NO POWER?

Tiny
TMAJ9447
  • MEMBER
  • 1997 DODGE RAM
  • V8
  • 4WD
  • AUTOMATIC
  • 600 MILES
Recently replace engine with short block 318. Still have no power. Had dodge tech check timing to ensure it was correct. There is no cat or o2 sensors in the new exhaust. Basically it runs the same as it did with old engine and 258k miles on it.
please help!
Do you
have the same problem?
Yes
No
Tuesday, August 9th, 2011 AT 1:26 AM

17 Replies

Tiny
MERLIN2021
  • EXPERT
Did you check fuel pressure?
Was this
answer
helpful?
Yes
No
Tuesday, August 9th, 2011 AT 8:34 AM
Tiny
TMAJ9447
  • MEMBER
Can you advise me as to where the test port is located, I can not seem to ifnd it. Also what pressure am I looking for?
Was this
answer
helpful?
Yes
No
Wednesday, August 10th, 2011 AT 2:45 AM
Tiny
MERLIN2021
  • EXPERT
Read codes and post which one comes up here's how.
RETRIEVING DTCS
Using Digital Odometer (If Equipped)
1. Ensure battery is fully charged. Attempt to start engine. Turn ignition off.
Without starting engine, turn ignition on, off, on, off and on within 5 seconds.
2. After a short pause, odometer reading is replaced by a 2-digit DTC. If more than
one DTC is stored, after first DTC is displayed, there will be a short pause and
then another stored DTC will be displayed.
3. DTC 55 will always be last DTC displayed. After DTC 55 is displayed, odometer
returns to normal mode. Once all DTCs are recorded, retrieve DTCs using scan
tool to ensure all DTCs are obtained. See USING SCAN TOOL.
Using Malfunction Indicator Light (MIL)
1. Ensure battery is fully charged. Turn ignition on and note operation of MIL.
When ignition is first turned on, MIL should come on and remain on for 3
seconds to verify bulb and circuit operation, and then go off.
2. Attempt to start engine. Turn ignition off. Without starting engine, turn ignition
NOTE: It will be necessary to use MIL or digital odometer (if
equipped) and scan tool to retrieve all DTCs. When using
MIL or digital odometer to retrieve DTCs, some DTCs have
more than one meaning. MIL or digital odometer is unable to
distinguish between different failures for a specified
component. For example, there are several possible failures
for the oxygen sensor system, but the MIL or digital
odometer can only identify an oxygen sensor failure by
displaying a DTC 21. Scan tool is able to distinguish
between different failures. When using a scan tool, scan tool
is not able to identify all possible DTCs. As an example, scan
tool may not be able to identify or display a DTC for a
malfunctioning A/C clutch relay circuit, Auto Shutdown
(ASD) relay circuit, or charging system voltage circuit, but
these DTCs will be displayed by MIL or digital odometer.
NOTE: If MIL does not come on for 3 seconds and then go off,
bulb circuit may be defective, or problem area may exist
on CCD Bus between PCM and instrument cluster. If
problem exists with CCD Bus, this problem may be
displayed when using scan tool to retrieve DTCs.
On, off, on, off and on within 5 seconds. Record 2-digit DTCs as displayed by
flashing MIL.
3. For example, DTC 24 will be displayed by 2 flashes, short pause, and then 4
more flashes. A short pause will exist between first and second digits on DTC. If
more than one DTC is stored, after first DTC is displayed, there will be a longer
pause and then another stored DTC will be displayed.
4. Once all DTCs are recorded, retrieve DTCs using scan tool to ensure all DTCs
are obtained. See USING SCAN TOOL.
Using Scan Tool
1. Ensure battery is fully charged. Attempt to start engine. Turn ignition off.
Connect scan tool to Data Link Connector (DLC). DLC is located below
instrument panel near steering column. See Fig. 1.
Fig. 1: Locating Data Link Connector (Typical)
Courtesy of CHRYSLER CORP.
2. Turn ignition on. Using scan tool manufacturer's instructions, record all DTCs
displayed on scan tool. Using all DTCs obtained, proceed to SELFDIAGNOSTICS
TESTS. Once all repairs are made, ensure DTCs are cleared
from PCM memory. See CLEARING DTCS.
CLEARING DTCS
Ensure ignition is off, then turn ignition on. Using scan tool manufacturer's
instructions, erase DTCs from PCM memory.
INACTIVE DTC CONDITION
This procedure applies if you have been sent here from diagnostic tests and have just
attempted to simulate the condition that initially set the DTC. The following additional
checks may assist in identifying a possible intermittent problem:
Visually inspect related wiring harness connectors for broken, bent, pushed out or
corroded terminals.
Visually inspect related wiring harnesses for chafed, pierced or partially broken
wires.
Check for pertinent Technical Service Bulletins (TSBs) relating to the problem.
Was this
answer
helpful?
Yes
No
Thursday, August 11th, 2011 AT 7:30 AM
Tiny
TMAJ9447
  • MEMBER
The codes we got are
po132
po135
po138

