1996 Isuzu Rodeo. 4 cylinder.California Emissions.It sat idling for about 8 hours.Engine light came on.Was able to start it again.Now it won't start.Bought a scan tool but it reads error when connected to ECM.Engine cranks but will not start.Was thinking due to excessive idling it might be an emission problem.

shutting off while in drive should not hurt anything-do you have dash lights when you turn the key on-will the engine turn over when you turn the key to start position-is it firing at all-let me know and I will try to help you-Denny

Normally a shop would use a scanner to watch the operation of the EGR valve and sensor.
Code 401 means the sensor is telling the computer the flow is not enough. So the problem could be the sensor rather than the EGR valve. And yes one of the ports could be blocked too.

1998 Isuzu Truck Rodeo 2WD 2.2L MFI DOHC 4cyl

The Head Bolt Torque

Torque sequence ----------------- front ' 7 3 1 5 9 ' of ' ' engine ' 8 4 2 6 10 ' ----------------- Step 1: torque bolts in sequence to 18 Ft/Lbs Step 2: turn bolts in sequence an additional 90-degrees Step 3: turn bolts in sequence an additional 90-degrees Step 4: turn bolts in sequence an additional 90-degrees recheck final torque in sequence

1998 Isuzu Truck Rodeo 2WD 3.2L MFI DOHC 6cyl

The Head Bolt Torque

Torque sequence -------------- front ' 6 1 3 7 ' of ' ' engine ' 5 2 4 8 ' -------------- Step 1: torque to 20 Ft/Lbs Step 2: torque to 47 Ft/Lbs recheck final torque in sequence

it happend to me too,when i checked my belt it was loose and the free pully came off.make sure ur belt is tight.

A misfire alarm typically means the coil pack mounted above the sparkplug indicated in the misfire had gone defective.

To test it, swap the coil pack with another cylinder, and see if the misfire goes from #2 to the cylinder you put it on.

If the misfire continues to be on #2, then consider changing the sparkplugs.

I hope this helps.

LET ME GET BACK TO YOU.

Under the intake manifold there is a ignition coil power switch that you might try . See http://www.myisuzuparts.com/showparts.php fig no. 0-60 image number 4 item 352

Check fuses under the hood also check computer module.

I have a 1996 holden rodeo 2.6 petrol, it misses badly on accelleration, I have replaced plugs, leads, distributor cap, and run injector cleaner through... it idles ok,,,,

Good Day
Vale clearance cold
intake .006 in (.15 mm)
exhaust .010 in (.25 mm)

Timing
1. With transmission in Neutral or park, start engine and warm to normal operating temp. turn eng,and all accessories off. connect Tachometer. Connect timing light to no 1 spark plug wire.

2. Disconnect and plug fuel vapor canister purge hose and EGR vacuum hose. Start and ensure idle is 900 RPM. adjust idle as required. Check ignition timing ( 12 @ 900)

3. If adjustment is required, loosen distributor hold down bolt and turn until timing is within specification. Tighten distributor hold down bolt and recheck timing. adjust idle speed as required.

hope this helps

Cheers