[V8] Bogging Down

[Tony and Lillie]

My MAF went bad slowly, but never threw a code. The TPS could be telling the 
engine it's at idle or full throttle when it's not, but other than idle and 
full throttle it's not used. You could check that by limply unplugging it 
and driving without. The Trans does use it throughout the full range for the 
sport mode, however.

The knock sensors will not cause that bad of an issue, just retard the 
timing too much, causing you to loos a bit (probably 5% at most) of your 
power. Generally they fail open anyhow (that's all I've ever seen) which 
gives no knock signal, as in no engine protection. But, full power.

I would be surprised if the timing sonsors would be causing this, as they 
are used for startup timing and continual timing of the engine. Never seen 
one fail that didn't cause the engine not to run. One will cause the car to 
die completely, the other will affect hot restarting.

HTH,
Tony

----- Original Message ----- 
Subject: [V8] Bogging Down


> Car has 131,000 miles, new fuel filter, sensors seem to be good, no 
> starting issue or stalling. Might try a new MAF. Anyone got an extra for a 
> reasonable price?
> Jeff