Question about Nissan Cars & Trucks
Just rebuilt a 1996 nissian truck 2.4., At the time I had a helper and He pulled the engine for me. I asked Him several times to make sure He marked all vacum lines,or took pics. Well He is gone not showing up for work three days in a row. He still cant figure that one out either?? I was able to get about 70% of them on correctly by the hood emblem. Still like a few that it didnt show. Mainly around the map sensor and the ones around the passengers side of the throttle body.
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Posted on Jan 02, 2017
OK. Since you have had so much trouble lets check the dealer for an updated software calibration for the PCM (power train control module). Once we're sure there is no "fix" here lets talk about "lean" engine conditions. Lean means one of two things are wrong with the air fuel mixture (ideally 14.7 parts air to 1 part fuel). 1. Too much air -or- 2. Not enough fuel. If you access to a scan tool we need to look at fuel trims. With the engine warm look at this data on the scan tool. You have a "bank 1" and "bank 2" fuel trim data. Additionally, each bank has a long term and a short term value. With the Engine hot and at idle add the LT and ST trim value for bank1 and write it down...do the same for bank2. Repeat this step, for EACH bank with engine at 2500 RPM in park (hold at 2500 for at least 30 seconds so trims update). Now, you have the total trim values for each bank at idle and at 2500 RPM. What should the values be? Total trim +/- 5 is good, +/- 10 borderline any thing greater is code setting territory. If trim numbers are high at idle and in range at 2500 rpm you have a vacum leak behind the mass air flow sensor. Or a faulty MAF. Pay particular attention to the air inlet hose clamps behind (between MAF and engine) the MAF. Also use ford parts only.
Posted on Nov 14, 2009
GMC S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual
VACUUM DIAGRAMS (See Figures 1 through 85)
Below is a listing of vacuum diagrams for most of the engine and emissions package combinations covered by this manual. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the car's original equipment, refer to the diagrams below for the same or similar configuration.
Check the link autozone.com (free register), select the year ('91 sample), Brand, Model, Sub-Model, Engine Size and make the next root...
1991 GMC TRUCK S15 4WD 4.3L TBI 6CYL REPAIR GUIDE >> EMISSION CONTROLS >> VACUUM DIAGRAMS
I really hope helps with this (remember rated this help). Good luck.
Posted on Jan 07, 2010
Remove the two bolts, the timing chain tensioner and tensioner arm.
NOTE: LH shown; RH similar.
Remove the bolts and the timing chain guides.
CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.
Compress the tensioner plunger, using an edge of a vise.
If the copper links are not visible, mark two links on one end and one link on the other end, and use as timing marks.
If removed, install LH and RH crankshaft sprockets.
Position the tensioner arms and tensioners, and install the bolts.
Posted on Apr 07, 2010
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