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90 3.slow, bad mileage, boggy, fuel smell when cold

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Old 03-20-2011, 04:44 PM
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90 3.slow, bad mileage, boggy, fuel smell when cold

I have read many threads about bad mileage or leaking fuel, but none with all my symtoms.

Truck starts ok when cold, seems boggy, have to feather the throttle to move the truck. It it stalls when trying to move it, very hard to restart (have to almost hold it on the floor to get it to refire)

Also smells of gas when cold (seems to be coming from the exhaust, not anything leaking under the hood)

Once its warmed up, seems to run pretty good, maybe a little more guttless than the normal guttless feeling it has always had......

terrible mileage (even by 3.slow standards as far as I have read) Mileage is like a quarter of a tank in 25-35 miles or so

seems to be getting way too much fuel, I am thinking it could be a coolant temp sensor, o2, or maybe a fuel pressure regulator leaking into the vaccuum line hooked to it.

Any other ideas or known problems?
Old 05-17-2011, 11:44 AM
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Changed coolant sensor, air filter and new cat converter and exhaust.

Still boggy when cold, get bad mileage sometimes, other times its fine

suggestions?
Old 05-17-2011, 11:48 AM
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Truck starts ok when cold, seems boggy, have to feather the throttle to move the truck. It it stalls when trying to move it, very hard to restart (have to almost hold it on the floor to get it to refire)

Also smells of gas when cold (seems to be coming from the exhaust, not anything leaking under the hood)
I have the same problem as far as this goes.. I am not sure what could be causing it!
Old 05-17-2011, 01:28 PM
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Already checked the fuel rails for leaks etc. Bad mileage sometimes as well, but not always
Old 05-17-2011, 02:56 PM
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Check tps? When they start to go out, I always notice they do it spurts, until it just dont work... afm as well.
Old 05-17-2011, 03:25 PM
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is there a procedure for checking either of those items? I am assuming ohms resistance open, vs closed or something of the sort
Old 05-19-2011, 03:49 PM
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It seems to do it more when its cold outside.....
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