When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just tonight I was driving home from work and everything was fine, then I was going up a hill pressing the pedal to maintain speed and there was no acceleration. Pulled off and stopped thinking it was just a stall, turned key off and waited a few seconds, then tried to get the truck started and the starter motor cranked, but the engine wouldn't run.
Waited about 10 mins and tried again and the engine started and I was able to get back home without issue.
I have had the check engine light on for the P2135 code that deals with the throttle body position sensor, but I haven't had any issues driving since I bought the truck 6 weeks ago, the stall tonight was the first time. There's also been a rough idle, but once I hit the gas and start moving, it's smooth as can be.
Should I assume that the fuel module here is the issue that caused my truck to stall tonight or could it have been related to the P2135 code?
Mine did the same thing and I got a code for the fuel rail. There is also a connection under the drivers side on the outside of the frame rail. I had corrosion inside the connector. Cleaned it up and fired right up. I bought a new FPDM and that didn’t fix it. This is how I figured out the actual issue for me. But I kept the FPDM just to avoid a future problem
I did buy the new Dorman one with standoffs. The Dorman also has gray paint on the aluminum body, so I assume that's another way they prevent galvanic corrosion.
Last edited by ShirBlackspots; 06-22-2019 at 09:42 PM.
Steel bolts pass from the housing to the frame, completing the galvanic circuit. Stand-offs do NOTHING to stop galvanic corrosion, they merely slow it due to less water/salt/debris filling up on top of the FPDM.
Galvanic corrosion occurs throughout the metal, not from the outside-in. I've had to replace enough sacrificial zincs on marine diesels/hulls to see this, even on zinc pencils that have zero exposure to the outside environment (internal engine zinc pencils).
Steel bolts pass from the housing to the frame, completing the galvanic circuit. Stand-offs do NOTHING to stop galvanic corrosion, they merely slow it due to less water/salt/debris filling up on top of the FPDM.
Galvanic corrosion occurs throughout the metal, not from the outside-in. I've had to replace enough sacrificial zincs on marine diesels/hulls to see this, even on zinc pencils that have zero exposure to the outside environment (internal engine zinc pencils).
Are these grounded through the frame? What would happen if you used a plastic sleeve, so there is no bolt to FPDM contact?
Are these grounded through the frame? What would happen if you used a plastic sleeve, so there is no bolt to FPDM contact?
I'd asked that question before, and a few guys more knowledgable than me said it grounds through the wiring harness. If that's the case, then plastic sleeves/washers or even ABS bolts should pretty mostly cure galvanic woes (other than winter salt-water completing the circuit. Another option would be running a strip of weaker sacrificial metal from the FPDM to the frame (such as pure zinc). The FPDM doesn't seem like pure aluminum, but seems to me like a zinc or magnesium alloy, probably why it rots so quickly.
05-21-2019, 08:33 AM
