Engine/Transmission (1998.5 - 2002) 1998 dodge ram

[SAndreasen]

Yes I paid five and it books for about 8 so hopefully I did ok

 

[Sticks]

Well, let us know what the codes are when you get them. You may need more than a cheap "Auto Zone" scan to find them all. ECM and PCM, most generic scanners don't read both.



If all you get is a P1693, then you are not getting the info from the ECM.



IIRC, all the PCM will show is vehicle speed sensors, ABS, transmission (does not apply - yours is manual), and maybe a couple other systems. Nothing engine related.

 

[SAndreasen]

Injection pump timing circuit and tps were the codes

 

[JR]

Did you use a code reader that is capable of erasing the codes? If your not having driveability issues they may have been from prior issues, usually those codes will be acompanied by a physical problem.
BTW, the actual code numbers are important to get in the future because there is generally more than one code for an associated sensor. Getting the specific code number will help tracking down an issue.

 

[SAndreasen]

Thanks for the reply it runs fine

 

[SAndreasen]

The truck runs fine no dead pedal or surging that's why I wasn't worried about buying it

 

[Joseph Donnelly]

Find a friend with a Smarty or other device to delete the codes and see if they come back. Does the APPS, etc. look recently replaced?

 

[Sticks]

Find a friend with a Smarty or other device to delete the codes and see if they come back. Does the APPS, etc. look recently replaced?

And get your fuel pressure checked post filter (between the filter and the injection pump) ASAP!

Pump timing is typically a P0216 - caused by low fuel pressure (we still need to know the actual codes).

Both code descriptions also start showing symptoms when things get hot ~ temperature affected.

Both code descriptions as they read, and given a dealer quote to repair would prompt someone to cut their losses and sell the truck. $2500 - $3000.

 

[SAndreasen]

I drove it home over an hour at freeway speed and then drove it another hour to a friends wedding and the tps never acted up and no surging or dead pedal

 

[Sticks]

I drove it home over an hour at freeway speed and then drove it another hour to a friends wedding and the tps never acted up and no surging or dead pedal

Ambient temps have an effect, at least in the early stages of failure. Both units have to be really heat soaked.

When my APPS/TPS started going, it was only when it was 90*+ outside, and surface street traffic, or longer highway travel.

 

[SAndreasen]

Is the raptor direct replacement pump a good upgrade

 

[JR]

The Raptor isn't as bad a pump as most make it out to be, but I personally believe the location is probably the cause for most of the issues it has. Being mounted on the engine, it is subjected to heat soak and vibration, and it has to draw fuel through undersized fuel lines from the tank to the engine. The best thing you can do IMO is buy the relocate kit if/when you buy the pump to mount it on the frame rail, and upgrade to 3/8 fuel lines. The other thing is that there is no pre filter so occasionally the little screen gets plugged on the inlet side which can cause loss of pressure. An inline filter before the inlet might be cheap insurance to prevent that. The AD 100 uses the same motor as the Raptor and they see a lot less failures than the Raptor, I believe mounting location is the main culprit.

 

[SAndreasen]

I put a gauge on it has 12 psi at the filter is this ok ?
Thanks shaun

 

[Sticks]

I put a gauge on it has 12 psi at the filter is this ok ?
Thanks shaun

Presuming that the pressure is taken between the filter and the VP, and does not drop below 10psi when under load, you are OK for a stock truck. My FASS 95 holds 13-14 at idle, and 11-12 under full load (Edge on 5x5).