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Weird shake after start and Check Engine Light 700 1990

posted by  egdeaile on  Thu Jul 24 16:46 CST 2008
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last visit: Sun Feb 1 13:36 CST 2009
[RELATED]

Hi,

If it's kind of dying at idle, it may have the same issue mine does. There is an Idle Air Control Valve beneath the throttle body. On mine, someone used a piece of heater hose rather than the right thing, which causes the hose to collapse any time the throttle is not open (at idle). I don't have a CEL, but I didn't have a CEL with a bad O2 and MAF, so my CEL may be burned out.

Anyways, when the throttle closes, the engine still needs air, which goes through a bypass via the idle air control thingie I mentioned above. it's about a half inch inner diameter hose going to the air manifold prior to the throttle body. Mine collapses when I start the car... meaning I need to replace it with the correct tubing.

Hope that helps

--
EG Deaile

1989 Volvo 745 T (B230FT)
Previous:
1982 Volvo 245 DL
1995 Volvo 855 (2.4 NA)
2000 Volvo XC 70 (2.5 T)






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New Weird shake after start and Check Engine Light [700][1990]
posted by  Yoshi740  on Wed Jul 23 21:00 CST 2008 >


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