22R running crazy. Help

Tiny
LONG90
  • MEMBER
  • 1922 TOYOTA PICKUP
I have a 1989 Toyota pickup truck, 22R 4 cylinder with a 2 barrel carb. And manual transmission. It currently has about 215k miles on it. At 160k the engine was torn down and looked really good so no major changes were made. The problem I’m having is the engine idles really hard, sometimes it shakes pretty violently. I checked the vacuum lines, ignition timing, air filter, pcv valve, thermostatic air cleaner, and sprayed the carb with cleaner. I took off the old egr valve (which was clogged with carbon) and replaced it. I then set the idle speed to the specified 700 rpm. The problem is the engine still bounces around and the engine speed goes up and down between 600 – 800 rpm, sometimes jumping as much as 60 rpm at a time. When the engine first starts up it runs ok, but once the fast idle cam disengages it runs rough and lopes. When I accelerate it runs ok and does so even for a few seconds after I let off the gas but then it runs rough and lopes. Does anyone have any idea what the problem is?
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Tuesday, January 23rd, 2007 AT 1:02 PM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Check the ignition components and recheck for vacuum leak-also the brake booster/hose.
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Tuesday, January 23rd, 2007 AT 2:32 PM
Tiny
SERVICE WRITER
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I'll secong the ignition parts. I "think" these had some tps problems, but it my be the 22re I'm thinking of.
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Wednesday, January 24th, 2007 AT 6:10 PM
Tiny
RASMATAZ
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What kind of vacuun are you using: Is it manifold, ported, or venturi for the EGR.
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Wednesday, January 24th, 2007 AT 7:56 PM

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