posted by on

  • Seph-X Oct 02, 2008

    well it says on the car milti port injection... and i have removed the Cat Its is not on the car.. LOL Still same problem...

    Fuel pressour is at about 10 PSI.. Fuel pump kicks on can here the noise it makes...

    im thinking more of a fuel related problem then head gasket

  • numan437 Jan 31, 2009

    I have a problem with my 89 cavalier it wont start? There is no spark when i put test light in plug cap, Have any ideas.........

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  • 29 Answers

Loss of power could be a result of a plugged cat, but not the smoke,still leaning toward a head gasket or cracked head. Remove all of the spark plugs. Pressurize the radiator with approximately 15 pounds of pressure and wait for approximately 1/2 hour to 1 hour then crank the engine over and watch to see if coolant comes out of the spark plug holes. This will tell you if your problem is a head gasket or possibly a cracked head. And just on a side note, unless it was a typo, an 89 should only be carburated or have TBI, they didnt have injectors on those models yet, and off the top of my head I dont think most vehicles were using crank sensors either then, but I'd have to look that up to know for sure.

Posted on Oct 02, 2008

  • Dartonpro Oct 03, 2008

    Sorry about that, I got mixed up on what engine you had. Yes, the multiport was available on the 85-92 2.8 and 3.1. Now that being said, a very common problem of loss of power is a failing fuel pump or failed fuel pressure regulator. A pressure regulator maintains 28-36 psi (28-50 psi on turbocharged engines) in the fuel line to the injectors. So if you are only at 10 psi you are on the right track for that. A pressure regluator is an inexpensive fix, hopefully thats it, but it sounds more like your fuel pump is failing with the loss of power and idling problems. But you may still have another problem that is unrelated because whether your cat is on or off you should not have white smoke, that is an indication on water somehow getting into the system, like I said usually head gasket. Hopefully this is a little more clear and again sorry for the mix up.

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