Getting codes p0420 and p0171. Symptoms are of a bad TPS but the car doesnt have one. What is the equivalent of a TPS on an 05.
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Getting codes p0420 and p0171. Symptoms are of a bad TPS but the car doesnt have one. What is the equivalent of a TPS on an 05.
P0420 is low catalytic converter function. P0171 is too lean condition. They are possibly related, look for a vacuum leak.
How's the car running?
Not at all. Starts then dies immediately. Also before this happened I was getting stuttering/hesitation. And from a stop I was getting a jerk sometimes. Almost as if the tranny was slipping. A google of TPS symptoms basically describes exactly what's happening but the 05s don't have a TPS. I need to know it's equivalent so I can replace it.
you codes lead to a vac leak more then likely.
http://www.obd-codes.com/p0171
http://www.p0420.com/ also maybe a chance the cat is clogged up. the check engine light ever flash? car sound like a vacuum with a full bag when you floor it driving, when it ran?
It just stuttered when I floored it... No power.
remove the o2 sensor from the rear manifold, then fire it up, see if it stays running.
this will make a nice exhaust leak, its pre cat so if it runs the cat is clogged up.
Driving on the highway about 55 I was getting weird what seemed like downshifts. Then at stop lights when starting off I was getting a nasty jerk. Also when going wot it was stuttering/struggling. I will try what you asked and see.
Also check the vac line that goes to the T under the supercharger snout.
Will do all of that and pull some plugs to see if they got fouled. At work so I'll post back in a few hrs.
Well boys thx for the help. Think I got it, was the maf all buggered because of this https://copy.com/pOM0wBoK9lfvOWA All codes cleared now but I haven't checked it again after a drive.
That's the MAF to TB hose. The side you don't see has a hole where the PCV valve empties into. That would be your P0171 problem, but you may still have the P0420 come back although a lean condition can cause that too.
All codes are cleared and havent come back after approx 50miles
Does it drive any better?
Drives the same as before the problem started.
:thumbs up:
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