89 Toyota Camry Question

Tiny
STEVE39
  • MEMBER
  • 1989 TOYOTA CAMRY
1989 Toyota Camry has a 2.0 fuel injected engine with 165k miles on it. I was having a problem with the car not acellerating and getting up to the proper RPMS to actually even get it to move, so I checked the exhaust and that seems ok, timing seems ok, so then I replaced the throttle control sensor near the firewall of the car on the top of the engine. RPMS seem a little better but now the car accelerates quickly and then goes back to to a very low rpm, and then starts to accelerate quickly again, over and over. ALSO I can now hear a slight knocking sound in the engine when it is doing this. How can I get this car back to normal? Its always been a good car and very dependable. HELP!
Monday, September 17th, 2007 AT 11:27 AM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Look in the book and check for the correct voltages on the TPS for the closed and WOT voltages-adjust it by turning the TPS.

Also you might want to take the IACV out and clean it and bench test the MAF sensor.
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Monday, September 17th, 2007 AT 2:13 PM
Tiny
STEVE39
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  • 18 POSTS
Look in the book and check for the correct voltages on the TPS for the closed and WOT voltages-adjust it by turning the TPS.

Also you might want to take the IACV out and clean it and bench test the MAF sensor.[/Quote:1ad59b7674]

Thanks Doctor. Whats the IACV?
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Thursday, September 20th, 2007 AT 8:57 AM
Tiny
FISHERMAN
  • MECHANIC
  • 937 POSTS
Look in the book and check for the correct voltages on the TPS for the closed and WOT voltages-adjust it by turning the TPS.

Also you might want to take the IACV out and clean it and bench test the MAF sensor.[/Quote:a025760886]

Thanks Doctor. Whats the IACV?[/Quote:a025760886]

Hello Steve
IACV Its: Idle Air Control Valve
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Thursday, September 20th, 2007 AT 9:05 AM
Tiny
STEVE39
  • MEMBER
  • 18 POSTS
Is that the big metal piece thats connected to the air filter?
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Thursday, September 20th, 2007 AT 9:27 AM
Tiny
FISHERMAN
  • MECHANIC
  • 937 POSTS
Thats The MAF Sensor (Rasmataz told you to check that too)

The IAC valve is attached to the lower portion of the throttle body.
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Thursday, September 20th, 2007 AT 10:02 AM
Tiny
STEVE39
  • MEMBER
  • 18 POSTS
Thats The MAF Sensor (Rasmataz told you to check that too)

The IAC valve is attached to the lower portion of the throttle body.[/Quote:45313b8210]

OK, Ill check it out, thank you!
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+1
Thursday, September 20th, 2007 AT 10:05 AM
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Thats The MAF Sensor (Rasmataz told you to check that too)

The IAC valve is attached to the lower portion of the throttle body.[/Quote:b9da2ea4e9]

OK, Ill check it out, thank you![/Quote:b9da2ea4e9] may also have a bad catalitic converter
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Friday, September 21st, 2007 AT 11:04 PM

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