Need help bad 4.2l
07-10-2017, 07:01 AM
#1
Junior Member
Thread Starter
Join Date: Jul 2017
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Need help bad 4.2l
01 4.2 L. Auto only 94,000 miles and yes before he gets asked I did use the search. It idles fine but when you put you foot on the gas it sputters ,skips, and jerks .you put it in gear it does the same thing. has no power. I have changed everything that I can think of related to the codes that it has been throwing which are a lot new throttle position sensor, camshaft position sensor, coil, plugs, brand new fuel filter and I'm at a loss anybody got any idea
Codes are
Po340
Po453
P1747
Po755
Po743
Po443
P1451
Po135
Pp141
Po155
Po161
P1409
7/10/17 today I'm testing the fuel pressure after I buy a tester..
Codes are
Po340
Po453
P1747
Po755
Po743
Po443
P1451
Po135
Pp141
Po155
Po161
P1409
7/10/17 today I'm testing the fuel pressure after I buy a tester..
07-10-2017, 02:14 PM
#2
Junior Member
Thread Starter
Join Date: Jul 2017
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Test the fuel pressure idling I got 32 psi when he hit the gas it jumps up to 40 my book says it supposed to have in your from 28 to 50 so I guess all that is working fine I installed a new EGR valve just because I had one no change
07-13-2017, 08:45 AM
#3
Senile member
if this has a mass air flow sensor, make sure there are no leaks in the intake tract after the MAF.
Also if there is a MAF, check the header gaskets for leaks, as well as o2 sensors for leaks.
Also if there is a MAF, check the header gaskets for leaks, as well as o2 sensors for leaks.