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Re: Cold Start Problems - Fuel puddle found in intake manifold 700 1989

posted by  someone claiming to be Haroon on  Fri Mar 2 16:11 CST 2001 [RELATED]

Does this a self diagnostic box on it? My 89 240 does.

Two thoughts.

1-(unlikely) Sounds like the temp senor. You may have put in a bad one or put it in wrong. But a bad one would cause the car idle fast even when hot. Check it with an ohm meter.

2-(likely) While cleaning the TB, did you remove the TPS (throtle positioning senor). When I cleaned mine (240), it would do the same thing. Idle high and then be fine at normal temp. If you removed it, reposition it.

OR in my case also, I tighten the throtle linkage nut too much. The trotle would be slightly open when I would start it, confusing the car and return to normal after I rev it up and when hot. Remove the throtle linkage from the TB and start it then. See what happens. If still high, turn the TPS clock wise (if you removed it) untill it idles fine.





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