2 years ago, had "no G-signal" code - replaced ICM. Problem reoccured within 1 year - replaced distributor/ICM.
Ran fine for a while, then abruptly began to stumble when accelerating. Impossible to get speed. Similar feel to ICM problem, however no codes (hard or soft). In park/neutral runs fine, idles and revs without hesitation.
Has new plugs, wire resistance in range, new cap/rotor, new fuel filter, fuel pressure tested in range (increased when regulator vacuum removed), injector coil resistance in range, cylinder compression all over 150 psi (held pressure).
Its just odd to me that it runs so well in park, but in gear - with some gas - it just bogs down. Wouldn't clogged injector fault manifest full time? Or PCM and ignition faults throw a code? (Obd-1)
I work on scissor lifts and booms (aerial manlifts). The electrical and hydraulic systems are fairly complex but ignition and engine controls are VERY simple compared to automotive applications, where I'm not as well versed. My instinict tells me I'm missing something obvious. (?)
Desperate to fix this before the rain starts again (seattle - no garage/carport). Any suggestions for my continued troubleshooting would be greatly appreciated! Thanks!
have the same problem?
Wednesday, August 8th, 2007 AT 11:54 PM