CTS
Senior Member
Joined: Mar 2000
Posts: 597
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From: Michigan
If you are talking about the fan switch then it is between the #6 and #8 spark plugs on the passengers side head.
If you are talking about the gauge sending unit then it is between the #1 and #3 spark plugs on the drivers side of the block.
If you are talking about the coolant temperature sensor then the CTS is located on the front of the manifold near a hose fitting. Anything else would probably not give you stumbling problems. It has two wires going to it: 1 yellow and one black. Yes, it could most definitely cause your stumbling problem. Are you getting a check engine light. I chased a persistent CTS problem for about a year. The car generally ran like ****, real rich. I ended up replacing the switch and the wiring all the way back to the ECM. If you have questions or need a trouble shooting procedure,email me at irocbsa@mindspring.com. Good luck.
bsa
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"If they do not run, Then they will die." - Stonewall Jackson
#3
'87 IROC, 355 TPI, Converted to SD, 700R4, B&M Megashifter, 3.42, Trick Flow Twisted Wedge Heads, Edelbrock Intake, Accel Runners, Comp Cam, Crane Gold rockers, Lucas 23# injectors, Edelbrock headers, Flowmaster 3'' exhaust, Mallory Ignition, Transgo Performance Shift Kit, Corvette Servo, 2,000 Stall Torque Converter
[This message has been edited by irocbsa (edited April 27, 2001).]
[This message has been edited by irocbsa (edited April 27, 2001).]
[This message has been edited by irocbsa (edited April 27, 2001).]
If you are talking about the gauge sending unit then it is between the #1 and #3 spark plugs on the drivers side of the block.
If you are talking about the coolant temperature sensor then the CTS is located on the front of the manifold near a hose fitting. Anything else would probably not give you stumbling problems. It has two wires going to it: 1 yellow and one black. Yes, it could most definitely cause your stumbling problem. Are you getting a check engine light. I chased a persistent CTS problem for about a year. The car generally ran like ****, real rich. I ended up replacing the switch and the wiring all the way back to the ECM. If you have questions or need a trouble shooting procedure,email me at irocbsa@mindspring.com. Good luck.
bsa
------------------
"If they do not run, Then they will die." - Stonewall Jackson
#3
'87 IROC, 355 TPI, Converted to SD, 700R4, B&M Megashifter, 3.42, Trick Flow Twisted Wedge Heads, Edelbrock Intake, Accel Runners, Comp Cam, Crane Gold rockers, Lucas 23# injectors, Edelbrock headers, Flowmaster 3'' exhaust, Mallory Ignition, Transgo Performance Shift Kit, Corvette Servo, 2,000 Stall Torque Converter
[This message has been edited by irocbsa (edited April 27, 2001).]
[This message has been edited by irocbsa (edited April 27, 2001).]
[This message has been edited by irocbsa (edited April 27, 2001).]
Thread Starter
Supreme Member
Joined: Jul 1999
Posts: 1,566
Likes: 0
From: Toronto, Ont
Nope, I'm not getting any SES lights but the CTS is what I'm looking at to replace. I guess it's the one located just above the waterpump housing near the manifold correct? Are they expensive? Wouldn't it throw a code if it was bad? The stumble is in the low RPM only.
THanks again.
THanks again.
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