o2 htr
02 sensor
cat
i know the last 3 are because there are no 02 sensors or a cat.
I am going to see about the fuel pressure now.
Was this
answer
helpful?
Yes
No
Friday, August 19th, 2011 AT 5:58 PM
Tiny
TMAJ9447
  • MEMBER
Update, found 4inch crack in fuel tank, got new tank, will update when installed. A/c blower still seems like it is loosing vac, hope tank helps. Will update when installed.
Was this
answer
helpful?
Yes
No
Tuesday, August 23rd, 2011 AT 10:07 PM
Tiny
MERLIN2021
  • EXPERT
It wont hurt!
Was this
answer
helpful?
Yes
No
Tuesday, August 23rd, 2011 AT 11:56 PM
Tiny
TMAJ9447
  • MEMBER
Update, still trying to get a port installed to test fuel pressure. Installed cat and o2 sensors, cleared codes. New code PO171 System too lean (cylinder Bank no 1.) Also what should the fuel pressure be?
Was this
answer
helpful?
Yes
No
Sunday, August 28th, 2011 AT 4:46 PM
Tiny
MERLIN2021
  • EXPERT
It van be a vacuum leak or bad injector, my electric is out due to storm
I will check the pressure spec when I can but usr spray throttle body cleaner and spray around vac lines and manifold, if idle speed changes you found your leak.
Was this
answer
helpful?
Yes
No
Sunday, August 28th, 2011 AT 5:23 PM
Tiny
TMAJ9447
  • MEMBER
Okay still trying to get a port to check the fuel pressure. I noticed around 60 mph the a/c blower dies and the engine seems to looses power. Do you think this is a vac leak causing this condition. I will spray around and see if I find a leak.
Was this
answer
helpful?
Yes
No
Sunday, August 28th, 2011 AT 11:21 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If you are running the engine without a cat and o2 sensors, the computer is causing the odd fuel mixtures.
Was this
answer
helpful?
Yes
No
Thursday, October 6th, 2011 AT 11:14 AM
Tiny
TMAJ9447
  • MEMBER
Agree, I have add cat and o2 sensors. Still get po171 lean condition. I checked the fuel injectors - meet requirements, running seafoam thru it now. It does take a little longer (turning over) to start than it should. It does not have a port to test fuel pressure.
Was this
answer
helpful?
Yes
No
Saturday, October 8th, 2011 AT 3:39 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You have to test it inline.
Was this
answer
helpful?
Yes
No
Saturday, October 8th, 2011 AT 3:46 PM
Tiny
TMAJ9447
  • MEMBER
Is there a adapter I can buy, how is it done?
Was this
answer
helpful?
Yes
No
Sunday, October 9th, 2011 AT 2:36 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You can get an addapter and test it at the fuel filter. Check it both before and after the filter to make sure the filter isn't plugged.
Was this
answer
helpful?
Yes
No
Sunday, October 9th, 2011 AT 3:40 AM
Tiny
MERLIN2021
  • EXPERT
I think if the pressure was low, you would have lean codes on both banks. Checked for vac leaks yet? Injectors? Plugs and wires? PCV?
Was this
answer
helpful?
Yes
No
Sunday, October 9th, 2011 AT 11:35 AM
Tiny
TMAJ9447
  • MEMBER
Replaced fuel injectors seemed to resolve issue.
Was this
answer
helpful?
Yes
No
Tuesday, January 17th, 2012 AT 6:31 AM
Tiny
RIVERMIKERAT
  • MEMBER
Thanks for letting us know.
Was this
answer
helpful?
Yes
No
Thursday, January 19th, 2012 AT 10:39 PM

Please login or register to post a reply.

Recommended Guides