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LMC Truck



Username Post: Engine swap 1995 S10 2wd        (Topic#343314)
MuddiGGer25 
Forum Newbie
Posts: 90

Age: 26
Loc: Jamestown ND
Reg: 01-25-16
03-14-17 06:02 PM - Post#2681571    

Hey yall, just thought id ask on here in case there are any surprises waiting for me, customer has a 1994 or 1995 s10 2wd manual pickup, the engine was knocking hard he said, so he went and bought a used jasper engine (yes it has the jasper warranty ID tag on it still) supposedly only 40K on it but the spark plugs told a different story, anyway new plugs and wires. but he never asked what year the jasper was... it has the newer computer attached to it and the engine wiring harness from the donor truck, including sensors,and accesories/exhaust. i think that the jasper is from the 1996 or 1997 when they put in OBDII, because thats what it appears to be. but its NOT the vortec 2.2L that started in 1998 externally it appears almost identical with the exception of no AC compressor, and the belt, and 3 blade fan


The intake and precat exhaust are identical.


Can i install the donor engine and computer/harness and plug it up to the body harness? preliminary inspection shows that the connector seems identical except for 2 or 3 more wires used.

or would i need to keep the older harness and computer and wire it up to the donor engine? the sensors all seem to have the same connectors for the ones i looked at.

Any tips to get the engine out? i read on a few forums its hard to get to the top tranny bolts and maybe have to remove the engine mounts from the body to clear?

1988 V10 Suburban 5.7L TBI/TH350 39K on rebuild 4.10AR GM14FF/GM10SF 235/85R16 & 18.4-16.1
1988 V20 Suburban 6.2L-J/TH400 CA truck, 125K G80 14FF/ GM10 4.10AR GVWR 8,600
1977 Ford Granada ~450HP 302 2bbl/C4 27K original 2.47 215/70R14




Edited by MuddiGGer25 on 03-14-17 06:03 PM. Reason for edit: No reason given.

 
LMC Trucks
junkman104 
Frequent Contributor
Posts: 1045
junkman104
Age: 57
Loc: Murphy N.C.
Reg: 01-25-14
03-18-17 06:03 PM - Post#2682133    
    In response to MuddiGGer25

Everything yo want to know without me typing.... http://www.s10forum.com/forum/f105/2-2-growin g-pains-321784/



 
gchemist 
Senior Chevytalk Moderator
Posts: 23771
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
03-19-17 04:00 AM - Post#2682172    
    In response to junkman104

I use several long extensions and u joint to reach the top transmission bolts.

I'll have to read up on the 2.2L. I don't know nothing about them. I have never worked on one either.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
MuddiGGer25 
Forum Newbie
Posts: 90

Age: 26
Loc: Jamestown ND
Reg: 01-25-16
03-28-17 01:11 PM - Post#2683849    
    In response to gchemist

Ok new development, the truck is a 10/1995 date code so, i think thats technically a 1996, the donor "jasper" is a 1997 so the block as far as i know from reading that link should be the same. I already have it mounted up and wired up, trans is connected etc. fluids are all full.

The only sensor i had to swap was the Crankshaft Position Sensor, because the connectors were different, There was another sensor just slightly forward farther a 1 1/16 wrench fit on it but not enough room to move the wrench and i didnt have a deep enough 1 1/16 socket to swap the original into the donor block, but the connectors were identical just the 96 had 1 wire and the 97 had 3 wires.


Heres the situation: The engine cranks, but fires up for a moment then sputters out, When i use a spark tester i only see spark for a moment

12V is good at the coil packs, so is the ground.
I used a digital multimeter to check the AC signal from the crankshaft sensor, and I got a reading within specs according to the guide here:

http://easyautodiagnostic s.com/gm/2.2L/icm-and-cra...

both sensors look like this: https://dgzmd7u6z2by7.cloudfront.net/partimage/ECS...

but since i dont have yellow and purple, i had to use purple and a ground to test it with the meter.


The only wires the 96 has are the following:
A- PURPLE wire.
Crankshaft position sensor circuit.

F- RED with BLACK stripe wire.
Ground circuit for ECM

BUT the red with black strip is right next to the purple so that would indicate that its actually "1-4 Ignition Coil Control Signal (comes from the ECM). The service literature will call this the Ignition Control Signal A."


Connector with 2 Wires

A- BLACK (or BLACK with WHITE stripe) wire.
Engine Ground (for the module).
B- PINK wire.
12 Volts with Ignition ON.


I pulled the old coil packs and that is my next step to try but what else can cause random firing?

Fuel is being delivered and can be easily smelled out the exhaust. all injectors, and MAP, TPS, IAT, etc all just plugged right into the harness, same connectors and same wire colors on all other sensors.

1988 V10 Suburban 5.7L TBI/TH350 39K on rebuild 4.10AR GM14FF/GM10SF 235/85R16 & 18.4-16.1
1988 V20 Suburban 6.2L-J/TH400 CA truck, 125K G80 14FF/ GM10 4.10AR GVWR 8,600
1977 Ford Granada ~450HP 302 2bbl/C4 27K original 2.47 215/70R14




 
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