Its an '88 Camry with 4 cyl. 3SFE engine. I have been trying to figure out what is causing an extreme loss of power when the car is driven just a short ways. Idling, sitting still, it will run just fine. After driving a short ways the engine loses power to where it will only go walking speed. The check engine light has never come on. Spark voltage remains good. I found that the fuel press. regulator fuel ports were all clogged up with black hard deposits, like narrowed down to a pencil- lead size. I cleaned out the ports and checked it for operation with a vacuum tester. But This did not fix the problem. So I checked the control vacuum to it. ZERO. At idle, or at high speed...zero. Then I checked the input hoses (two) and output hose on EGR valve...zero. so I put the vac gauge on the P-E-R ports at the throttle body....all three are zero. There is no vacuum either at idle or at high RPM. SO it is no wonder it is so screwed up. I believe these three ports are the source of vacuum for the entire control system, aren't they? How can all three be plugged? Do they all join inside the throttle body and are fed by one source (I guess it is something like a venturi)? I guess next step is to remove the throttle body (hope the Haynes explains this!) Maybe it needs to be sprayed out with Berrymans' B-12 chemtool to unclog them? It is a new gauge, so I sucked very gently on the end of the test hose, just to make sure it is working. Its a good gauge! thanks geronimo
- posted
17 years ago