FSM manual

[kbflip02]

my damn computer crashed and i lost my FSM i had...anyone have a link...

i started my J this morning and am experiencing some intermittent idling between 900 and 1200 rpms...pulled the ecu and shows no codes...need to locate IACV and attempt to clean but i dont know where it is since i dont have a FSM anymore...also if anyone has any other ideas as to the idle problem please let me know-K

[kbflip02]

my damn computer crashed and i lost my FSM i had...anyone have a link...

i started my J this morning and am experiencing some intermittent idling between 900 and 1200 rpms...pulled the ecu and shows no codes...need to locate IACV and attempt to clean but i dont know where it is since i dont have a FSM anymore...also if anyone has any other ideas as to the idle problem please let me know-K

oh and would a malfunctioning coil pack cause a constant miss or only sometimes???how would i check that

[gr8scott72]

my damn computer crashed and i lost my FSM i had...anyone have a link...

i started my J this morning and am experiencing some intermittent idling between 900 and 1200 rpms...pulled the ecu and shows no codes...need to locate IACV and attempt to clean but i dont know where it is since i dont have a FSM anymore...also if anyone has any other ideas as to the idle problem please let me know-K

IAC is on the intake manifold. Back corner towards the firewall on the driver's side. Royal pain to get to.

[GerryO]

Code 25 - Idle Air Control Valve

You might want to first consider things that don't trigger a CEL light or generate a Code, especially if the IACV is so difficult to access.

[kbflip02]

Code 25 - Idle Air Control Valve

You might want to first consider things that don't trigger a CEL light or generate a Code, especially if the IACV is so difficult to access.

the only thing that i know of that wouldnt trigger a CEL and cause my symptoms are a dirty MAF or a knock sensor and i cleaned the MAF and replaced the knock sensor....

[GerryO]

KS is a Code 34, but with NO CEL and shouldn't make for a rough idle, but would affect shifting points.

A dirty to the point of causing problems MAF should trigger a Code 12 and the CEL?

Don't know about the others. Will try to check my FSM trouble-shooting section tonight for a fluctuating idle with NO Codes/CEL causes.

Possibly a vaccum leak/cracked vacuum hose? Check the engine timing? PCV valves? How does the car run otherwise?

The small trunk mounted FSM in a slipcase is a exactly the same as the big FSM. Try to find one.

11 Crank Angle Sensor12 Mass Air Flow Sensor13 ECT Sensor14 Vehicle Speed Sensor16 TCS Signal21 Ignition Signal Circuit25 Idle Air Control Valve22 Fuel Pump Control31 ECM32 EGR Function33 Heated Oxygen Sensor34 Knock Sensor35 EGR Temperature Sensor (RH)41 Intake Air Temperature Sensor42 Fuel Temp Sensor43 Throttle Position Sensor45 Injector Leak46 Secondary Throttle Sensor51 Injector Analysis53 EGR Temperature Sensor (LH)54 Signal Circuit From A/T Control Unit To ECM65-71 Single Cylinder Or Multiple Cylinder Misfire72 Three Way catalyst Function76 Fuel Injection System Function77 Rear Heated Oxygen Sensor82 Crankshaft Position Sensor84 A/T Diagnosis Communication Line91 Front Heated Oxygen Sensor Heater103 Park/Neutral Position Switch105 EGR & Canister Control Solenoid

[GerryO]

From pages EF & EC-177 thru 182 of the FSM

Hunting1) check O2 sensors (by unplugging them)2) power balance test - disconnecting and reconnecting coil packs one at a time3) check spark plugs4) check for intake air leak5) check EGR valve

Unstable Idle1) check EGR valve2) power balance test3) injector test4) ignition spark test5) spark plugs inspection6) fuel pressure check7) heated O2 sensors8) air intake leak9) idle adjustment screw clogging10) compression11) ECM harness connector

Again, it would seem that some of these that would trigger a CEL or register a saved Code can be eliminated as a possibility.

[kbflip02]

'94-'97 J30 FSM...google PHATG20.com and there you shall find the coveted factory service manul....lol...i knew it was around here somewhere...just download it...lol

[yodawill2000]

OT

Gerry did you ever gt the consult from Drape ??Has a nice power balance test.

[GerryO]

OT

Gerry did you ever gt the consult from Drape ??Has a nice power balance test.

I did, and was thinking about connecting things today and contacting you to see if you've used it to trouble-shoot/improve engine performance in any way.

Thanks, Gerry

[yodawill2000]

All Ive done is play around with it and verify Timing and TPS voltage ,But it does Much more.

[mgarzaiii]

Any update to this? Sure would like to see where this info is now.

[goody90q45]

Are you looking for the FSM for the M45 or the J30? Here's the NICO link to all of them.....

http://www.nicoclub.com/FSM/