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Unread 03-07-2013, 10:06 PM   #1
Mopar440
Registered User
 
Join Date: Mar 2013
Location: Charlotte, NC
Posts: 11
Need help with Misfire diagnostics

Hey everyone, My tow rig ( 99 Dodge Ram 2500, 5.9L, V8 Magnum ) has been having misfire problems for a while now and I have yet to track down the elusive troublemaker.

New:

Coil >>
Plugs >>
Wires >> All ACCEL High Performance
Cap >>
Rotor >>

TPS
MAP
IAC

few more just cant think right now lol

Heres the thing. Idle is perfect, acceleration is perfect. When I'm just using light steady pressure on the stupid pedal ( like cruising and such ) it surges slightly, backfires. goes away if let off or stomp on it. Also when normal driving right after it shifts (auto) it pops, backfires and it pops, backfires when you let off the pedal.

Put on a scanner and Cyl 1,8 Misfire.

Cant find any vacuum leaks, putting a Timing Light on it Tomorrow.

I'm in need of more brains to find the problem. Any Ideas?

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Unread 03-10-2013, 09:19 PM   #2
Mopar440
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Join Date: Mar 2013
Location: Charlotte, NC
Posts: 11
Bump for ideas
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Unread 03-11-2013, 02:48 PM   #3
Mopar440
Registered User
 
Join Date: Mar 2013
Location: Charlotte, NC
Posts: 11
Well it seems that I must be lost or something because i just dont see how I can put the timing light on her from the top center. only way would be from either the side or underneath. anyone know anything about checking the timing on these trucks?
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