97 HB PU engine stumble - Nissan Forum
 
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post #1 of 3 Old Nov 21st, 2012, 03:20 PM Thread Starter
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97 HB PU engine stumble

After I repaired a vacuum line that caused on p0400 egr flow, I am experiencing a low speed stumble when getting on the gas and also backing off gass. Engine runs fine except for the stumble. Idle is fine. There are no DTC's. I've filled the tank with Techron, and use it often.
Any ideas? TPS?

Mark
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post #2 of 3 Old Dec 11th, 2012, 01:32 PM
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READ THE CODES .. AND JUST BUY THE CHEAPEST GAS YOU CAN .. IF YOU PUT HIGH DOLLAR FGAS IN AND IT HELPS THEN THE TIMING IS OFF ..
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post #3 of 3 Old Dec 19th, 2012, 01:45 AM
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Quote:
Originally Posted by cse8921 View Post
After I repaired a vacuum line that caused on p0400 egr flow, I am experiencing a low speed stumble when getting on the gas and also backing off gass. Engine runs fine except for the stumble. Idle is fine. There are no DTC's. I've filled the tank with Techron, and use it often.
Any ideas? TPS?
I had the same problem with my 97 HB 170000 about 7 months ago. I replaced the EGR valve, it drove better but still stumbled. Check your spark plugs and wires, replace them actually for good measure.

Later on about a month ago i was driving down the road and all of the sudden my truck shuts off and absolutely wouldn't start. Two tows and $500 in parts and labor later, my distributor went out, not the cap, the actual distributor. If you order from Napa it's around $250 just for that part alone.

Hope this helps i just hope you can avoid what i just went through
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