|
|
power issues 1999 s10 2.2l rwd automatic 156k
|
|
|
| |
|
|
2tailedfox
New User
Jul 16, 2009, 8:21 AM
Post #1 of 7
(15859 views)
|
|
power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
Hey there,
I've got a 1999 chevy s10 2.2l 4cyl auto rwd 2200 sfi engine with about 156k miles on it.
It's always had hard starting.
about a year ago i replaced the alternator because it gave out.
I've got 6 different mechanics telling me 5,000 different things that could be wrong with it, and am very very frusterated.
It has power loss. fuel mileage is down to about 15 mpg. I have to all but floor it on hills to keep up with the speed limit. but if i do completely floor it, it will cut out, and try to die (it doesn't die or shut off, just stops accelerating, which i think is the rev limiter kicking in maybe?). If I try really hard and manipulate the shifting by skillfully playing with the gas pedal, I can get it up to highway speeds, but it takes a lot more if it's uphill. when up at 65-70mph I am pretty much flooring it, and i'll go back and forth between 2 different gears depending on uphill or downhill. also after i replaced the alternator my headlights and dash lights will flicker randomly while going down the highway, but i don't think thats my issue.
anyway I've done the following as per a whole bunch of "20 year experienced mechanics advice"
-was a tps code, replaced the tps, refreshed pcm. now no check engine light, no codes.
-found small vacuum leak relating to the climate control system, plugged it, wow it blows where i tell it to now... still no power tho...
-replaced plugs and wires.
-had compression test done twice, they "say" it's good
-replaced fuel filter
-fuel pressure is still maybe 1psi below spec or so ... fpr seems to be stuck "on" or something as the pressure doesn't change from off to running...
-cut off the catylitic convertor and put in a flex pipe in it's place...
-put cleaner/optimizer stuff in the fuel (injector cleaner?)
-they have also "said" that they sprayed the carburator spray around and didn't find vacuum leaks...
-I paid another place $70 to diagnose it for good and they said "timing chain slipped and is 20degrees off, causing too much compression in the cylinders, and needs replacing" BUT i have another guy saying no way, timing chains don't give out, it's something else...
-thought really really hard about getting a bigger hammer, and or driving it off a cliff...
I'm over $200 and 2 months into just diagnosing this thing.
PLEASE HELP ME
(This post was edited by 2tailedfox on Jul 16, 2009, 8:21 AM)
|
|
| |
|
|
Regulator
Novice
Jul 16, 2009, 8:48 AM
Post #2 of 7
(15847 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
Well whoever told you the timing chain don't wear out is wrong. With the miles you have on that motor it is a good idea to check it. One cheap way is to pull the cap off the dist and mark the rotor then turn the crank pully back and forth till the rotor moves both ways if more then 1/2 inch you can bet the chain is streched, which would cause the timing to be off. I know you can have it set again so it fires when it's top dead center on number one but the cam {and valves] will be out enough to cause the loss of power
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Jul 16, 2009, 9:07 AM
Post #3 of 7
(15845 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
Well it appears you are getting a lot of incorrect advice.
Although I won't go as far as saying the chain never wears out, I have never seen one go bad on a 2.2 with that mileage. The other advice you got here isn't very accurate either since this engine doesn't even have a distributor. I would expect that if your timing chain had jumped that much, it would be setting a code for injector synchronization or cam sensor.
Take a compete compression test if you have doubts about the timing chain. You will certainly have some low compression if the chain is off that much. I find it hard to believe it would even run that far off.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
2tailedfox
New User
Jul 16, 2009, 9:13 AM
Post #4 of 7
(15839 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
You are right, there is no distributer...
Also the shop that said it was the timing chain said that it had too much compression/pressure in the cylinders, not too little...
and the other shop said that they "did a compression check" and that it was "fine" - probably meaning if nothing else that it hadn't lost compression.
Assuming it isn't the timing chain, what could it be?
wouldn't A timing chain cause rough idle shaking and all kinds of other problems?
the one guy said that a timing chain wouldn't cause a loss of power, and he thought it was the MAF which i don't have... but maybe the map sensor, though I can't seem to find it unless it's that lil thing right next to the air filter.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Jul 16, 2009, 9:19 AM
Post #5 of 7
(15836 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
Too much compression doesn't point to a timing chain. You really can't have too much compression.
You really can't just keep guessing at this. Someone has to hook up a scan tool and analyze the data from the sensors and look for something out of range that will point you in the right direction. Just asking people for opinions isn't going to get you any accurate information. It's going to take a tech that knows what he's doing to inspect and analyze things. I would certainly double check the firing order of the plug wires for starters.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
2tailedfox
New User
Jul 16, 2009, 9:28 AM
Post #6 of 7
(15829 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
you mean that cylinder1's wire is going to the 1 position on the ignition module?
I know that those are correct. 1 is 1 2 is 2 3 is 3 and 4 is 4.
I don't know where to take it other than pay a damn dealership like $200 to hook up a scan tool.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Jul 16, 2009, 9:39 AM
Post #7 of 7
(15822 views)
|
|
Re: power issues 1999 s10 2.2l rwd automatic 156k
|
Sign In
|
|
I'm not saying a dealer but you definitely need to upgrade the caliber of techs that you have been using. Stay away from the chain stores and see if you have an independent shop with a good reputation. Most shops charge about 1 hour labor for a diagnostic and if they know what they are doing, that should be sufficient. I can answer questions here but someone needs to just look for something out of place in the data to find this problem.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 
mdma pills for sale : WhatsApp +33758633852
Drive Shaft Repair
2006 Toyoto Camry XLE Driver Side Electric Window Trouble
Grounding Cable, 2017 Jeep Renegade Trailhawk
equipment
