DJSTEEN

according to my mechanic, he read it off the diagnostic machine, the coolant temp says negative 5 and that's why it's hard starting.

He had to floor the gas pedal all the way then when cranking it, it started.

anyone ever heard of this before?

manicmechanic007

More likely the truck has a problem with the instrument cluster and intermittent PATS malfunction
Negative 5 means what exactly?
The ECT puts out a voltage signal
5 degrees if he is using a table would not need flood clear to start
Try turning the key on, and waiting 5 seconds, then off again, then on and try to start it
Cluster problems with your year of truck are common
Get a second opinion

mbb

So you think nobody can start their truck below zero? Really? A lot of the northern states in the US would disagree with you

I think you should probably get a second opinion from a better mechanic.

saxko

Some what new to the community. I even have a 1988 c1500 that i did a five.3 with LS6 cam Swap on a few years returned (first build). I did a complete damage down of the engine and overall performance store wiped clean and checked everything for me. (Didn't want any underlying problems considering that i didn't recognize records on donor vehicle). Anyways, these days bought hptuners and that i desired to begin mastering how to track. I figured i must examine the check engine light first and found that i had 4 codes. P0102(mass air waft circuit low), P0118(engine coolant temp sensor 1 high), P0135(02 heater circuit Bank 1 sensor 1), P0155(02 heater circuit bank 2 sensor 1), ......The mass air drift sensor became installed an ungainly role and looked pretty beat up on account that day 1 so i decided to simply update it. When i was paying near interest to the scanner i found out coolant temperature changed into studying bad 38 degrees(most possibly second code P0118). Actually did a few studies on here to diagnose if the sensor turned into horrific or maybe the wiring. Open circuit remains terrible 38 degrees while closed circuit jumps to 280-ish so i figured wiring is right and pc is reading effectively. I have modified it out three times already. First time i figured with all my terrible success i were given a faulty one. Subsequent one i had examine someone said they did not have good fortune with one logo versus any other. So here we're 1/3 sensor in and nevertheless analyzing negative 38. The worst part is that my truck is going for walks hard now......It was strolling quite proper earlier than all this. Any assist, guidelines, guidance, or true vibes might be plenty favored.




192.168.100.1 192.168.1.1

DJSTEEN

well found out the problem, the Cylinder head temperature sender was NOT even there, and wasn't plugged in. that's why it was sending code 1289 (if I remember correctly) getting a HT sender installing and plugging in, should work better then. just running rich because of the reading of -5. Turns out my OBD code reader said the same thing.